MC68HC05P18A Datasheet, PDF (86/130 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

EEPROM
Freescale Semiconductor, Inc.
10.3 EEPROM Programming Register
The contents and use of the programming register (EEPROG) are
discussed here.
Address: $001C
Bit 7
Read: 0
Write:
Reset: 0
6
5
0
CPEN
0
0
= Unimplemented
4
3
2
1
Bit 0
ER1
ER0 LATCH EERC EEPGM
0
0
0
0
0
Figure 10-1. EEPROM Programming Register (EEPROG)
CPEN — Charge Pump Enable Bit
When set, CPEN enables the charge pump that produces the internal
EEPROM programming voltage. This bit should be set concurrently
with the LATCH bit. The programming voltage will not be available
until EEPGM is set. The charge pump should be disabled when not in
use. CPEN is readable and writable and is cleared by reset.
ER1 and ER0 — Erase Select Bits
ER1 and ER0 form a 2-bit field that is used to select one of three
erase modes: byte, block, or bulk. Table 10-1 shows the modes
selected for each bit configuration. These bits are readable and
writable and are cleared by reset.
Table 10-1. Erase Mode Select
ER1
ER0
Mode
0
0
Program, no erase
0
1
Byte erase
1
0
Block erase
1
1
Bulk erase
Technical Data
EEPROM
For More Information On This Product,
Go to: www.freescale.com
MC68HC05P18A