mc68hc11d0cfn2 Freescale Semiconductor, Inc, mc68hc11d0cfn2 Datasheet - Page 33

• Manufacturer Part Number: mc68hc11d0cfn2
• Description: M68hc11 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

2.4.3 PROM Programming Control Register
MC68HC711D3 — Rev. 2
MOTOROLA
The PROM programming control register (PPROG) is used to control the
programming of the OTPROM or EPROM. PPROG is cleared on reset so that the
PROM is configured for normal read.
MBE — Multiple Byte Program Enable Bit
Bit 6, 2, and 1 — Not implemented
ELAT — EPROM (OTPROM) Latch Control Bit
EXCOL — Select Extra Columns Bit
EXROW — Select Extra Row Bit
PGM — EPROM (OTPROM) Program Command Bit
Address: $003B
This bit is reserved for testing.
Always read 0.
This bit is reserved for testing.
This bit is reserved for testing.
This bit may be written only when ELAT = 1.
Reset:
Read:
Write:
1 = PROM address and data bus are configured for programming. Writes to
0 = PROM address and data bus are configured for normal reads. PROM
1 = Programming power is switched on to PROM array.
0 = Programming power is switched off.
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 2-5. PROM Programming Control Register (PPROG)
PROM cause address and data to be latched. The PROM cannot be
read.
cannot be programmed.
MBE
Bit 7
0
Operating Modes and Memory
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6
0
0
ELAT
5
0
EXCOL
4
0
Programmable Read-Only Memory (PROM)
EXROW
3
0
Operating Modes and Memory
2
0
0
1
0
0
Data Sheet
PGM
Bit 0
0
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