mc68hc05bs8 Freescale Semiconductor, Inc, mc68hc05bs8 Datasheet - Page 29

• Manufacturer Part Number: mc68hc05bs8
• Description: Mc68hc05 Family Of Low-cost Single-chip Microcontrollers.
• Manufacturer: Freescale Semiconductor, Inc

EEPGM - EEPROM Programming Power Enable
4.5.2
EEPRT - EEPROM Protect
When this bit is erased to “1”, writing to block 2 is not possible until the next external or power-on
reset occurs.
LVR - Low Voltage Reset
This bit does not control any EEPROM operation, but enables/disables the LVR function. When
enabled, and the MCU will reset if V
will have no effect until next external power-on reset.
4.5.3
To read data from EEPROM, the EELAT bit must be cleared. EEPGM, EER1, and EER0 bits will
be forced to zero. EEPROM is read as if it were normal ROM. The V
off since EEPGM is zero. If a read is performed while ELAT is set, data will be read as $FF.
MC68HC05BS8
1 (set)
0 (clear) –
1 (set)
0 (clear) –
1 (set)
0 (clear) –
EEOPR
EEPROM Options Register
Read Procedure
–
–
–
Programming power switched on to EEPROM array. If EELAT 1 then
EEPGM cannot be set.
Programming power switched off to EEPROM array.
Block 2 ($300-$3FF) configured for read/write.
Block 2 ($300-$3FF) configured for read only.
Low voltage reset function is disabled.
Low voltage reset function is enabled.
Address bit 7
$0200
MEMORY AND REGISTERS
DD
drops below V
bit 6
bit 5
LVR
. When this bit is changed, its new value
bit 4
bit 3
PP
bit 2
charge pump generator is
EEPRT
bit 1
bit 0
LVR
unaffected
on reset
State
TPG
4