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The H854/65 is a single-chip microcontroller, which is available in low cost packages, and is designed around a high performance processor architecture that executes instructions in two to four clocks, six times the rate of standard 80C51 devices. In order to reduce component count, board space, and system cost, many system-level functions have been incorporated into the device. Features- Input multiplexed 8-bit ADC/single DAC output. Two analog comparators with selectable inputs and reference source. - A 23-bit system timer that may also be used as real-time clock comprised of a 7-bit prescaler and a programmable and readable 16-bit timer.- Two 16-bit counter/timers. Timer 0 (and Timer 1 - P89LPC9171) may be configured to toggle a port output upon timer overflow or to become a PWM output.- Enhanced UART with a fractional baud rate generator, break detect, framing error detection, and automatic address detection; 400 kHz byte-wide I2C-bus communication port. - SPI communication port (P89LPC9161).- 2.4 V to 3.6 V VDD operating range. I/O pins are 5 V tolerant (may be pulled up or driven to 5.5 V).- Enhanced low voltage (brownout) detect allows a controlled system shutdown when power fails.- 16-pin TSSOP with 12 I/O pins minimum and up to 14 I/O pins while using on-chip oscillator and reset options (P89LPC9161/9171), and 14-pin TSSOP packages with 10 I/O pins minimum and up to 12 I/O pins while using on-chip oscillator and reset options (P89LPC9151). 附加功能-高性能 80c51 CPU 提供運算速度時間的 111 至 222 ns ns 除乘法和除法執行 18 mhz 時的所有說明。這是性能標準 80 C 51 運行在相同的時鐘頻率的六倍。較低的時鐘頻率為相同的性能意味著節省電源和減少 EMI。--應用程式設計 (IAP 簡裝) 和位元組擦除允許代碼記憶體可用於非易失性資料存儲。-串列 flash 在電路程式設計 (ICP) 允許簡單生產編碼使用商用 EPROM 程式設計器。Flash 安全位防止敏感應用程式讀
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