EC21 Mini PCIe Hardware Design LTE Standard Module Series Rev. EC21_Mini_PCIe_Hardware_Design_V1.3 Date: 2019-08-19 Status: Released www.quectel.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarters: Quectel Wireless Solutions Co., Ltd. Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District, Shanghai, China 200233 Tel: +86 21 5108 6236 Email: info@quectel.com Or our local office. For more information, please visit: http://www.quectel.com/support/sales.
LTE Standard Module Series EC21 Mini PCIe Hardware Design About the Document History Revision Date Author Description 1.0 2016-06-07 Yeoman CHEN/ Frank WANG Initial Lyndon LIU/ Rex WANG 1. Deleted description of EC21-AUTL and EC21-CT Mini PCIe in Table 1. 2. Updated key features of EC21 Mini PCIe in Table 2. 3. Added current consumption of EC21 Mini PCIe in Chapter 4.7. 4. Updated mechanical dimensions of EC21 Mini PCIe in Figure 15. 5. Updated conducted RF output power in Table 16. 6.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 8. Added thermal consideration in Chapter 6.7. 9. Updated UMTS and GSM features and added storage temperature range in Table 2. 10. Added operating frequencies in Table 15 11. Added GNSS frequency in Table 16. 12. Updated antenna requirements in Table 17. 13. Updated EC21 Mini PCIe conducted RF output power in Table 20. 14. Updated conducted RF receiving sensitivity of EC21-E Mini PCIe in Table 21. 15.
LTE Standard Module Series EC21 Mini PCIe Hardware Design version.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Contents About the Document ................................................................................................................................ 2 Contents .................................................................................................................................................... 5 Table Index ..........................................................................................................................
LTE Standard Module Series EC21 Mini PCIe Hardware Design 6.4. 6.5. 6.6. 6.7. RF Characteristics ................................................................................................................ 44 ESD Characteristics .............................................................................................................. 50 Current Consumption ............................................................................................................ 50 Thermal Consideration .........
LTE Standard Module Series EC21 Mini PCIe Hardware Design Table Index TABLE 1: DESCRIPTION OF EC21 MINI PCIE ................................................................................................ 15 TABLE 2: KEY FEATURES OF EC21 MINI PCIE ............................................................................................. 16 TABLE 3: I/O PARAMETERS DEFINITION .......................................................................................................
LTE Standard Module Series EC21 Mini PCIe Hardware Design Figure Index FIGURE 1: FUNCTIONAL DIAGRAM ............................................................................................................... 19 FIGURE 2: PIN ASSIGNMENT ......................................................................................................................... 20 FIGURE 3: REFERENCE CIRCUIT OF POWER SUPPLY ..............................................................................
LTE Standard Module Series EC21 Mini PCIe Hardware Design 1 Introduction This document defines EC21 Mini PCIe module, and describes its air interfaces and hardware interfaces which are connected with customers’ applications. This document can help customers to quickly understand module interface specifications, electrical and mechanical details as well as other related information of EC21 Mini PCIe module.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 1.1. Safety Information The following safety precautions must be observed during all phases of operation, such as usage, service or repair of any cellular terminal or mobile incorporating EC21 Mini PCIe module. Manufacturers of the cellular terminal should send the following safety information to users and operating personnel, and incorporate these guidelines into all manuals supplied with the product.
LTE Standard Module Series EC21 Mini PCIe Hardware Design FCC Certification Requirements. According to the definition of mobile and fixed device is described in Part 2.1091(b), this device is a mobile device. And the following conditions must be met: 1. This Modular Approval is limited to OEM installation for mobile and fixed applications only.
LTE Standard Module Series EC21 Mini PCIe Hardware Design If the device is used for other equipment that separate approval is required for all other operating configurations, including portable configurations with respect to 2.1093 and different antenna configurations. For this device, OEM integrators must be provided with labeling instructions of finished products. Please refer to KDB784748 D01 v07, section 8.
LTE Standard Module Series EC21 Mini PCIe Hardware Design (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 2 Product Concept 2.1. General Description EC21 Mini PCIe module provides data connectivity on LTE-FDD, LTE-TDD, DC-HSDPA, HSPA+, HSDPA, HSUPA, WCDMA, EDGE and GPRS networks with PCI Express Mini Card 1.2 standard interface. It supports embedded operating systems such as WinCE, Linux, Android etc., and also provides audio, high-speed data transmission and GNSS functionalities for customers’ applications.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 2.2. Description of Product Series EC21 Mini PCIe series contains 10 variants, and are listed in the following table.
LTE Standard Module Series EC21 Mini PCIe Hardware Design EC21-EU Mini PCIe Support GSM: 900/1800MHz Support WCDMA: B1/B8 Support LTE-FDD: B1/B3/B7/B8/B20/B28A Support LTE/WCDMA receive diversity Support GNSS1) Support digital audio2) EC21-EC Mini PCIe Support LTE-FDD: B1/B3/B7/B8/B20/B28A Support WCDMA: B1/B8 Support GSM: 900/1800MHz Support LTE/WCDMA receive diversity Support digital audio2) EC21-AUX Mini PCIe3) Support GSM: 850/900/1800/1900MHz Support WCDMA: B1/B2/B4/B5/B8 Support LTE-FDD: B1/B2/B
LTE Standard Module Series EC21 Mini PCIe Hardware Design Class 1 (30dBm±2dB) for PCS1900 Class E2 (27dBm±3dB) for GSM850 8-PSK Class E2 (27dBm±3dB) for EGSM900 8-PSK Class E2 (26dBm±3dB) for DCS1800 8-PSK Class E2 (26dBm±3dB) for PCS1900 8-PSK Class 3 (24dBm+1/-3dB) for WCDMA bands Class 3 (23dBm±2dB) for LTE-FDD bands Class 3 (23dBm±2dB) for LTE-TDD bands LTE Features Support up to non-CA Cat 1 FDD and TDD Support 1.
LTE Standard Module Series EC21 Mini PCIe Hardware Design WCDMA: AMR/AMR-WB LTE: AMR/AMR-WB Support echo cancellation and noise suppression PCM Interface Support 16-bit linear data format Support long frame synchronization and short frame synchronization Support master and slave modes, but must be the master in long frame synchronization USB Interface Compliant with USB 2.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 2.4. Functional Diagram The following figure shows the block diagram of EC21 Mini PCIe.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 3 Application Interfaces The physical connections and signal levels of EC21 Mini PCIe comply with PCI Express Mini CEM specifications. This chapter mainly describes the definition and application of the following interfaces of EC21 Mini PCIe: Power supply (U)SIM interface USB interface UART interface PCM and I2C interfaces Control and indicator signals Antenna interfaces 3.1.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 3.2. Pin Description The following tables show the pin definition and description of EC21 Mini PCIe on the 52-pin application. Table 3: I/O Parameters Definition Type Description DI Digital Input DO Digital Output IO Bidirectional OC Open Collector PI Power Input PO Power Output Table 4: Pin Description Pin No.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 7 CLKREQ# RESERVED 8 UIM_PWR USIM_VDD 9 GND GND 10 UIM_DATA USIM_DATA IO Data signal of (U)SIM card 11 REFCLK- UART_RX DI UART receive data 12 UIM_CLK USIM_CLK DO Clock signal of (U)SIM card 13 REFCLK+ UART_TX DO UART transmit data 14 UIM_RESET USIM_RST DO Reset signal of (U)SIM card 15 GND GND Mini card ground 16 UIM_VPP RESERVED Reserved 17 RESERVED RI 18 GND GND Mini card ground 19 RESERVED RESER
LTE Standard Module Series EC21 Mini PCIe Hardware Design 29 GND GND Mini card ground 30 SMB_CLK I2C_SCL DO I2C serial clock 31 PETn0 DTR DI Sleep mode control 32 SMB_DATA I2C_SDA 33 PETp0 RESERVED Reserved 34 GND GND Mini card ground 35 GND GND Mini card ground 36 USB_D- USB_DM 37 GND GND IO IO I2C serial data USB differential data (-) Require external pull-up to 1.8V. Require differential impedance of 90Ω.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 48 1.5V NC Not connected 49 RESERVED PCM_DIN1) 50 GND GND 51 RESERVED PCM_SYNC1) IO PCM frame synchronization 52 3.3Vaux VCC_3V3 PI 3.3V DC supply DI PCM data input Mini card ground NOTES 1. Keep all NC, reserved and unused pins unconnected. 2. 1) The digital audio (PCM) function is only supported on Telematics version. 3.3. Power Supply The following table shows pin definition of VCC_3V3 pins and ground pins.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Figure 3: Reference Circuit of Power Supply 3.4. (U)SIM Interface The (U)SIM interface circuitry meets ETSI and IMT-2000 requirements. Both 1.8V and 3.0V (U)SIM cards are supported. The following table shows the pin definition of (U)SIM interface. Table 6: Pin Definition of (U)SIM Interface Pin Name Pin No. I/O Power Domain Description USIM_VDD 8 PO 1.8V/3.0V Power source for (U)SIM card USIM_DATA 10 IO 1.8V/3.
LTE Standard Module Series EC21 Mini PCIe Hardware Design USIM_VDD Module 100nF 15K (U)SIM Card Connector GND USIM_VDD USIM_RST VCC RST 0R 0R USIM_CLK CLK GND VPP IO USIM_PRESENCE 0R USIM_DATA 33pF GND 33pF 33pF GND GND Figure 4: Reference Circuit of (U)SIM Interface with an 8-pin (U)SIM Card Connector If (U)SIM card detection function is not needed, please keep USIM_PRESENCE unconnected.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Keep placement of (U)SIM card connector to the module as close as possible. Keep the trace length as less than 200mm as possible. Keep (U)SIM card signals away from RF and power supply traces. To avoid cross-talk between USIM_DATA and USIM_CLK, keep them away from each other and shield them with surrounded ground. In order to offer good ESD protection, it is recommended to add a TVS diode with parasitic capacitance not exceeding 15pF.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Test Points Minimize these stubs Module R3 NM_0R R4 NM_0R L1 USB_DM USB_DM USB_DP USB_DP GND MCU ESD Array Close to Module GND Figure 6: Reference Circuit of USB Interface A common mode choke L1 is recommended to be added in series between the module and customer’s MCU in order to suppress EMI spurious transmission.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 2. The ESD device used for USB interface protection has been built in the Mini PCIe, thus the external ESD device can be reserved for the further use. 3.6. UART Interface The following table shows the pin definition of the UART interface. Table 8: Pin Definition of UART Interface Pin Name Pin No. I/O Power Domain Description UART_RX 11 DI 3.3V UART receive data UART_TX 13 DO 3.3V UART transmit data UART_CTS 23 DI 3.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Table 9: Pin Definition of PCM and I2C Interfaces Pin Name Pin No. I/O Power Domain Description PCM_CLK 1) 45 IO 1.8V PCM clock signal PCM_DOUT 1) 47 DO 1.8V PCM data output PCM_DIN 1) 49 DI 1.8V PCM data input PCM_SYNC 1) 51 IO 1.8V PCM frame synchronization I2C_SCL 30 DO 1.8V I2C serial clock. Require external pull-up to 1.8V. I2C_SDA 32 IO 1.8V I2C serial data. Require external pull-up to 1.8V.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Figure 7: Timing in Primary Mode In auxiliary mode, the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising edge. The PCM_SYNC rising edge represents the MSB. In this mode, the PCM interface operates with a 256KHz, 512KHz, 1024KHz or 2048KHz PCM_CLK and an 8KHz, 50% duty cycle PCM_SYNC. The following figure shows the timing relationship in auxiliary mode with 8KHz PCM_SYNC and 256KHz PCM_CLK.
LTE Standard Module Series EC21 Mini PCIe Hardware Design The following figure shows a reference design of PCM interface with an external codec IC. PCM_CLK MIC_BIAS BCLK PCM_SYNC FS PCM_DOUT DACIN PCM_DIN MIC+ MIC- ADCOUT SPKOUT+ I2C_SCL SCLK I2C_SDA SDIN SPKOUT- Codec Module 1.8V Figure 9: Reference Circuit of PCM Application with Audio Codec 3.8. Control and Indicator Signals The following table shows the pin definition of control and indicator signals.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 3.8.1. RI Signal The RI signal can be used to wake up the host. When a URC returns, there will be the following behaviors on the RI pin after executing AT+QCFG="risignaltype","physical" command. 120ms High Low URC returns Figure 10: RI Behavior 3.8.2. DTR Signal The DTR signal supports sleep control function. Driving it to low level will wake up the module. 3.8.3.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Table 12: Airplane Mode Controlled by Software Method AT+CFUN=? RF Function Status Module Operation Mode Conditions 0 RF and (U)SIM disabled Minimum functionality mode Keep W_DISABLE# at high level. 3.8.4. PERST# Signal The PERST# signal can be used to force a hardware reset on the card. Customers can reset the module by driving the PERST# to a low level voltage within the time frame of 150ms~460ms and then releasing it.
LTE Standard Module Series EC21 Mini PCIe Hardware Design AT+QCFG="ledmode",0 (Default setting) AT+QCFG="ledmode",2 The following tables show the detailed network status indications of the LED_WWAN# signal.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 4 GNSS Receiver EC21 Mini PCIe includes a fully integrated global navigation satellite system solution that supports Gen8C-Lite of Qualcomm (GPS, GLONASS, BeiDou, Galileo and QZSS). EC21 Mini PCIe supports standard NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data update rate via USB interface by default. By default, EC21 Mini PCIe GNSS engine is switched off. It has to be switched on via AT command.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 5 Antenna Connection EC21 Mini PCIe is mounted with three antenna connectors for external antenna connection: a main antenna connector, an Rx-diversity antenna connector, and a GNSS antenna connector. And Rx-diversity function is enabled by default. The impedance of the antenna connectors is 50Ω. 5.1. Operating Frequency The following table shows the operating frequencies of EC21 Mini PCIe.
LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD B5 824~849 869~894 MHz LTE-FDD B7 2500~2570 2620~2690 MHz LTE-FDD B8 880~915 925~960 MHz LTE-FDD B12 699~716 729~746 MHz LTE-FDD B13 777~787 746~756 MHz LTE-FDD B18 815~830 860~875 MHz LTE-FDD B19 830~845 875~890 MHz LTE-FDD B20 832~862 791~821 MHz LTE-FDD B26 814~849 859~894 MHz LTE-FDD B28 703~748 758~803 MHz LTE-TDD B40 2300~2400 2300~2400 MHz 5.2.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 5.3. GNSS Performance The following table shows the GNSS performance of EC21 Mini PCIe. Table 17: GNSS Performance Parameter Sensitivity (GNSS) Description Conditions Typ. Unit Cold start Autonomous -146 dBm Reacquisition Autonomous -157 dBm Tracking Autonomous -157 dBm Autonomous 35 s XTRA enabled 18 s Autonomous 26 s XTRA enabled 2.2 s Autonomous 2.5 s XTRA enabled 1.8 s Autonomous @open sky <2.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 5.4. Antenna Requirements 5.4.1. Antenna Requirements The following table shows the requirements on main antenna, Rx-diversity antenna and GNSS antenna. Table 18: Antenna Requirements Type Requirements GNSS1) Frequency range: 1559MHz~1609MHz Polarization: RHCP or linear VSWR: < 2 (Typ.) Passive antenna gain: > 0dBi Active antenna noise figure: <1.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 5.4.2. Antenna Connectors and Mating Plugs The dimensions of the antenna connectors are shown as below. Figure 14: Dimensions of Antenna Connectors (Unit: mm) It is recommended to use U.FL-LP mating plugs listed in the following figure to match the antenna connectors. Figure 15: Mechanicals of U.
LTE Standard Module Series EC21 Mini PCIe Hardware Design The following figure describes the space factor of mating plugs. Figure 16: Space Factor of Mating Plugs (Unit: mm) For more details of the recommended mating plugs, please visit http://www.hirose.com.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 6 Electrical, Reliability and Radio Characteristics 6.1. General Description This chapter mainly describes the following electrical and radio characteristics of EC21 Mini PCIe: Power supply requirements I/O requirements RF characteristics GNSS receiver ESD characteristics Current consumption Thermal consideration 6.2. Power Supply Requirements The input voltage of EC21 Mini PCIe is 3.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 6.3. I/O Requirements The following table shows the I/O requirements of EC21 Mini PCIe. Table 20: I/O Requirements Parameter Description Min. Max. Unit VIH Input High Voltage 0.7 × VCC_3V3 VCC_3V3+0.3 V VIL Input Low Voltage -0.3 0.3 × VCC_3V3 V VOH Output High Voltage VCC_3V3-0.5 VCC_3V3 V VOL Output Low Voltage 0 0.4 V NOTES 1. 2. The PCM and I2C interfaces belong to 1.
LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD bands 23dBm±2dB < -39dBm LTE-TDD bands 23dBm±2dB < -39dBm Table 22: Conducted RF Receiving Sensitivity of EC21-E Mini PCIe Frequency Primary Diversity SIMO1) 3GPP (SIMO) EGSM900 -109.0dBm / / -102.0dBm DCS1800 -109.0dBm / / -102.0dbm WCDMA B1 -110.5dBm / / -106.7dBm WCDMA B5 -110.5dBm / / -104.7dBm WCDMA B8 -110.5dBm / / -103.7dBm LTE-FDD B1 (10MHz) -98.0dBm -98.0dBm -101.5dBm -96.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Table 24: Conducted RF Receiving Sensitivity of EC21-V Mini PCIe Frequency Primary Diversity SIMO1) 3GPP (SIMO) LTE-FDD B4 (10MHz) -97.5dBm -99.0dBm -101.0dBm -96.3dBm LTE-FDD B13 (10MHz) -97.7dBm -97.0dBm -100.0dBm -93.3dBm Table 25: Conducted RF Receiving Sensitivity of EC21-AUT Mini PCIe Frequency Primary Diversity SIMO1) 3GPP (SIMO) WCDMA B1 -110.0dBm / / -106.7dBm WCDMA B5 -110.5dBm / / -104.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Table 27: Conducted RF Receiving Sensitivity of EC21-J Mini PCIe Frequency Primary Diversity SIMO1) 3GPP (SIMO) LTE-FDD B1 (10MHz) -97.5dBm -98.7dBm -100.2dBm -96.3dBm LTE-FDD B3 (10MHz) -96.5dBm -97.1dBm -100.5dBm -93.3dBm LTE-FDD B8 (10MHz) -98.4dBm -99.0dBm -101.2dBm -93.3dBm LTE-FDD B18 (10MHz) -99.5dBm -99.0dBm -101.7dBm -96.3dBm LTE-FDD B19 (10MHz) -99.2dBm -99.0dBm -101.4dBm -96.3dBm LTE-FDD B26 (10MHz) -99.
LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD B8 (10MHz) -99.2dBm -98.2dBm -102.2dBm -93.3dBm LTE-FDD B28 (10MHz) -98.6dBm -98.7dBm -102.0dBm -94.8dBm LTE-TDD B40 (10MHz) -97.2dBm -98.4dBm -101.2dBm -96.3dBm Table 29: Conducted RF Receiving Sensitivity of EC21-EU Mini PCIe Frequency Primary Diversity SIMO1) 3GPP (SIMO) EGSM900 -108.5dBm / / -102.0dBm DCS1800 -108.5dBm / / -102.0dbm WCDMA B1 -110dBm / / -106.7dBm WCDMA B8 -110dBm / / -103.
LTE Standard Module Series EC21 Mini PCIe Hardware Design LTE-FDD B7 (10MHz) -97.0dBm -95.5dBm -99.5dBm -94.3dBm LTE-FDD B8 (10MHz) -97.0dBm -97.0dBm -101.0dBm -93.3dBm LTE-FDD B20 (10MHz) -97.5dBm -99.0dBm -101.0dBm -93.3dBm LTE-FDD B28 (10MHz) -98.6dBm -98.7dBm -101.5dBm -94.8dBm Table 31: Conducted RF Receiving Sensitivity of EC21-AUX Mini PCIe Frequency Primary Diversity SIMO1) 3GPP (SIMO) GSM850 -109.0dBm / / -102.0dBm EGSM900 -109.0dBm / / -102.0dBm DCS1800 -109.
LTE Standard Module Series EC21 Mini PCIe Hardware Design NOTE 1) SIMO is a smart antenna technology that uses a single antenna at the transmitter side and two antennas at the receiver side, which can improve RX performance. 6.5. ESD Characteristics The following table shows the ESD characteristics of EC21 Mini PCIe.
LTE Standard Module Series EC21 Mini PCIe Hardware Design WCDMA PF=64 (USB disconnected) 32.0 mA WCDMA PF=64 (USB connected) 45.0 mA LTE-FDD PF=64 (USB disconnected) 32.0 mA LTE-FDD PF=64 (USB connected) 45.0 mA WCDMA B2 HSDPA @21.59dBm 582.0 mA WCDMA B2 HSUPA @22.17dBm 675.0 mA WCDMA B4 HSDPA @21.47dBm 575.0 mA WCDMA B4 HSUPA @21.73dBm 637.0 mA WCDMA B5 HSDPA @20.02dBm 686.0 mA WCDMA B5 HSUPA @20.18dBm 577.0 mA LTE-FDD B2 @22.93dBm 926.0 mA LTE-FDD B4 @22.72dBm 934.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Table 35: Current Consumption of EC21-KL Mini PCIe Parameter Description Sleep state Conditions Typ. Unit AT+CFUN=0 (USB disconnected) 3.5 mA LTE-FDD PF=64 (USB disconnected) 5.6 mA LTE-FDD PF=128 (USB disconnected) 4.7 mA LTE-FDD PF=64 (USB disconnected) 35.0 mA LTE-FDD PF=64 (USB connected) 49.0 mA LTE-FDD B1 @22.78dBm 972.0 mA LTE-FDD B3 @23.03dBm 974.0 mA LTE-FDD B5 @23.03dBm 764.0 mA LTE-FDD B7 @22.89dBm 959.
LTE Standard Module Series EC21 Mini PCIe Hardware Design GPRS data transfer (GNSS OFF) EDGE data transfer (GNSS OFF) WCDMA PF=64 (USB disconnected) 23.1 mA WCDMA PF=64 (USB connected) 43.4 mA LTE-FDD PF=64 (USB disconnected) 30.7 mA LTE-FDD PF=64 (USB connected) 43.5 mA LTE-TDD PF=64 (USB disconnected) 31.2 mA LTE-TDD PF=64 (USB connected) 43.8 mA GSM850 4DL/1UL @32.50dBm 335.0 mA GSM850 3DL/2UL @31.69dBm 537.0 mA GSM850 2DL/3UL @29.48dBm 605.0 mA GSM850 1DL/4UL @28.
LTE Standard Module Series EC21 Mini PCIe Hardware Design WCDMA data transfer (GNSS OFF) LTE data transfer (GNSS OFF) GSM850 1DL/4UL PCL=8 @22.60dBm 623.0 mA EGSM900 4DL/1UL PCL=8 @27.42dBm 227.0 mA EGSM900 3DL/2UL PCL=8 @26.23dBm 371.0 mA EGSM900 2DL/3UL PCL=8 @24.10dBm 492.0 mA EGSM900 1DL/4UL PCL=8 @22.80dBm 626.0 mA DCS1800 4DL/1UL PCL=2 @26.50dBm 171.0 mA DCS1800 3DL/2UL PCL=2 @25.50dBm 280.0 mA DCS1800 2DL/3UL PCL=2 @23.60dBm 387.0 mA DCS1800 1DL/4UL PCL=2 @22.37dBm 504.
LTE Standard Module Series EC21 Mini PCIe Hardware Design GSM voice call WCDMA voice call LTE-FDD B5@23.06dBm 697.0 mA LTE-FDD B7 @23.17dBm 886.0 mA LTE-FDD B8 @22.89dBm 852.0 mA LTE-FDD B28 @22.55dBm 939.0. mA LTE-TDD B40 @23.27dBm 421.0 mA GSM850 PCL=5 @32.40dBm 322.0 mA EGSM900 PCL=5 @33.58dBm 379.0 mA DCS1800 PCL=0 @29.45dBm 182.0 mA PCS1900 PCL=0 @29.56dBm 195.0 mA WCDMA B1 @22.15dBm 714.0 mA WCDMA B2 @22.77dBm 780.0 mA WCDMA B5 @23.16dBm 658.0 mA WCDMA B8 @22.
LTE Standard Module Series EC21 Mini PCIe Hardware Design GPRS data transfer (GNSS OFF) EDGE data transfer (GNSS OFF) WCDMA data transfer (GNSS OFF) LTE data WCDMA PF=64 (USB disconnected) 25.3 mA WCDMA PF=64 (USB connected) 38.0 mA LTE-FDD PF=64 (USB disconnected) 26.0 mA LTE-FDD PF=64 (USB connected) 37.0 mA EGSM900 4DL/1UL @33.39dBm 389.3 mA EGSM900 3DL/2UL @32.47dBm 593.6 mA EGSM900 2DL/3UL @29.49dBm 611.6 mA EGSM900 1DL/4UL @28.05dBm 682.1 mA DCS1800 4DL/1UL @31.44dBm 260.
LTE Standard Module Series EC21 Mini PCIe Hardware Design transfer (GNSS OFF) GSM voice call WCDMA voice call LTE-FDD B3 @22.42dBm 938.3 mA LTE-FDD B7 @22.21dBm 1036.0 mA LTE-FDD B8 @23.37dBm 897.5 mA LTE-FDD B20 @22.72dBm 913.0 mA LTE-FDD B28A @21.72dBm 898.8 mA EGSM900 PCL=5 @33.53dBm 385.0 mA DCS1800 PCL=0 @31.20dBm 256.0 mA WCDMA B1 @23.45dBm 794.6 mA WCDMA B8 @23.51dBm 792.0 mA Conditions Typ. Unit AT+CFUN=0 (USB disconnected) 2.8 mA GSM DRX=2 (USB disconnected) 4.
LTE Standard Module Series EC21 Mini PCIe Hardware Design GPRS data transfer (GNSS OFF) EDGE data transfer (GNSS OFF) LTE-FDD PF=64 (USB disconnected) 25.4 mA LTE-FDD PF=64 (USB connected) 38.8 mA LTE-TDD PF=64 (USB disconnected) 25.8 mA LTE-TDD PF=64 (USB connected) 39.0 mA GSM850 4DL/1UL @32.62dBm 312.8 mA GSM850 3DL/2UL @32.52dBm 530.6 mA GSM850 2DL/3UL @30.53dBm 602.5 mA GSM850 1DL/4UL @29.27dBm 686.0 mA EGSM900 4DL/1UL @32.76dBm 344.5 mA EGSM900 3DL/2UL @32.80dBm 590.
LTE Standard Module Series EC21 Mini PCIe Hardware Design WCDMA data transfer (GNSS OFF) LTE data transfer (GNSS OFF) EGSM900 3DL/2UL PCL=8 @26.91dBm 343.9 mA EGSM900 2DL/3UL PCL=8 @26.78dBm 449.6 mA EGSM900 1DL/4UL PCL=8 @26.67dBm 570.8 mA DCS1800 4DL/1UL PCL=2 @26.33dBm 199.2 mA DCS1800 3DL/2UL PCL=2 @26.65dBm 306.3 mA DCS1800 2DL/3UL PCL=2 @26.33dBm 419.8 mA DCS1800 1DL/4UL PCL=2 @26.35dBm 540.1 mA PCS1900 4DL/1UL PCL=2 @26.01dBm 186.5 mA PCS1900 3DL/2UL PCL=2 @26.45dBm 315.
LTE Standard Module Series EC21 Mini PCIe Hardware Design GSM voice call WCDMA voice call LTE-FDD B8 @23.04dBm 807.4 mA LTE-FDD B28A @23.54dBm 932.0 mA LTE-TDD B40 @23.79dBm 585.2 mA GSM850 PCL=5 @32.80dBm 316.2 mA EGSM900 PCL=5 @33.16dBm 348.7 mA DCS1800 PCL=0 @29.81dBm 216.8 mA PCS1900 PCL=0 @29.79dBm 214.9 mA WCDMA B1 @23.27dBm 823.4 mA WCDMA B2 @22.89dBm 898.7 mA WCDMA B5 @22.87dBm 776.9 mA WCDMA B8 @22.89dBm 685.
LTE Standard Module Series EC21 Mini PCIe Hardware Design Do not apply solder mask on the PCB area where the module is mounted, so as to ensure better heat dissipation performance. The reference ground of the area where the module is mounted should be complete, and add ground vias as many as possible for better heat dissipation. Add a heatsink on the top of the module and the heatsink should be designed with as many fins as possible to increase heat dissipation area.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 7 Dimensions and Packaging 7.1. General Description This chapter mainly describes mechanical dimensions as well as packaging specification of EC21 Mini PCIe module. All dimensions are measured in mm, and the dimensional tolerances are ±0.05mm unless otherwise specified. 7.2. Mechanical Dimensions of EC21 Mini PCIe 30.00±0.15 24.20±0.20 8.25±0.10 5.45±0.10 6.38±0.10 3x3.00±0.10 5.98±0.10 2xΦ2.60±0.1 6.35±0.10 0.61±0.05 2.35±0.10 50.95±0.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 7.3. Standard Dimensions of Mini PCI Express The following figure shows the standard dimensions of Mini PCI Express. Please refer to document [1] for detailed A and B.
LTE Standard Module Series EC21 Mini PCIe Hardware Design EC21 Mini PCIe adopts a standard Mini PCI Express connector which compiles with the directives and standards listed in the document [1]. The following figure takes the Molex 679100002 as an example. Figure 20: Dimensions of the Mini PCI Express Connector (Molex 679100002) 7.4. Packaging Specifications The EC21 Mini PCIe is packaged in a tray. Each tray contains 10pcs of modules. The smallest package of EC21 Mini PCIe contains 100pcs.
LTE Standard Module Series EC21 Mini PCIe Hardware Design 8 Appendix A References Table 40: Related Documents SN Document Name Remark [1] PCI Express Mini Card Electromechanical Specification Revision 1.2 Mini PCI Express specification [2] Quectel_EC2x&EG9x&EM05_AT_Commands_ Manual AT commands manual for EC25, EC21, EC20 R2.0, EC20 R2.1, EG91, EG95 and EM05 modules [3] Quectel_EC2x&EGxx&EM05_GNSS_AT_ Commands_Manual GNSS AT Commands Manual for EC25, EC21, EC20 R2.0, EC20 R2.
LTE Standard Module Series EC21 Mini PCIe Hardware Design DTE Data Terminal Equipment DTR Data Terminal Ready EFR Enhanced Full Rate EMI Electro Magnetic Interference ESD Electrostatic Discharge ESR Equivalent Series Resistance FDD Frequency Division Duplexing FR Full Rate GLONASS GLObalnaya Navigatsionnaya Sputnikovaya Sistema, the Russian Global Navigation Satellite System GMSK Gaussian Minimum Shift Keying GNSS Global Navigation Satellite System GPS Global Positioning System GSM
LTE Standard Module Series EC21 Mini PCIe Hardware Design MT Mobile Terminated NMEA National Marine Electronics Association PCM Pulse Code Modulation PDA Personal Digital Assistant PDU Protocol Data Unit POS Point of Sale PPP Point-to-Point Protocol RF Radio Frequency RTS Ready To Send Rx Receive SIMO Single Input Multiple Output SMS Short Message Service TX Transmitting Direction TVS Transient Voltage Suppressor UART Universal Asynchronous Receiver & Transmitter UL Up Link
