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T89C51RD2-RDRC-M Datasheet(PDF) 2 Page - ATMEL Corporation

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

T89C51RD2-RDRC-M Datasheet(HTML) 2 Page - ATMEL Corporation

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Rev. F - 15 February, 2001
T89C51RD2
Power supply:
- M version: Commercial and industrial
4.5V to 5.5V : 40MHz X1 Mode, 20MHz X2 Mode
3V to 5.5V : 33MHz X1 Mode, 16 MHz X2 Mode
- L version: Commercial and industrial
2.7V to 3.6V : 25MHz X1 Mode, 12MHz X2 Mode
Temperature ranges: Commercial (0 to +70°C) and industrial (-40 to +85°C).
Packages: PDIL40, PLCC44, VQFP44, PLCC68, VQFP64
Table 1. Memory Size
3. Block Diagram
PDIL40
PLCC44
VQFP44 1.4
Flash (bytes)
EEPROM (bytes)
XRAM (bytes)
TOTAL RAM
(bytes)
I/O
T89C51RD2
64k
2k
1024
1280
32
PLCC68
VQFP64 1.4
Flash (bytes)
EEPROM
(bytes)
XRAM (bytes)
TOTAL RAM
(bytes)
I/O
T89C51RD2
64k
2k
1024
1280
48
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): Alternate function of Port 1
(3): Alternate function of Port 3
(1)
Timer2
(1)
(1)
Port 5
Port 4
(2): Only available on high pin count packages
(2)
(2)
Flash
64Kx8
EEPROM
2Kx8


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