MC68HC812A4 Datasheet, PDF (116/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

EEPROM
7.4.3 EEPROM Test Register
Address: $00F2
Bit 7
6
5
4
3
2
1
Bit 0
Read: EEODD EEVEN MARG EECPD EECPRD
0
EECPM
0
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 7-4. EEPROM Test Register (EEPROT)
Read: Anytime
Write: In special modes only (SMODN = 0)
These bits are used for test purposes only. In normal modes, the bits are
forced to 0.
EEODD — Odd Row Programming Bit
1 = Bulk program/erase all odd rows
0 = Odd row bulk programming/erasing disabled
EEVEN — Even Row Programming Bit
1 = Bulk program/erase all even rows
0 = Even row bulk programming/erasing disabled
MARG — Program and Erase Voltage Margin Test Enable Bit
1 = Program and erase margin test
0 = Normal operation
This bit is used to evaluate the program/erase voltage margin.
EECPD — Charge Pump Disable Bit
1 = Disable charge pump
0 = Charge pump is turned on during program/erase
EECPRD — Charge Pump Ramp Disable Bit
1 = Disable charge pump controlled ramp up
0 = Charge pump is turned on progressively during program/erase
This bit is known to enhance write/erase endurance of EEPROM
cells.
ECPM — Charge Pump Monitor Enable Bit
1 = Output the charge pump voltage on the IRQ/V_PP pin
0 = Normal operation
MC68HC812A4 — Rev. 3.0
116
EEPROM
Advance Information
MOTOROLA