Freescale Semiconductor, Inc.
EEPROM Memory
EEPROM Control Registers
EESWAI — EEPROM Stops in Wait Mode
0 = The module is not affected during WAIT mode
1 = The module ceases to be clocked during WAIT mode
Read and write anytime.
NOTE: The EESWAI bit should be cleared if the WAIT mode vectors are
mapped in the EEPROM array.
PROTLCK — Block Protect Write Lock
0 = Block protect bits and bulk erase protection bit can be written
1 = Block protect bits are locked
Read anytime. Write once in normal modes (SMODN = 1), set and
clear any time in special modes (SMODN = 0).
EERC — EEPROM Charge Pump Clock
0 = System clock is used as clock source for the internal charge
pump. Internal RC oscillator is stopped.
1 = Internal RC oscillator drives the charge pump. The RC
oscillator is required when the system bus clock is lower than
f
.
PROG
Read and write anytime.
Bit 7
SHPROT
1
6
1
1
5
1
1
4
BPROT4
1
3
BPROT3
1
2
BPROT2
1
1
BPROT1
1
Bit 0
BPROT0
1
RESET:
EEPROT — EEPROM Block Protect
$00F1
Prevents accidental writes to EEPROM. Read anytime. Write anytime if
EEPGM = 0 and PROTLCK = 0.
SHPROT — SHADOW Byte Protection
0 = The SHADOW byte can be programmed and erased.
1 = The SHADOW byte is protected from being programmed and
erased.
68HC(9)12D60 — Rev 4.0
MOTOROLA
Advance Information
EEPROM Memory
119
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA [ MOTOROLA ]
