MC9S12Q FREESCALE [Freescale Semiconductor, Inc], MC9S12Q Datasheet - Page 115
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MC9S12Q
Manufacturer Part Number
MC9S12Q
Description
Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S12Q.pdf
(644 pages)
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3.3.2.3
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
Module Base + 0x0012
Starting address location affected by INITRG register setting.
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 3-5. Initialization of Internal EEPROM Position Register (INITEE)
= Unimplemented or Reserved
EE14
—
6
Table 3-4. INITEE Field Descriptions
EE13
—
5
MC9S12Q128
EE12
Rev 1.09
NOTE
—
4
Description
Chapter 3 Module Mapping Control (MMCV4) Block Description
EE11
—
3
—
0
2
—
0
1
EEON
—
0
115
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