Difference between revisions of "Minnowboard:SPI Boot flash"

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(Programming Interface)
Line 5: Line 5:
 
the MinnowBoard has a 2x4 header that has 0.1" spacing for programming the SPI based serial flash memory.
 
the MinnowBoard has a 2x4 header that has 0.1" spacing for programming the SPI based serial flash memory.
  
table
+
{|border="3"
 
+
|+Programming Header
 +
!Pin number||Main Function||Note
 +
|-
 +
| 1
 +
| +3.3V Power
 +
| Supports on +3.3V
 +
|-
 +
| 2
 +
| GND
 +
| system ground
 +
|-
 +
| 3
 +
| nCS
 +
| Chip Select Active Low
 +
|-
 +
| 4
 +
| SCK
 +
| SPI Clock
 +
|-
 +
| 5
 +
| MISO
 +
| Data Output from serial flash
 +
|-
 +
| 6
 +
| MOSI
 +
| Data Input to serial flash
 +
| 7
 +
| nPRG_EN
 +
| Program Enable Active Low
 +
|}
  
 
= Applications and Hardware =
 
= Applications and Hardware =

Revision as of 14:19, 15 May 2013

the MinnowBoard uses a SPI based serial flash memory to load the initial code into the Intel Atom E640 series processor. The MinnowBoard uses a WinBond W25Q32 (datasheet) which has a total of 4096KB of storage which can be flashed with a UEFI image or other custom firmware.

Programming Interface

the MinnowBoard has a 2x4 header that has 0.1" spacing for programming the SPI based serial flash memory.

Programming Header
Pin number Main Function Note
1 +3.3V Power Supports on +3.3V
2 GND system ground
3 nCS Chip Select Active Low
4 SCK SPI Clock
5 MISO Data Output from serial flash
6 MOSI Data Input to serial flash 7 nPRG_EN Program Enable Active Low

Applications and Hardware

  • Flashrom is an open source utility that allows you to work with the SPI based serial flash memory on the MinnowBoard.
  • Flashrom supports a wide range of flash devices (Supported Hardware) including the WinBond W25Q32.
  • Flashrom can automatically detect the presence of the WinBond W25Q32 and provide full read/erase/write functionality.
  • Flashrom can use the many open as well as proprietary hardware tools such as