mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 546

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 19 Module Mapping Control (MMCV4)
19.3.2.3
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
(MC9S12E256DGV1)”
This register initializes the position of the internal EEPROM within the on-chip system memory map.
546
1. The reset state of this register is controlled at chip integration. Please refer to
EE[15:11]
Reset
(MC9S12E256DGV1)”
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 19-5. Initialization of Internal EEPROM Position Register (INITEE)
= Unimplemented or Reserved
to determine the actual reset state of this register.
EE14
to determine the actual write access rights.
—
6
Table 19-4. INITEE Field Descriptions
EE13
MC9S12E256 Data Sheet, Rev. 1.08
—
5
Chapter 1, “MC9S12E256 Device Overview
EE12
NOTE
—
4
Description
EE11
—
3
Chapter 1, “MC9S12E256 Device Overview
—
0
2
Freescale Semiconductor
—
0
1
EEON
—
0