MC68HC705JP7 Datasheet, PDF (177/242 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Personality EPROM (PEPROM)
PEPROM Registers
12.3 PEPROM Registers
Two I/O registers control programming and reading of the PEPROM:
• The PEPROM bit select register (PEBSR)
• The PEPROM status and control register (PESCR)
12.3.1 PEPROM Bit Select Register
The PEPROM bit select register (PEBSR) selects one of 64 bits in the
PEPROM array. Reset clears all the bits in the PEPROM bit select
register.
Address: $000E
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Write:
PEB7
PEB6
PEB5
PEB4
PEB3
PEB2
PEB1
PEB0
Reset: 0
0
0
0
0
0
0
0
Figure 12-2. PEPROM Bit Select Register (PEBSR)
PEB7 and PEB6 — Not connected to the PEPROM array
These read/write bits are available as storage locations. Reset clears
PEB7 and PEB6.
PEB5–PEB0 — PEPROM Bit Selects
These read/write bits select one of 64 bits in the PEPROM as shown
in Table 12-1. Bits PEB2–0 select the PEPROM row, and bits
PEB5–PEB3 select the PEPROM column. Reset clears PEB5–PEB0,
selecting the PEPROM bit in row zero, column zero.
MC68HC705JJ7 • MC68HC705JP7 — REV 4
MOTOROLA
Personality EPROM (PEPROM)
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