mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 1050

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 25 2 Kbyte EEPROM Module (S12XEETX2KV1)
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.
25.3.2.9
The EDATAHI and EDATALO registers are the EEPROM data registers.
All EDHI and EDLO bits read 0 and are not writable in normal modes.
1050
Reset
Reset
Reset
Reset
W
W
W
W
R
R
R
R
EEPROM Data Registers (EDATA)
0
0
0
0
0
7
7
7
7
= Unimplemented or Reserved
= Unimplemented or Reserved
= Unimplemented or Reserved
= Unimplemented or Reserved
Figure 25-14. EEPROM Address Low Register (EADDRLO)
Figure 25-13. EEPROM Address High Register (EADDRHI)
0
0
0
0
0
6
6
6
6
Figure 25-16. EEPROM Data Low Register (EDATALO)
Figure 25-15. EEPROM Data High Register (EDATAHI)
MC9S12XDP512 Data Sheet, Rev. 2.17
0
0
0
0
0
5
5
5
5
0
0
0
0
0
4
4
4
4
EABLO
EDLO
EDHI
0
0
0
0
0
3
3
3
3
0
0
0
0
0
2
2
2
2
Freescale Semiconductor
0
0
0
0
1
1
1
1
EABHI
0
0
0
0
0
0
0
0