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AT89C55WD_05 Datasheet(Folha de dados) 3 Page - ATMEL Corporation

Nome de Peças. AT89C55WD_05
descrição  8-bit Microcontroller with 20K Bytes Flash
Download  35 Pages
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Fbricantes  ATMEL [ATMEL Corporation]
Página de início  http://www.atmel.com
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 3 page
background image
3
1921C–MICRO–3/05
AT89C55WD
3.
Block Diagram
PORT 2 DRIVERS
PORT 2
LATCH
P2.0 - P2.7
QUICK
FLASH
PORT 0
LATCH
RAM
PROGRAM
ADDRESS
REGISTER
BUFFER
PC
INCREMENTER
PROGRAM
COUNTER
DUAL
DPTR
RAM ADDR.
REGISTER
INSTRUCTION
REGISTER
B
REGISTER
INTERRUPT, SERIAL PORT,
AND TIMER BLOCKS
STACK
POINTER
ACC
TMP2
TMP1
ALU
PSW
TIMING
AND
CONTROL
PORT 3
LATCH
PORT 3 DRIVERS
P3.0 - P3.7
PORT 1
LATCH
PORT 1 DRIVERS
P1.0 - P1.7
OSC
GND
V
CC
PSEN
ALE/PROG
EA / V
PP
RST
PORT 0 DRIVERS
P0.0 - P0.7
WATCH
DOG




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