MC68HC08AZ16 Datasheet, PDF (50/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

EEPROM
Functional description
EEPROM control
register (EECR)
This read/write register controls programming/erasing of the array.
7
6
5
4
3
2
1
0
EECR
$FE1D
READ:
EEBCLK
WRITE:
0
EEOFF EERAS1 EERAS0 EELAT
0
EEPGM
RESET: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 1. EEPROM control register (EECR)
EEBCLK - EEPROM BUS CLOCK ENABLE
This read/write bit determines which clock will be used to drive the
internal charge pump for programming/erasing. Reset clears this bit.
1 = Bus clock drives charge pump
0 = Internal RC oscillator drives charge pump
NOTE:
It is recommended that the internal RC oscillator is used to drive the
internal charge pump for applications which have a bus frequency in the
3-5V range.
EEOFF - EEPROM power down
This read/write bit disables the EEPROM module for lower power
consumption. Any attempts to access the array will give unpredictable
results. Reset clears this bit.
1 = Disable EEPROM array
0 = Enable EEPROM array
NOTE: The EEPROM requires a recovery time t_EEOFF to stabilize after clearing
the EEOFF bit.
9-eeprom
MOTOROLA
EEPROM
MC68HC08AZ32
49