AT89C2051 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89C2051

8-bit Microcontroller with 2K Bytes Flash

Atmel Corporation 

2. Pin Configuration

2.1 20-lead PDIP/SOIC

3. Block Diagram

RST/VPP 1

(RXD) P3.0 2

(TXD) P3.1 3

XTAL2 4

XTAL1 5

(INT0) P3.2 6

(INT1) P3.3 7

(TO) P3.4 8

(T1) P3.5 9

GND 10

20 VCC

19 P1.7

18 P1.6

17 P1.5

16 P1.4

15 P1.3

14 P1.2

13 P1.1 (AIN1)

12 P1.0 (AIN0)

11 P3.7

2 AT89C2051

0368G–MICRO–6/05

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