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Summary of Contents for Atmel ATEVK525
- Page 1 ATEVK525 Mass Storage Board for AVR ....................Hardware User Guide...
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Page 2: Table Of Contents
Usage Notes ...................3-19 Handling another NAND Flash device ............3-19 Section 4 Troubleshooting Guide ............... 4-21 Section 5 Technical Specifications ..............5-23 Section 6 Technical Support ................6-24 Section 7 Complete Schematics ................. 7-25 ATEVK525 Mass Storage Board for AVR User Guide 7740B–AVR–03/08... -
Page 3: Introduction
Product Name> microcontroller. This board is designed to allow an easy evaluation of USB Mass Storage using demonstration software. The ATEVK525 board has been designed to be plugged into the Atmel STK525 Starter Kit Board in order to add Mass Storage capability to an existing development board, and to combine them with other features (USB, RS232, Microphone..., but also all AVR... -
Page 4: Atevk525 Avr Mass Storage Board Features
Introduction Figure 1-1 . ATEVK525 ATEVK525 AVR Mass Storage Board Features The ATEVK525 provides the following features: NAND Flash chip soldered (Micron MT29F2G08AACWP, 256 MBytes) Reserved location additional NAND Flash chips module plug-in Receptacle for SD and MMC memory cards... -
Page 5: Using The Atevk525
Getting started 2.1.1 Plugging the board The ATEVK525 is an extension board that must be plugged on another microcontroller hosting board, like STK525 (AT90USBxxx support), that provides supply voltage. Figure 2-1 . Connecting the ATEVK525 under the STK525 ATEVK525 can also be plugged onto the STK525, but in this configuration,... - Page 6 Using the ATEVK525 2.1.2 Power supply The ATEVK525 must be powered with a voltage between 2.8 and 3.5V. Before connecting or powering the boards, you must ensure the power supply configuration on the motherboard. The voltage must be set to 3.3V (microcontroller I/O levels), and this voltage must be present on the VTG pins of the EXPAND connectors.
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Page 7: Nand Flash
(see photo above). NAND Flash 2.2.1 Default device The ATEVK525 comes with one NAND Flash chip soldered. At the time of writing, this chip is the Micron MT29F2G08AACWP that features: 2 GBits (256 MBytes) organized as: – 2048 blocks –... - Page 8 NAND Flash Module Description If another memory device is required for development or evaluation purpose, it is still possible to install it on the ATEVK525 through an additional module as described below. The board provides two SIP-13 receptacle footprints (2.54mm pitch). Users can solder a receptacle on the board and then insert a NAND Flash module described below, or directly solder the module.
- Page 9 Refer to the CD-ROM documentation if you wish to create your own PCB board and mount devices on this board (BOM and components placement). Each module can receive up to four different devices, according to the following placement : Table 2-3 . NAND Flash devices placement ATEVK525 Mass Storage Board for AVR 7740B–AVR–03/08...
- Page 10 Using the ATEVK525 NF Module Installation Figure 2-5 . NAND Flash module on the ATEVK525, plus MMC card See Note 1 When using the NAND Flash module, the following pin assignments do not change : Data/Address bus, CLE, ALE, RE#, WE#, WP# (Write Protect feature drives all the chips at the same time).
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Page 11: Sd/Mmc Card
Using the ATEVK525 SD/MMC Card The ATEVK525 includes a receptacle compatible with SD and MMC memory cards. Figure 2-6 . SD card pinout (contact view) Note: 1. The MMC card defined by specification v3.31 and earlier have only the pins #1 to #7 2. -
Page 12: Leds
– SD_CS: SD/MMC chip select signal (active low) – NF_CLE: NAND Flash CLE signal – NF_ALE: NAND Flash ALE signal – NF_RE: NAND Flash RE# signal – NF_WE: NAND Flash WE# signal 2-12 ATEVK525 Mass Storage Board for AVR 7740B–AVR–03/08... -
Page 13: Configuration Pads
See section 2.2.2 Additional devices for more details. 2.6.2 Configuration Pads - Disconnection Figure 1. Configuration Pad - Disconnection Cut Connection 2.6.3 Configuration Pads - Connection Figure 2. Configuration Pad - Re-connection Drop of solder Wire ATEVK525 Mass Storage Board for AVR 2-13 7740B–AVR–03/08... -
Page 14: Solder Pads
Table 2-7 . Solder Pads Solder. Related Pads Function Signals Reference This solder pad allows power protection circuit bypassing. If this optional circuit is not mounted, this solder pad must be soldered. 2-14 ATEVK525 Mass Storage Board for AVR 7740B–AVR–03/08... -
Page 15: Software Implementation
– no flow control 4. Navigation in the file system (on-board memories or USB Mass Storage device connected to the USB Host interface) supports following commands: – a:, b: ... (goto selected drive) ATEVK525 Mass Storage Board for AVR 3-15 7740B–AVR–03/08... - Page 16 CD-ROM documentation to know the procedure to follow to register and access the source code. Note: At first board start-up, the on-board memory chip need to be formatted by the Host oper- ating system. 3-16 ATEVK525 Mass Storage Board for AVR 7740B–AVR–03/08...
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Page 17: Performances
– SD/MMC: internal write access speed and duration, SPI bus frequency – NAND Flash: memory internal writing structure (COPYBACK support or not, page write and block erase duration, page size), USB maximum data rate ATEVK525 Mass Storage Board for AVR 3-17 7740B–AVR–03/08... -
Page 18: Driver Limitations
Another feature that should be implemented next is the Recovery option. This option prevents user halts or disconnections during write operations from destroying the memory File System structure, by recovering the data lost in the last write 3-18 ATEVK525 Mass Storage Board for AVR 7740B–AVR–03/08... -
Page 19: Usage Notes
– if your device is not included in the supported devices list, you must add it, using the same description structure that other devices. “CONF_NF.H” : ATEVK525 Mass Storage Board for AVR 3-19 7740B–AVR–03/08... - Page 20 #define NF_TYPE_MT29F2G08AACWP – if you want to use different modules with different memory references, without modifying driver, must enable TRUE either NF_AUTO_DETECT_2KB or NF_AUTO_DETECT_512B, according to the page size of the memory. 3-20 ATEVK525 Mass Storage Board for AVR 7740B–AVR–03/08...
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Page 21: Troubleshooting Guide
NAND Flash device still mounted module chip are selected at the same (additional module) does time) not work Module not correctly Check if the module is correctly mounted. mounted Use preferentially a socket. ATEVK525 Mass Storage Board for AVR 4-21 7740B–AVR–03/08... - Page 22 Bad physical contact anybody... SD/MMC does not work Check that the connector is not too old. Memories are not immortal...Check the Memory failure memory card with another memory reader. 4-22 ATEVK525 Mass Storage Board for AVR 7740B–AVR–03/08...
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Page 23: Technical Specifications
– External Voltage Supply ..........3.3V (+/-10%) (100mA) Features – NAND Flash device............MT29F2G08AACWP – MMC/SD receptacle – Additional NAND Flash devices support – Embedded signalling LEDs – Optional power protection circuit ATEVK525 Mass Storage Board for AVR 5-23 7740B–AVR–03/08... -
Page 24: Technical Support
Section 6 Technical Support For Technical support, please contact avr@atmel.com. When requesting technical support, please include the following information: Which target AVR device is used (complete part number) Target voltage and speed Clock source and fuse setting of the AVR... -
Page 25: Complete Schematics
Section 7 Complete Schematics On the next pages, the following documents of ATEVK525 are shown: Complete schematics, Assembly drawing, Bill of materials. Default configuration summary ATEVK525 Mass Storage Board for AVR 7-25 7740B–AVR–03/08... - Page 26 Complete Schematics Figure 7-1 . Schematics, 1 of 1 MODULE MODULE 7-26 ATEVK525 Mass Storage Board for AVR 7740B–AVR–03/08...
- Page 27 Complete Schematics Figure 7-2 . Assembly Drawing, 1 of 1(component side view) ATEVK525 Mass Storage Board for AVR 7-27 7740B–AVR–03/08...
- Page 28 Si2301BDS P-Channel low Vgs & Rds(on) FET transistor SOT-23 Note: The rows with grey background color specify that the corresponding component is not mounted by default (power protection circuit, NAND Flash socket...) 7-28 ATEVK525 Mass Storage Board for AVR 7740B–AVR–03/08...
- Page 29 Optional components Power Cut power supply if > 3.5V, and lights on NOT MOUNTED Protection PWR_FAIL LED Circuit NANDFlash J2, J4 Allow plug/unplug of the optional NAND Flash NOT MOUNTED socket module ATEVK525 Mass Storage Board for AVR 7-29 7740B–AVR–03/08...
- Page 30 Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise,to anyintellectu- alproperty right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDI-TIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORYWAR-...
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