MC68HC11EA9 Datasheet, PDF (20/58 Pages) Motorola, Inc – 8 BIT HCMOS SINGLE CHIP MICROCONTOROLLER WITH A/D CONVERTER

Freescale Semiconductor, Inc.
PPROG — EPROM and EEPROM Programming Control Register
RESET:
BIT 7
ODD
0
6
EVEN
0
5
ELAT*
0
4
BYTE
0
3
ROW
0
2
ERASE
0
* MC68HC711EA9 only.
1
EELAT
0
BIT 0
PGM
1
ODD — Program Odd Rows in Half of EEPROM (TEST)
EVEN — Program Even Rows in Half of EEPROM (TEST)
ELAT — EPROM/OTPROM Latch Control
MC68HC711EA9 only. Refer to 4.9.3 Programming EPROM with Downloaded Data.
BYTE — Byte/Other EEPROM Erase Mode
0 = Row or bulk erase mode used
1 = Erase only one byte of EEPROM
ROW — Row/All EEPROM Erase Mode (only valid when BYTE = 0)
0 = All 512 bytes of EEPROM erased
1 = Erase only one 16-byte row of EEPROM
Table 6 BYTE/ROW Control Bits
BYTE
0
0
1
1
ROW
0
1
0
1
Action
Bulk Erase (All 512 Bytes)
Row Erase (16 Bytes)
Byte Erase
Byte Erase
$103B
ERASE — Erase/Normal Control for EEPROM
0 = Normal read or program mode
1 = Erase mode
EELAT — EEPROM Latch Control
0 = EEPROM address and data bus configured for normal reads
1 = EEPROM address and data bus configured for programming or erasing
PGM — EPROM/OTPROM/EEPROM Programming Voltage Enable
0 = Programming voltage to EPROM/OTPROM/EEPROM array disconnected
1 = Programming voltage to EPROM/OTPROM/EEPROM array connected
PGM can be read any time and can only be written when ELAT = 1 (for EPROM/OTPROM program-
ming) or when EELAT = 1 (for EEPROM programming).
4.10.2 CONFIG Register
The CONFIG register consists of an EEPROM byte and static latches that control the start-up configu-
ration of the MCU. The contents of the EEPROM byte are transferred into static working latches during
reset sequences. The operation of the MCU is controlled directly by these latches and not by CONFIG
itself. Although the byte is not included in the 512-byte EEPROM array, programming the CONFIG reg-
ister requires the same procedure as any byte in the array. In normal modes, changes to CONFIG do
not affect operation of the MCU until after the next reset sequence. When programming, the CONFIG
register itself is accessed. When the CONFIG register is read, the static latches are accessed.
MC68HC11EA9
20
For More Information On This Product,
MC68HC11EA9TS/D
Go to: www.freescale.com