MC68HC912BL16 Datasheet, PDF (52/128 Pages) Freescale Semiconductor, Inc – 16-Bit Microcontroller

Freescale Semiconductor, Inc.
EECPRD — Charge Pump Ramp Disable
Known to enhance write/erase endurance of EEPROM cells.
0 = Charge pump is turned on progressively during program/erase.
1 = Disable charge pump controlled ramp up.
EECPM — Charge Pump Monitor Enable
0 = Normal operation.
1 = Output the charge pump voltage on the IRQ/V_PP pin.
EEPROG — EEPROM Control
Bit 7
6
5
4
3
2
BULKP
0
0
BYTE
ROW ERASE
RESET:
1
0
0
0
0
0
1
EELAT
0
Bit 0
EEPGM
0
$00F3
BULKP — Bulk Erase Protection
0 = EEPROM can be bulk erased.
1 = EEPROM is protected from being bulk or row erased.
Read anytime. Write anytime if EEPGM = 0 and PROTLCK = 0.
BYTE — Byte and Aligned Word Erase
0 = Bulk or row erase is enabled.
1 = One byte or one aligned word erase only.
Read anytime. Write anytime if EEPGM = 0.
ROW — Row or Bulk Erase (when BYTE = 0)
0 = Erase entire EEPROM array.
1 = Erase only one 32-byte row.
Read anytime. Write anytime if EEPGM = 0.
BYTE and ROW have no effect when ERASE = 0
Table 16 Erase Selection
BYTE
0
0
ROW
0
1
Block Size
Bulk erase entire EEPROM array
Row erase 32 bytes
1
0
1
1
Byte or aligned word erase
Byte or aligned word erase
If BYTE = 1 and test mode is not enabled, only the location specified by the address written to the pro-
gramming latches will be erased. The operation will be a byte or an aligned word erase depending on
the size of written data.
ERASE — Erase Control
0 = EEPROM configuration for programming or reading.
1 = EEPROM configuration for erasure.
Read anytime. Write anytime if EEPGM = 0.
Configures the EEPROM for erasure or programming.
When test mode is not enabled and unless BULKP is set, erasure is by byte, aligned word, row or bulk.
EELAT — EEPROM Latch Control
0 = EEPROM set up for normal reads.
1 = EEPROM address and data bus latches set up for programming or erasing.
Read anytime. Write anytime if EEPGM = 0.
NOTE
When EELAT is set, the entire EEPROM is unavailable for reads, therefore, no pro-
MC68HC912BL16
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For More Information On This Product, _{MC68HC912BL16TS/D}
Go to: www.freescale.com