mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 609

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

22.3.2.3
Read: Anytime
Write: The EEON bit can be written to any time on all devices. Bits E[11:15] are “write anytime in all
modes” on most devices. On some devices, bits E[11:15] are “write once in normal and emulation modes
and write anytime in special modes”. See device overview chapter to determine the actual write access
rights.
This register initializes the position of the internal EEPROM within the on-chip system memory map.
Freescale Semiconductor
1. The reset state of this register is controlled at chip integration. Please refer to the device overview section to determine the
EE[15:11]
Reset
actual reset state of this register.
EEON
Field
7:3
0
W
R
1
EE15
Internal EEPROM Map Position — These bits determine the upper five bits of the base address for the system’s
internal EEPROM array.
Enable EEPROM — This bit is used to enable the EEPROM memory in the memory map.
0 Disables the EEPROM from the memory map.
1 Enables the EEPROM in the memory map at the address selected by EE[15:11].
Initialization of Internal EEPROM Position Register (INITEE)
—
7
Writes to this register take one cycle to go into effect.
Figure 22-5. Initialization of Internal EEPROM Position Register (INITEE)
= Unimplemented or Reserved
EE14
—
6
Table 22-4. INITEE Field Descriptions
EE13
MC9S12HZ256 Data Sheet, Rev. 2.05
—
5
EE12
NOTE
—
4
Description
EE11
—
3
Chapter 22 Module Mapping Control (MMCV4)
—
0
2
—
0
1
EEON
—
0
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