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Part Name
Description
AT89C2051X2-8PI View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
AT89C2051X2-8PI
8-bit Microcontroller with 2K Bytes Flash
Atmel Corporation
AT89C2051X2-8PI Datasheet PDF : 19 Pages
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AT89C2051x2
Flash Programming Modes
Mode
Write Code Data
(1)(3)
RST/VPP
12V
P3.2/PROG
P3.3
L
P3.4
H
P3.5
H
P3.7
H
Read Code Data
(1)
Write Lock
H
Bit - 1
12V
H
L
L
H
H
H
H
H
H
Bit - 2
12V
H
H
L
L
Chip Erase
12V
H
L
L
L
(2)
Read Signature Byte
H
H
L
L
L
L
Notes:
1. The internal memory address counter is reset to 000H on the rising edge of RST and is advanced by a positive pulse at
XTAL1 pin.
2. Chip Erase requires a 10 ms PROG pulse.
3. P3.1 is pulled Low during programming to indicate RDY/BSY.
9
3285B–MICRO–10/03
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