P89LPC921FDH,512

NXP  P89LPC921FDH,512  芯片, 8位微控制器, 80C51, 18MHZ, TSSOP-20

The is a 8-bit Microcontroller based on a high performance processor architecture that executes instructions in two to four clocks, six times the rate of standard 80C51 devices. The device features 4kB flash code memory with 1kB erasable sectors and 64-byte erasable page size and single byte erase, 256-byte RAM data memory, two 16-bit counter/timers, real-time clock that can also be used as a system timer, two analog comparators with selectable inputs and reference source and 400kHz byte-wide I2C-bus communication port.

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High performance 80C51 CPU

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In-application programming of the flash code memory

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Serial flash in-circuit programming ICP

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Watchdog timer with separate on-chip oscillator

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Low voltage brownout detect

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Idle mode

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Active-LOW reset

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Oscillator fail detect

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Port input pattern match detect

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LED drive capability 20mA on all port pins

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Controlled slew rate port outputs to reduce EMI

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4 Interrupt priority levels

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8 Keypad interrupt inputs, plus two additional external interrupt inputs

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Second data pointer

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Schmitt trigger port inputs

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Emulation support