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T89C51RD2-RDTIL Datasheet(PDF) 3 Page - ATMEL Corporation

Part # T89C51RD2-RDTIL
Description  0 to 40 MHz Flash Programmable 8-bit Microcontroller
PDF  104 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

T89C51RD2-RDTIL Datasheet(HTML) 3 Page - ATMEL Corporation

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T89C51RD2
4243G–8051–05/03
Block Diagram
Notes:
1. Alternate function of Port 1.
2. Only available on high pin count packages.
3. Alternate function of Port 3.
Timer 0
INT
RAM
256x8
WR
RD
EA
PSEN
ALE/
XTAL2
XTAL1
EUART
CPU
Timer 1
Ctrl
(3)
(3)
C51
CORE
(3) (3)
(3) (3)
Port 0 Port 1 Port 2 Port 3
Parallel I/O Ports & Ext. Bus
XRAM
1Kx8
IB-bus
PCA
PROG
Watch
Dog
(3)
(3)
(1)
(1)
Timer2
(1)
(1)
Port 5
Port 4
(2)
(2)
Flash
64Kx8
EEPROM
2Kx8



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