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AT89C51ED2-RDTIM Datasheet(PDF) 3 Page - ATMEL Corporation

Part # AT89C51ED2-RDTIM
Description  8-bit Flash Microcontroller
PDF  137 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C51ED2-RDTIM Datasheet(HTML) 3 Page - ATMEL Corporation

  AT89C51ED2-RDTIM Datasheet HTML 1Page - ATMEL Corporation AT89C51ED2-RDTIM Datasheet HTML 2Page - ATMEL Corporation AT89C51ED2-RDTIM Datasheet HTML 3Page - ATMEL Corporation AT89C51ED2-RDTIM Datasheet HTML 4Page - ATMEL Corporation AT89C51ED2-RDTIM Datasheet HTML 5Page - ATMEL Corporation AT89C51ED2-RDTIM Datasheet HTML 6Page - ATMEL Corporation AT89C51ED2-RDTIM Datasheet HTML 7Page - ATMEL Corporation AT89C51ED2-RDTIM Datasheet HTML 8Page - ATMEL Corporation AT89C51ED2-RDTIM Datasheet HTML 9Page - ATMEL Corporation Next Button
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3
AT89C51RD2/ED2
4235E–8051–04/04
Block Diagram
Figure 1. Block Diagram
Timer 0
INT
RAM
256x8
WR
RD
EA
PSEN
ALE/
XTALA2
XTALA1
EUART
CPU
Timer 1
Ctrl
(2)
(2)
C51
CORE
(2) (2)
(2) (2)
Port 0 Port 1Port 2 Port 3
XRAM
1792 x 8
IB-bus
PCA
PROG
Watch
-dog
(2)
(2)
(1)
(1): Alternate function of Port 1
(2): Alternate function of Port 3
(1)
Timer2
(1)
(1)
Flash
64K x 8
Keyboard
(1)
Port4
(1) (1) (1)(1)
BOOT
2K x 8
ROM
Regulator
POR / PFD
Port 5
Parallel I/O Ports &
External Bus
SPI
EEPROM*
2K x 8
(AT89C51ED2)



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