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AT89C55WD-24AI датащи(PDF) 22 Page - ATMEL Corporation

номер детали AT89C55WD-24AI
подробное описание детали  8-bit Microcontroller with 20K Bytes Flash
PDF  35 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C55WD-24AI датащи(HTML) 22 Page - ATMEL Corporation

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1921C–MICRO–3/05
AT89C55WD
Notes:
1. Write Code Data requires a 200 ns PROG pulse.
2. Write Lock Bits requires a 100 µs PROG pulse.
3. Chip Erase requires a 200 ns - 500 ns PROG pulse.
4. RDY/BSY signal is output on P3.0 during programming.
Table 21-1.
Flash Programming Modes
Mode
V
CC
RST
PSEN
ALE/
PROG
EA/
V
PP
P2.6
P2.7
P3.3
P3.6
P3.7
P0.7-0
Data
P3.4
P2.5-0
P1.7-0
Address
Write Code
Data
5V
H
L
(1)
12V
L
H
H
H
H
D
IN
A14
A13-8
A7-0
Read Code
Data
5V
HL
HH/12V
L
L
L
H
H
D
OUT
A14
A13-8
A7-0
Write Lock Bit
1
6.5
V
HL
(2)
12V
H
H
H
H
H
X
X
X
X
Write Lock Bit
2
6.5
V
HL
(2)
12V
H
H
H
L
L
X
X
X
X
Write Lock Bit
3
6.5
V
HL
(2)
12V
H
L
H
H
L
X
X
X
X
Read Lock Bits
1, 2, 3
5V
H
L
H
H
H
H
L
H
L
P0.2,
P0.3,
P0.4
XX
X
Chip Erase
6.5
V
HL
(3)
12V
H
L
H
L
L
X
X
X
X
Read Atmel ID
5V
H
L
H
H
L
L
L
L
L
1EH
X
XX 0000
00H
Read Device
ID
5V
H
L
H
H
L
L
L
L
L
55H
X
XX 0001
00H
Read Device
ID
5V
H
L
H
H
L
L
L
L
L
06H
X
XX 0010
00H



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