AT89C2051-24PU 8051 89C Motor Driver IC Microcontroller 8 Bit 24MHz 2KB 2K X 8 Flash

AT89C2051-24PU 8051 89C Microcontroller IC 8-Bit 24MHz 2KB (2K x 8) FLASH

Description

The AT89C2051 is a low-voltage, high-performance CMOS 8-bit microcomputer with

2K 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. By combining a

versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C2051 is a power-

ful microcomputer which provides a highly-flexible and cost-effective solution to many

embedded control applications.

The AT89C2051 provides the following standard features: 2K bytes of Flash, 128

bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five vector two-level interrupt

architecture, a full duplex serial port, a precision analog comparator, on-chip oscillator

and clock circuitry. In addition, the AT89C2051 is designed with static logic for opera-

tion 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.