參數(shù)資料
型號： 935260531512
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQCC44
封裝： PLASTIC, LCC-44
文件頁數(shù)： 62/67頁
文件大?。?/td> 400K
代理商： 935260531512
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P89C738; P89C739
Information as of 2000-08-24
P89C738; P89C739; 8-bit Flash microcontrollers
The P89C738 and P89C739 (hereafter generally referred to as P89C738 unless the P89C739 is specifically mentioned) are 8 8-bit Flash
microcontrollers manufactured in an advanced CMOS process and is a derivative of the PCB80C51 microcontroller family. This device
provides architectural enhancements that make it applicable in a variety of applications in general control systems, especially in those
systems which need a large on-chip ROM and RAM capacity.
The P89C738 contains a non-volatile 64-kbyte Multiple Programming ROM (MTP-ROM) program memory, a volatile 512 bytes read/write
data memory, four 8-bit I/O ports (six for the P89C739), two 16-bit timer/event counters (identical to the timers of the 80C51), a 16-bit timer
(identical to the Timer 2 of the 8052), a multi-source two-priority-level nested interrupt structure, one serial interface (UART), a Watchdog
Timer (T3), an on-chip oscillator and timing circuits. For systems that require extra capability, the P89C738 can be expanded using
standard TTL compatible memories and logic.
The device also functions as an arithmetic processor having facilities for both binary and BCD arithmetic plus bit-handling capabilities. The
P89C738 has the same instruction set as the PCB80C51 which consists of over 100 instructions: 49 one-byte, 46 two-byte and 16 three-
byte. With a 16 MHz crystal, 58% of the instructions are executed in 750 ns and 40% in 1.5 s. Multiply and divide instructions require 3 s.
l
80C51 CPU
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64-kbyte on-chip Multiple Programming ROM (MTP-ROM), expandable externally to 64 kbytes program memory address space
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512-byte on-chip RAM, expandable externally to 64 kbytes data memory address space
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P89C738 pin outs fully compatible to the standard 8051/8052
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8-bit I/O ports for P89C738: 4 and P89C739: 6
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Full-duplex UART compatible with the standard 80C51 and the 8052
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Two standard 16-bit timers/event counters
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An additional 16-bit timer (functionally equivalent to the Timer 2 of the 8052)
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