ATmega169P
Within the same page, the low data byte must be loaded prior to the high data byte.
After data is loaded to the page buffer, program the EEPROM page, see Figure 26-12.
Figure 26-12. Serial Programming Instruction example
Serial Programming Instruction
Load Program Memory Page (High/Low Byte)/
Load EEPROM Memory Page (page access)
Write Program Memory Page/
Write EEPROM Memory Page
Byte 1
Byte 2
Byte 3
Byte 4
Byte 1
Byte 2
Byte 3
Byte 4
Adr MSB
Adr LSB
Adr MSB
Adr LSB
Bit 15 B
0
Bit 15 B
0
Page Buffer
Page Offset
Page 0
Page 1
Page 2
Page Number
Page N-1
Program Memory/
EEPROM Memory
26.8.4
SPI Serial Programming Characteristics
For characteristics of the SPI module see “SPI Timing Characteristics” on page 331.
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8018A–AVR–03/06
ATMEL [ ATMEL ]
