MC68HC08AZ32A Datasheet, PDF (69/456 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
EEPROM
EEPROM Register Descriptions
NOTE:
Writing logic 0s to both the EELAT and EEPGM bits with a single
instruction will clear EEPGM only to allow time for the removal of high
voltage.
5.6.2 EEPROM Array Configuration Register
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.
Address: $FE1F
Bit 7
6
5
4
3
2
1
Bit 0
Read: UNUSED UNUSED UNUSED EEPRTCT EEBP3 EEBP2 EEBP1 EEBP0
Write:
Reset:
Contents of EENVR ($FE1C)
Figure 5-3. EEPROM Array Configuration Register (EEACR)
Bit 7:5 — Unused Bits
These read/write bits are software programmable but have no
functionality.
EEPRTCT — EEPROM Protection Bit
The EEPRTCT bit is used to enable the security feature in the
EEPROM (see EEPROM Program/Erase Protection on page 61).
1 = EEPROM security disabled
0 = EEPROM security enabled
This feature is a write-once feature. Once the protection is enabled it
may not be disabled.
MC68HC08AZ32A — Rev 1.0
MOTOROLA
EEPROM
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Go to: www.freescale.com
Technical Data
69