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89C51

atmel
Part Number 89C51
Manufacturer atmel
Description 8 Bit Microcontroller with 4 Kbytes Flash
Published Apr 27, 2005
Detailed Description Features • • • • • • • • • • Compatible with MCS-51™ Products 4 Kbytes of In-System Reprogrammable Flash Memory Endura...
Datasheet PDF File 89C51 PDF File

89C51
89C51

Overview
Features • • • • • • • • • • Compatible with MCS-51™ Products 4 Kbytes of In-System Reprogrammable Flash Memory Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-Level Program Memory Lock 128 x 8-Bit Internal RAM 32 Programmable I/O Lines Two 16-Bit Timer/Counters Six Interrupt Sources Programmable Serial Channel Low Power Idle and Power Down Modes Description The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4 Kbytes of Flash Programmable and Erasable Read Only Memory (PEROM).
The device is manufactured using Atmel’s high density nonvolatile memory technology and is compatible with the industry standard MCS-51™ instruction set and pinout.
The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.
By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C51 is a powerful microcomputer which provides a highly flexible and cost effective solution to many embedded control applications.
(continued) PDIP/Cerdip P1.
0 P1.
1 P1.
2 P1.
3 P1.
4 P1.
5 P1.
6 P1.
7 RST (RXD) P3.
0 (TXD) P3.
1 (INT0) P3.
2 (INT1) P3.
3 (T0) P3.
4 (T1) P3.
5 (WR) P3.
6 (RD) P3.
7 X TA L 2 X TA L 1 GND 8-Bit Microcontroller with 4 Kbytes Flash AT89C51 Pin Configurations PQFP/TQFP (AD0) (AD1) (AD2) (AD3) 44 42 40 38 36 34 43 41 39 37 35 P1.
5 P1.
6 P1.
7 RST P3.
0 NC P3.
1 P3.
2 P3.
3 P3.
4 P3.
5 P1.
4 P1.
3 P1.
2 P1.
1 P1.
0 NC VCC P0.
0 P0.
1 P0.
2 P0.
3 INDEX CORNER (RXD) (TXD) (INT0) (INT1) (T0) (T1) 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 12 14 16 18 20 22 33 32 31 30 29 28 27 26 25 24 23 (RXD) (TXD) (INT0) (INT1) (T0) (T1) P1.
5 P1.
6 P1.
7 RST P3.
0 NC P3.
1 P3.
2 P3.
3 P3.
4 P3.
5 6 4 2 44 42 40 1 5 3 4 3 4 13 9 7 8 38 9 37 36 10 35 11 34 12 33 13 32 14 31 15 16 30 1 7 1 9 2 1 2 3 2 5 2 72 9 18 20 22 24 26 28 (WR) P3.
6 (RD) P3.
7 X TA L 2 X TA L 1 GND NC (A8) P2.
0 (A9) P2.
1 (A10) P2.
2 (A11) P2.
3 (A12) P2.
4 P1.
4 P1.
3 P1.
2 P1.
1 P1.
0 NC VCC P0.
0 P0.
1 P0.
2 P0.
3 P0.
4 (AD4) P0.
5 ...


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