mc68hc705e5 Freescale Semiconductor, Inc, mc68hc705e5 Datasheet - Page 112

• Manufacturer Part Number: mc68hc705e5
• Description: M68hc05 Family Of Microcontrollers Mcus
• Manufacturer: Freescale Semiconductor, Inc

User EPROM
13.4 Programming Register
General Release Specification
Address:
This register is used to program the EPROM array. Only the LATCH and
EPGM bits are available in user mode. To program a byte of EPROM,
set LATCH, write data to the desired address, then set EPGM for t
LATCH — EPROM Latch Control
EPGM — EPROM Program Control
Reset:
Read:
Write:
READ: Any time
WRITE: Any time
READ: Any time
WRITE: Cleared any time, set only if LATCH = 1
Freescale Semiconductor, Inc.
For More Information On This Product,
0 = EPROM address and data bus configured for normal reads
1 = EPROM address and data bus configured for programming.
0 = Programming power switched off the EPROM array
1 = Programming power switched on to the EPROM array. If
$0011
Bit 7
—
Causes address and data bus to be latched when a write to
EPROM is done. EPROM cannot be read if LATCH = 1.
LATCH = 0, then EPGM is cleared automatically. EPGM
cannot be set if LATCH is not set. LATCH and EPGM cannot
both be set on the same write.
0
Figure 13-4. Programming Register (PROG)
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—
6
0
User EPROM
—
5
0
—
4
0
—
3
1
LATCH
MC68HC705E5
2
0
1
0
0
—
Rev. 1.0
EPGM
EPGM
Bit 0
0
.