User EEPROM
A 512kB serial EEPROM (Atmel AT93C66) is available on the cpuModule for the user to save nonvolatile parameters on the cpuModule. The EEPROM can be accessed by reading and writting to I/O address 456h, as shown in the following table.
Table 55 User EEPROM I/O Address 456h
D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
CS | SK | DI | DO | Reserved |
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Table 56 EEPROM Register Description
Bit | Signal | Function | Read / Write |
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D7 | CS | Chip Select | Read / Write |
D6 | SK | Serial Data Clock | Read / Write |
D5 | DI | Serial Data Input | Read / Write |
D4 | DO | Serial Data Output | Read Only |
D3 |
| Reserved |
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D2 |
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D1 |
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D0 |
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Chapter 4: Using the cpuModule 73 |
