Chapter 3 4 Kbyte EEPROM Module (S12XEETX4KV2)
MC9S12XDP512 Data Sheet, Rev. 2.11
Freescale Semiconductor 155
All bits read 0 and are not writable.
EEPROM Address Registers (EADDR)
The EADDRHI and EADDRLO registers are the EEPROM address registers.
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.
3.3.2.9 EEPROM Data Registers (EDATA)
The EDATAHI and EDATALO registers are the EEPROM data registers.
All EDHI and EDLO bits read 0 and are not writable in normal modes.
All EDHI and EDLO bits are readable and writable in special modes.
Module Base + 0x0009
76543210
R EABLO
W
Reset 00000000
= Unimplemented or Reserved
Figure 3-11. EEPROM Address Low Register (EADDRLO)
Module Base + 0x000A
76543210
R EDHI
W
Reset 00000000
= Unimplemented or Reserved
Figure 3-12. EEPROM Data High Register (EDATAHI)
Module Base + 0x000B
76543210
R EDLO
W
Reset 00000000
= Unimplemented or Reserved
Figure 3-13. EEPROM Data Low Register (EDATALO)