SPI Serial EEPROM/Data FLASH Memory
Technical Summary, Rev. 3
Freescale Semiconductor
2-5
2.3 SPI Serial EEPROM/Data FLASH Memory
A 1M-bit +3.3V SPI serial EEPROM/Data FLASH Memory, Atmel AT45DB011B-SC, is
provided on the 56858EVM, reference
Figure 2-3
. This memory connects directly to the SPI
Port through a header on the 56858. It can be used to load program code and data into the 56858’s
internal or external memory spaces. Jumper block JG10 is provided to allow the user to
disconnect the on-board SPI EEPROM/Data FLASH from the SPI port and allow him to connect
his own SPI port peripheral. The header details are shown in
Table 2-1
.
56858
MOSI/SRFS
MISO/SRCK
SCLK/STCK
SS/STFS/PC3
Serial EEPROM /
Data FLASH
SDI
SDO
SCK
CS
Data FLASH Enable
(SPI Port Connector)
JG10
Figure 2-3. SPI EEPROM Memory Block Diagram
.
Table 2-1. SPI Port Connector Description
JG10
Pin #
Signal
Pin #
Signal
1
SS/PF3
2
CS
3
MISO/PF0
4
SDO
5
MOSI/PF1
6
SDI
7
SCK/PF2
8
SCK
Summary of Contents for 56858
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