AT85DVK-07 Development Board ..............................................................................................
Section 1 Introduction ........................................................................................... 1-1 1.1 Overview ...................................................................................................1-1 1.1.1 1.2 1.3 Typical Applications............................................................................1-1 AT85DVK-07 Starter Kit Content ..............................................................1-1 AT85DVK-07 Starter Kit Information ...........................
Table of Contents 2.14 Power Consumption Measurement.........................................................2-19 2.15 USB Storage Device Connection ............................................................2-20 2.16 Nand Flash Board Extension ..................................................................2-21 Section 3 Technical Specifications ..................................................................... 3-23 Section 4 Development Board Errata List............................................
Section 1 Introduction Congratulations on your purchase of the C51 AT85DVK-07 Starter Kit. It is designed to give designers a quick start to develop code on the AT85C51SND3Bx and for prototyping and testing of new designs. 1.1 Overview This document describes the development board part of the AT85DVK-07 Starter Kit dedicated to the AT85C51SND3Bx microcontroller. This board is designed to allow an easy evaluation of the product using Atmel’s demonstration software.
Introduction Figure 1-1. AT85DVK-07 Board Photo 1.3 AT85DVK-07 Starter Kit Information The AT85DVK-07 Starter Kit allows demonstrating of 2 typical applications which differentiate by the power supply voltage: The Very Low Voltage System The player operates at 1.8V and allows very low power consumption. The Low Voltage System The player operates at 3V and allows low power consumption.
Introduction 1.3.1 Very Low Voltage 1.8V System Figure 1-2. Typical Very Low Voltage 1.8V Application AT85C51SND3Bx 1.8V NF Memories Battery SD/MMC LVDD LCD FM Module PA 1.3.2 Low Voltage 3V System Figure 1-3.
Section 2 Using the AT85DVK-07 Board The AT85DVK-07 Board can be used as a stand-alone USB mass storage disk and master or slave multi-format audio player. 2.1 Development Board Figure 2-1.
Using the AT85DVK-07 Board Serial Remote FM Extension J7 J3 Int. DAC Line-In J5 On-Chip Debug J8 Ext. DAC J43 Mic J42 J23 J2 J26 J1 Figure 2-2.
Using the AT85DVK-07 Board 2.2 Power Management Unit The Power Management unit allows three different power supply sources along with a set of solder strap allowing configuration of “Very Low Voltage 1.8V application” or “Low Voltage 3V application”. Figure 2-3 shows the power management unit implementation. Jumpers J36, J37, J38, J39 must always be in place for proper operation and are implemented for current measurement purpose only (see Section 2.14). J36 J39 J38 J37 LED Figure 2-3.
Using the AT85DVK-07 Board 2.2.4 Power Configuration The power configuration is done through a set of solder straps. By default, the AT85DVK-07 Board is delivered configured in “Low Voltage 3V application” meaning all external components (LCD, NF, MMC…) are powered at 3V. Note: “Very Low Voltage 1.8V application” uses the on-chip 1.8V DC-DC of the AT85C51SND3Bx while “Low Voltage 3V application” uses the external on-board DCDC. Table 2-5.
Using the AT85DVK-07 Board SE37(2) SE33 SE35 Figure 2-6. Low Voltage Application Power Configuration L5 Bottom View Top View SE56 SE38 SE57(1) SE58 J20 SE32 SE34 AAA Battery Socket Notes: 2.2.5 External DC-DC Replacement 1. Option to allow power key-press detection by the AT85C51SND3Bx. 2. Option to allow battery voltage monitoring by the AT85C51SND3Bx.
Using the AT85DVK-07 Board Figure 2-7. Microcontroller Unit Implementation ISP RST 2.3.1 Socket F o r d e ve l op m en t p ur p os e , a Z IF s o ck e t m ay b e s o ld e r ed i n pl a ce of th e AT85C51SND3Bx chip. 2.3.2 Reset By pressing the RST push-button, a warm RESET of the AT85C51SND3Bx is performed. 2.3.3 In System Programming Pressing the ISP push-button while releasing the RST bush button enters the in system programming boot loader.
Using the AT85DVK-07 Board Figure 2-9. Parallel Remote Control Unit Implementation J11 25 1 26 2 Table 2-9. Remote Control Connector (J11) Pin Number Pin Name Pin Description 1 VDD IOVDD power supply 1.8V or 3V depending on the power configuration 2 BLVDD 3 P3.0/RXD/MISO 4 P1.7 5 P3.
Using the AT85DVK-07 Board Pin Number 2.5 USB Unit Pin Name Pin Description 24 P0.4/SD4/LD4 PSI Slave Data Bit 4 LCD Data Bit 4 25 P0.7/SD7/LD7 PSI Slave Data Bit 7 LCD Data Bit 7 26 P0.6/SD6/LD6 PSI Slave Data Bit 6 LCD Data Bit 6 The USB unit provides all the required hardware to develop USB V2.0 full-speed and high-speed devices and full-speed reduced-host / OTG compliant applications.
Using the AT85DVK-07 Board Figure 2-11. Nand Flash Unit Implementation J13 NF Footprint J14 2.6.1 Nand Flash Extension Table 2-11.
Using the AT85DVK-07 Board Pin Number Pin Name 11 NFD1 Data Bit 1 Pin Description 12 NFD0 Data Bit 0 13 VSS 0V digital supply reference Figure 2-12. Nand Flash Daughter Board Plug-In Index J13 Nand Flash J14 2.6.2 On-Board Nand Flash Configuration In case nand flash memory is soldered on board (user’s responsibility) a hardware configuration must be applied (see Figure 2-13) to avoid any conflict with a nand flash daughter board that may be plugged-in.
Using the AT85DVK-07 Board Figure 2-14. MMC/SD Unit Implementation MMC/SD P2 P2 2.7.1 MMC I/O Extension J31 J28 J32 Two extension connectors J31 and J32 (see Table 2-13 and Table 2-14) are implemented to get an access to the P2 alternate I/Os in case MMC is not used, or to plug an other socket (e.g. Mini-SD) through a daughter board. Table 2-13. MMC/SD I/O Extension Connector (J31) Pin Number Pin Name Pin Description 1 P2.0/SDINS SD/MMC Card Insertion Signal 2 P2.
Using the AT85DVK-07 Board Figure 2-15. Audio Input Unit Implementation J3 MIC 2.9 Audio Output Unit The Audio Output unit consists in 2 stereo 3.5 mm jacks J7 & J8 allowing output selection between on-chip audio codec (with its optional on-board headphone amplifier) and on-board audio DAC. Moreover 2 extension connectors J5 and J9 (see Table 2-15 and Table 2-16) allow user to plug daughter boards replacing on-board headphone amplifier or on-board audio DAC.
Using the AT85DVK-07 Board Pin Number Pin Name 7 AMP_OC Common reference amplifier output Pin Description 8 AMP_OL Amplifier right channel output 9 AVSS 10 NC 0V analog supply reference Table 2-16. Audio DAC Extension Connector (J9) 2.9.
Using the AT85DVK-07 Board 2.10 FM Receiver Unit The FM unit consists in 2 extension connectors J1 & J2 (see Table 2-17 and Table 2-18) allowing user to plug a daughter board featuring a FM receiver. Note: Using P4.3:0 I/O port to control the FM receiver chip implies that the on-board DAC can not be used in this configuration. Table 2-17. FM Receiver Extension Connector (J1) Pin Number Pin Name Pin Description 1 VDD IOVDD power supply 1.
Using the AT85DVK-07 Board 2.12.1 Keypad Extension Table 2-19. Keypad Extension Connector (J10) Pin Number Pin Name 1 VDD Pin Description IOVDD power supply 1.8V or 3V depending on the power configuration 2 P1.4 3 P1.3/KIN3 General purpose I/O used for matrix row or matrix column 3 input(1) General purpose I/O used for matrix row 4 P1.2/KIN2 General purpose I/O used for matrix row or matrix column 2 input(1) 5 P1.5 General purpose I/O used for matrix row Table 2-20.
Using the AT85DVK-07 Board Power Consumption Measurement In order to ease the power supply measurement, 4 jumpers are implemented as detailed in Figure 2-19: Figure 2-19. Power Management Unit Implementation J36 J39 J38 J37 LED 2.14 J20 J37 – This jumper allows insertion of a ammeter on VBUS power supply. – Mass storage power consumption can be monitored using this jumper. J36 – This jumper allows insertion of a ammeter on AT85C51SND3Bx HVDD power supply.
Using the AT85DVK-07 Board Figure 2-20. USB Mass Storage Device Connection J25 Mini-A Plug J24 A Receptacle Mass-Storage Device UVCON VBUS VSS Figure 2-21. USB Device Power Supply Connection EXTERNAL +5V VBUS POWER SUPPLY J24 UVCON VBUS VSS 2.16 Nand Flash Board Extension ON 5V GND The Nand Flash bare PCB is delivered to make easy new Nand Flash testing. The AT85C51SND3Bx Nand Flash drivers support up to 4 nand flash with 1x, 2x or 4x configuration.
Using the AT85DVK-07 Board Table 2-23. Single CE Nand Flash Memory Configuration Populated Footprint Number of NF NF0 x1 X x2 X X x4 X X Note: NF1 NF2 Solder Strap Configuration NF3 SE0 (1) SE1 (1) SE2(1) SE3(1) SE4 SE5 SE6 SE7 X X X X X X X X X 1. Optional configuration depending on Nand Flash Manufacturer. These solder straps connect pin 6 (TSOP package) of selected NF to VSS (check Nand Flash datasheet). Table 2-24.
Section 3 Technical Specifications System Unit – Physical Dimensions L= 120 x W= 120 x H= 25 mm – Weight 100 g Operating Conditions – Voltage Supply 1.
Section 4 Development Board Errata List 4.1 Board V1.0.0 • On-Board 3V DC-DC - Bad Startup DC-DC is not properly maintained after power-up. Workaround: Do not use external DC-DC: power the board using USB cable. • Microphone Input - DC Decoupling The decoupling capacitor is missing between microphone and MICIN input. Workaround: Add 1uF capacitor between microphone and MICIN input (layout cut).
Section 5 Technical Support There are two ways to report a technical issue: Through E-mail at mcu@atmel.com Through web site at http://support.atmel.no/bin/customer When requesting technical support, please report the following information: 5.1 Problem Reporting Object: – Company Name – Product Name – Short Description Example: COMPANY – AT85C51SND3B2 – Audio File Stop Playing Note: For follow-up reason, report problems separately i.e. one problem per report.
Technical Support – MMC/SD Ref: e.g. Sandisk 256MB – File System: e.g. FAT32 Note: In order to be able to reproduce and investigate the problem in our laboratory, be ready to send memory samples if any. Board – Version: e.g. V1.0.1 – Oscillator Frequency: e.g. 12 MHz – Voltage configuration: e.g. On board DC-DC – Operating Voltage: e.g.
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