341
7679H–CAN–08/08
AT90CAN32/64/128
25.5.4 Parameters
Table 25-9. XA1 and XA0 Coding
XA1 XA0 Action when XTAL1 is Pulsed
0 0 Load Flash or EEPROM Address (High or low address byte determined by BS1).
0 1 Load Data (High or Low data byte for Flash determined by BS1).
1 0 Load Command
1 1 No Action, Idle
Table 25-10. Command Byte Bit Coding
Command Byte Command Executed
1000 0000 Chip Erase
0100 0000 Write Fuse bits
0010 0000 Write Lock bits
0001 0000 Write Flash
0001 0001 Write EEPROM
0000 1000 Read Signature bytes and Calibration byte
0000 0100 Read Fuse and Lock bits
0000 0010 Read Flash
0000 0011 Read EEPROM
Table 25-11. No. of Words in a Page and No. of Pages in the Flash
Device Flash Size Page Size PCWORD No. of Pages PCPAGE PCMSB
AT90CAN32
16K words 128 words PC[6:0] 128 PC[13:7] 13
AT90CAN64
32K words 128 words PC[6:0] 256 PC[14:7] 14
AT90CAN128
64K words 128 words PC[6:0] 512 PC[15:7] 15
Table 25-12. No. of Words in a Page and No. of Pages in the EEPROM
Device EEPROM Size Page Size PCWORD No. of Pages PCPAGE EEAMSB
AT90CAN32
1K bytes 8 bytes EEA[2:0] 128 EEA[9:3] 9
AT90CAN64
2K bytes 8 bytes EEA[2:0] 256 EEA[10:3] 10
AT90CAN128
4K bytes 8 bytes EEA[2:0] 512 EEA[11:3] 11
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