Technical Data
MC68HC11E Family
—
Rev. 4
96
Operating Modes and On-Chip Memory
MOTOROLA
Operating Modes and On-Chip Memory
ERASE
—
Erase Mode Select Bit
Refer to
4.6 EEPROM
.
EELAT
—
EEPROM Latch Control Bit
Refer to
4.6 EEPROM
.
EPGM
—
EPROM/OTPROM/EEPROM Programming
Voltage Enable Bit
EPGM can be read any time and can be written only when ELAT = 1
(for EPROM/OTPROM programming) or when EELAT = 1 (for
EEPROM programming).
0 = Programming voltage to EPROM/OTPROM/EEPROM array
disconnected
1 = Programming voltage to EPROM/OTPROM/EEPROM array
connected
MBE
—
Multiple-Byte Programming Enable Bit
When multiple-byte programming is enabled, address bit 5 is
considered a don
’
t care so that bytes with address bit 5 = 0 and
address bit 5 = 1 both get programmed. MBE can be read in any mode
and always reads 0 in normal modes. MBE can be written only in
special modes.
0 = EPROM array configured for normal programming
1 = Program two bytes with the same data
Bit 6
—
Unimplemented
Always reads 0
Address:
$1036
Bit 7
6
5
4
3
2
1
Bit 0
Read:
MBE
ELAT
EXCOL
EXROW
T1
T0
PGM
Write:
Reset:
0
0
0
0
0
0
0
0
= Unimplemented
Figure 4-15. MC68HC711E20 EPROM Programming
Control Register (EPROG)