Atmel AT89C51
The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4K bytes 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.| Part No. | AT89C51 |
|---|---|
| Datasheet | AT89C51 Download |
| Manufacturer |  Atmel |
| Description | 8-Bit Microcontroller |
| Buy | Stock & Price |
FEATURES
● Compatible with MCS-51™ Products● 4K Bytes 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
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. (WR)P3.6 12 (RD) P3.7 13 XTAL2 14 XTAL1 15 GND 16 GND 17 (A8) P2.0 18 (A9) P2.1 19 (A10) P2.2 20 (A11) P2.3 21 (A12) P2.4 22 44 43 42 41 40 39 38 37 36 35 34 P1.4 P1.3 P1.2 P1.1 (T2 EX) P1.0 (T2) NC VCC P0.0 (AD0) P0.1 (AD1) P0.2 (AD2) P0.3 (AD3) Pin Configurations PQFP/TQFP P1.5 P1.6 P1.7 RST (RXD) P3.0 NC (TXD) P3.1 (INT0) P3.2 (INT1) P3.3 (T0) P3.4 (T1) P3.5 1 2 3 4 5 6 7 8 9 10 11 33 PO.4 (AD4) 32 P0.5 (AD5) 31 P0.6 (AD6) 30 P0.7 (AD7) 29 EA/VPP 28 NC 27 ALE/PROG 26 PSEN 25 P2.7 (A15) 24 P2.6 (A14) 23 P2.5 (A13) PDIP P1.0 P1.1 P1.
