MC9S12XD256CAG Datasheet, PDF (1083/1348 Pages) Freescale Semiconductor, Inc – MC9S12XDP512 Data Sheet

Chapter 26 4 Kbyte EEPROM Module (S12XEETX4KV2)
The EADDRHI and EADDRLO registers are the EEPROM address registers.
7
6
5
4
3
2
1
0
R
0
0
0
0
0
EABHI
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 26-13. EEPROM Address High Register (EADDRHI)
7
6
5
4
3
2
1
0
R
EABLO
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 26-14. EEPROM Address Low Register (EADDRLO)
All EABHI and EABLO bits read 0 and are not writable in normal modes.
All EABHI and EABLO bits are readable and writable in special modes.
The MCU address bit AB0 is not stored in the EADDR registers since the EEPROM block is not byte
addressable.
26.3.2.9 EEPROM Data Registers (EDATA)
The EDATAHI and EDATALO registers are the EEPROM data registers.
7
6
5
4
3
2
1
0
R
EDHI
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 26-15. EEPROM Data High Register (EDATAHI)
7
6
5
4
3
2
1
0
R
EDLO
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 26-16. EEPROM Data Low Register (EDATALO)
All EDHI and EDLO bits read 0 and are not writable in normal modes.
Freescale Semiconductor
MC9S12XDP512 Data Sheet, Rev. 2.21
1085