s908ab32ag0cfue Freescale Semiconductor, Inc, s908ab32ag0cfue Datasheet - Page 80

• Manufacturer Part Number: s908ab32ag0cfue
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

EEPROM
5.11.2 EEPROM Array Configuration Register
Technical Data
80
NOTE:
Address:
EEPGM — EEPROM Program/Erase Enable
Writing 0s to both the EELAT and EEPGM bits with a single instruction
will only clear EEPGM. This is to allow time for the removal of high
voltage.
The EEPROM array configuration register configures EEPROM security
and EEPROM block protection.
This read-only register is loaded with the contents of the EEPROM non-
volatile register (EENVR) after a reset.
CON[3:1] — Unused
EEPRTCT — EEPROM Protection Bit
Reset:
Read:
Write:
This read/write bit enables the internal charge pump and applies the
programming/erasing voltage to the EEPROM array if the EELAT bit
is set and a write to a valid EEPROM location has occurred. Reset
clears the EEPGM bit.
The EEPRTCT bit is used to enable the security feature in the
EEPROM (see
Figure 5-3. EEPROM Array Configuration Register (EEACR)
1 = EEPROM programming/erasing power switched on
0 = EEPROM programming/erasing power switched off
1 = EEPROM security disabled
0 = EEPROM security enabled
$FE1F
CON3
Bit 7
CON2
6
5.7 EEPROM Security
EEPROM
CON1
5
Contents of EENVR ($FE1C)
EEPRTCT
4
EEBP3
Options).
3
MC68HC908AB32
EEBP2
Freescale Semiconductor
2
EEBP1
1
—
Rev. 1.1
EEBP0
Bit 0