User's Manual
Table Of Contents
- Introduction
- General Characteristics
- Feature Details
- Feature Descriptions
- Applications
- Mechanical Design Overview
- Mechanical Dimensions
- Climatic and Mechanical Environment Testing Compliance
- Introduction
- 50-Pin Connector Interfaces
- Flashing LED
- SIM Interface
- RF Interface
- DTE/DCE Interface Rates
- Serial Test/Demo Board Components
- Serial Test/Demo Board Block Diagram
- General Guidelines for the Use of the ModemModule
- Reference Documents
- Related Manuals
- Additional Information
- Safety Precautions
- Regulatory Standards Compliance
- Where to Find SMD Connectors
- GSM Antenna
- SIM Card Holder
- LIST OF TABLES
Chapter 3 – Electrical Characteristics
Wireless ModemModule MTMMC-G-F1 and MTMMC-G-F2 Developer’s Guide 17
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49
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Figure 3-2: Pin Numbering – Bottom View
Power Supply
The main power supply is provided through a double connection. These connections are respectively pins 3 and
4 for the +5V and the pins 1 and 2 for the ground (GND). The pins 6, 21, and 24 are also ground connection in
order to produce a proper ground plane.
A 5V +/-5% - 1A power is strictly required to supply the modem. Otherwise, serious dysfunctions may appear.
However, the modem does not have to constantly deliver 1A current at 5V on this power supply.
This power supply is internally regulated to a nominal value VBATT.
Table 3-3: Power Supply Pin Description
Pin Number Name Description Comment
1 GND Ground High Current
2 GND Ground High Current
3 +5V Ground High Current
4 +5V Ground High Current
6 GND Ground High Current
21 GND Ground High Current
24 GND Ground High Current
Table 3-4: Power Consumption in EGSM-only mode @25 degrees C
Conditions I
NOM
I
MAX
+5V
During TX bursts @2W 810 mA 1 A
+5V
Average @ 2W 310 mA 370 mA
+5V
Average @ ).5W 185 mA 200 mA
+5V
Average idle mode 22 mA 25 mA