mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 97

• Manufacturer Part Number: mc9s12hz256v2
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

The EEPROM module has hardware interlocks which protect data from accidental corruption. A protected
sector is located at the higher address end of the EEPROM array, just below address 0x07FF. The protected
sector in the EEPROM array can be sized from 64 bytes to 512 bytes. In addition, the EPOPEN bit in the
EPROT register, described in
globally protect the entire EEPROM array.
Chip security is defined at the MCU level.
Freescale Semiconductor
EEPROM BASE + 0x07FF
MODULE BASE + 0x000B
EEPROM BASE + 0x0000
MODULE BASE + 0x0000
0x07F0 – 0x07FC
0x07FE – 0x07FF
Address Offset
1536 BYTES
0x07FD
0x06C0
0x07C0
0x0600
0x0640
0x0680
0x0700
0x0740
0x0780
Section 3.3.2.5, “EEPROM Protection Register
Table 3-1. EEPROM Protection/Reserved Field
Figure 3-2. EEPROM Memory Map
MC9S12HZ256 Data Sheet, Rev. 2.05
(12 BYTES)
(Bytes)
0x07F0 – 0x07FF, EEPROM Protection/Reserved Field
Size
13
1
2
EEPROM Registers
EEPROM ARRAY
EEPROM Protected High Sectors
64, 128, 192, 256, 320, 384, 448, 512 bytes
EEPROM protection byte
Description
Reserved
Reserved
Chapter 3 2 Kbyte EEPROM Module (EETS2KV1)
(EPROT)”, can be set to
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