AT89C4051-12PU

ATMEL  AT89C4051-12PU  微控制器, 8位, 高性能 CMOS, AT89C4051, 12 MHz, 2 KB, 128 Byte, 20 引脚, DIP

The is a low-voltage, high-performance 8-bit CMOS Microcontroller with 4kB of flash programmable and erasable read-only memory PEROM. The device uses Atmel"s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set. This versatile 8-bit CPU with flash provides a highly-flexible solution for many embedded control applications. The microcontroller features 128byte of RAM, 15 I/O lines, two 16-bit timers/counters, a five-vector, two-level interrupt architecture, a full duplex serial port, a precision analog comparator, on-chip oscillator and clock circuitry. It 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.

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0 to 24MHz Fully static operation

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Two-level program memory lock

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28 x 8-bit Internal RAM

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15 Programmable I/O lines

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Two 16-bit timers/counters

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Six interrupt sources

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Programmable serial UART channel

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Direct LED drive outputs

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On-chip analog comparator

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Low power idle and powerdown modes

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Brown-out detection

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Power-on reset POR