参数资料
| 型号： | ATEVK525 |
| 厂商： | Atmel |
| 文件页数： | 7/30页 |
| 文件大小： | 0K |
| 描述： | ADD ON KIT FOR STK525 |
| 标准包装： | 1 |
| 附件类型： | 大容量存储器 |
| 适用于相关产品： | STK525 |
| 产品目录页面： | 615 (CN2011-ZH PDF) |
| 相关产品： | ATSTK525-ND - KIT STARTER FOR AT90USB |
| 其它名称： | AT89EVK525 AT89EVK525-ND |
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Using the ATEVK525
2.1.3
2.2
2.2.1
Protection circuitry
NAND Flash
Default device
The ATEVK525 includes an optional power supply protection circuit that prevents on-
board resources from being damaged.
Figure 2-3 . Power protection circuit location
This supplement, if mounted, protects the storage devices from voltage above 3.5V. In
case of overvoltage detection, the power positive line of the extension board is not
connected to devices, and the LED “PWR_FAIL” is lit.
If the supplement is not mounted or needs to be disabled, the solder pad SP1 must be
soldered to connect power supply of the on-board resources (see photo above).
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
– block size : 64 pages
– page size : 2112 bytes (2048 + 64 in spare zone)
Page program time of 300μs, Block erase time of 2ms
Copy-Back feature (enable cache transfers between blocks to speed up write
operation; no memory zone / address limitation)
The memory access is managed by the External Memory Interface hardware peripheral
of the AT90USBxxx microcontroller. Data and Address information share the same 8-bit
wide bus connected to the lowest bits of Memory Interface (A7-A0), while the Control
signals are connected to upper bits:
ATEVK525 Mass Storage Board for AVR
2-7
7740B–AVR–03/08
相关PDF资料 |
PDF描述 |
|---|---|
| ATEVK527 | KIT EVAL PWM AVR USB 4 SERIES |
| ATICE10 | AVR IN CIRCUIT EMULATOR |
| ATICE50POD | REPLACEMENT POD FOR ICE40,ICE50 |
| ATQT600IB | BOARD INTERFACE ATQT600IB |
| ATSTK1000 | KIT STARTER FOR AVR32AP7000 |
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