MC68HC705 MOTOROLA [Motorola, Inc], MC68HC705 Datasheet - Page 107

• Manufacturer Part Number: MC68HC705
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

9.3.1 Program Register
MC68HC705C8A — Rev. 2.0
MOTOROLA
Address:
The program register (PROG) shown in
programming.
LAT — Latch Enable Bit
PGM — Program Bit
Bits 1 and 3 7 — Not used; always read 0
Reset:
Read:
Write:
This bit is both readable and writable.
If LAT is cleared, PGM cannot be set.
1 = Enables PROM data and address bus latches for programming
0 = Latch disabled. PROM data and address buses are unlatched
1 = Enables V
0 = V
$001C
Bit 7
on the next byte write cycle
for normal CPU operations.
0
0
PP
EPROM/OTPROM (PROM)
is disabled.
Figure 9-3. Program Register (PROG)
6
0
0
PP
power to the PROM for programming
5
0
0
4
0
0
EPROM/OTPROM (PROM) Programming
Figure 9-3
3
0
0
EPROM/OTPROM (PROM)
LAT
2
0
is used for PROM
1
0
0
Technical Data
PGM
Bit 0
0
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