MCMC68HC05L16 Freescale Semiconductor, Inc, MCMC68HC05L16 Datasheet - Page 138
MCMC68HC05L16
Manufacturer Part Number
MCMC68HC05L16
Description
M68hc05 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MCMC68HC05L16.pdf
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MC68HC705L16
A.10.2 Program Control Register
A program control register is provided for EPROM programming.
Bits 7–3 — Reserved
Bit 2 — Reserved
ELAT — EPROM LATch control
PGM — EPROM ProGraM command
138
These bits are reserved and read as logic 0 in user mode.
This bit is not used and always reads as logic 0.
0 = EPROM address and data bus configured for normal reads
1 = EPROM address and data bus configured for programming (Writes to EPROM cause address
0 = Programming power switched off from EPROM array
1 = Programming power switched on to EPROM array
and data to be latched.) EPROM is in programming mode and cannot be read if ELAT is logic
1. This bit should not be set when no programming voltage is applied to the V
If ELAT
Address:
Reset:
Read:
Write:
≠
1, then PGM = 0.
$000D
Bit 7
R
R
0
Figure A-5. Program Control Register (PCR)
MC68HC05L16 • MC68HC705L16 Data Sheet, Rev. 4.1
R
6
0
= Reserved
R
5
0
R
4
0
R
3
0
R
2
0
ELAT
1
0
Freescale Semiconductor
PGM
Bit 0
0
PP
pin.
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