AT89C51RC-33AC ATMEL Corporation, AT89C51RC-33AC Datasheet - Page 26
AT89C51RC-33AC
Manufacturer Part Number
AT89C51RC-33AC
Description
8-bit Microcontroller with 32K Bytes Flash
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51RC-33AC.pdf
(37 pages)
- Current page: 26 of 37
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Flash Programming and Verification Waveforms
Lock Bit Programming
26
AT89C51RC
Lockbit_1, 2 or 3
P1.0 - P1.7
P2.0 - P2.5
Test Conditions
ALE/PROG
(RDY/BSY)
(ENABLE)
PORT 0
P3.0
V
ALE/PROG
Data Setup
P2.7
EA/V
CC
P3.4
= 6.5V
Setup
PP
t
t
SHGL
AVGL
t
EHSH
V
PROGRAMMING
PP
t
DVGL
ADDRESS
DATA IN
t
100 µs
GLGH
t
GHBL
t
GHDX
t
ELQV
t
GHAX
t
GHSL
LOGIC 1
LOGIC 0
BUSY
t
WC
VERIFICATION
DATA OUT
ADDRESS
t
AVQV
V
READY
CC
Wait 10 ms to reload
new lock bit status
= 4.5V to 5.5V
t
EHQZ
1920B–MICRO–11/02
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