at89c4051-12si ATMEL Corporation, at89c4051-12si Datasheet - Page 2

• Manufacturer Part Number: at89c4051-12si
• Description: At89c4051 8-bit Microcontroller With 4k Bytes Flash
• Manufacturer: ATMEL Corporation

2. Pin Configuration
2.1
3. Block Diagram
2
PDIP/SOIC
AT89C4051
(INT0) P3.2
(INT1) P3.3
(RXD) P3.0
(TXD) P3.1
(TO) P3.4
RST/VPP
(T1) P3.5
XTAL2
XTAL1
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
P1.7
P1.6
P1.5
P1.4
P1.3
P1.2
P1.1 (AIN1)
P1.0 (AIN0)
P3.7
1001E–MICRO–6/05