AT89C1051 Datasheet | Atmel

Features - patible with MCS-51™ Products - 1K Byte of Reprogrammable Flash Memory - - - - - - - - - - - Endurance: 1,000 Write/Erase Cycles 2.7V to 6V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-Level Program Memory Lock 64 bytes SRAM 15 Programmable I/O Lines One 16-Bit Timer/Counter Three Interrupt Sources Direct LED Drive Outputs On-Chip Analog parator Low Power Idle and Power Down Modes Description The AT89C1051 is a low-voltage, high-performance CMOS 8-bit microputer with 1K byte of Flash programmable and erasable read only memory (PEROM). The device is manufactured using Atmel’s high density nonvolatile memory technology and is patible with the industry standard MCS-51™ instruction set. By bining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C1051 is a powerful microputer which provides a highly flexible and cost effective solution to many embedded control applications. The AT89C1051 provides the following standard features : 1K Byte of Flash, 64 bytes of RAM, 15 I/O lines, one 16-bit timer/counter, a three vector two-level interrupt architecture, a precision analog parator, on-chip oscillator and clock circuitry. In addition, the AT89C1051 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port and interrupt system to continue functioning. The Power Down Mode saves the RAM contents but freezes the oscillator disabling all other chip functions until the next hardware reset. 8-Bit Microcontroller with 1K Byte Flash AT89C1051 Pin Configuration PDIP/SOIC 0366D-A- 12/97 4-3 Block Diagram VCC RAM ADDR. REGISTER RAM FLASH B REGISTER STACK POINTER PROGRAM ADDRESS REGISTER BUFFER TMP2 TMP1 ALU INTERRUPT, AND TIMER BLOCKS PC INCREMENTER PROGRAM COUNTER TIMING AND CONTROL INSTRUCTION REGISTER DPTR ANALOG PARATOR + OSC PORT 1 LATCH PORT 3 LATCH PORT...