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P89V51RC2

更新时间： 2024-11-11 22:50:47
品牌 Logo 应用领域
恩智浦 - NXP 闪存微控制器
页数 文件大小 规格书
77页 339K
描述
8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM

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P89V51RC2 数据手册

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P89V51RB2/RC2/RD2  
8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller  
with 1 kB RAM  
Rev. 03 — 02 December 2004  
Product data  
1. General description  
The P89V51RB2/RC2/RD2 are 80C51 microcontrollers with 16/32/64 kB Flash and  
1024 bytes of data RAM.  
A key feature of the P89V51RB2/RC2/RD2 is its X2 mode option. The design  
engineer can choose to run the application with the conventional 80C51 clock rate  
(12 clocks per machine cycle) or select the X2 mode (6 clocks per machine cycle) to  
achieve twice the throughput at the same clock frequency. Another way to benefit  
from this feature is to keep the same performance by reducing the clock frequency by  
half, thus dramatically reducing the EMI.  
The Flash program memory supports both parallel programming and in serial  
In-System Programming (ISP). Parallel programming mode offers gang-programming  
at high speed, reducing programming costs and time to market. ISP allows a device  
to be reprogrammed in the end product under software control. The capability to  
field/update the application firmware makes a wide range of applications possible.  
The P89V51RB2/RC2/RD2 is also In-Application Programmable (IAP), allowing the  
Flash program memory to be reconfigured even while the application is running.  
2. Features  
■ 80C51 Central Processing Unit  
■ 5 V Operating voltage from 0 MHz to 40 MHz  
■ 16/32/64 kB of on-chip Flash user code memory with ISP (In-System  
Programming) and IAP (In-Application Programming)  
■ Supports 12-clock (default) or 6-clock mode selection via software or ISP  
■ SPI (Serial Peripheral Interface) and enhanced UART  
■ PCA (Programmable Counter Array) with PWM and Capture/Compare functions  
■ Four 8-bit I/O ports with three high-current Port 1 pins (16 mA each)  
■ Three 16-bit timers/counters  
■ Programmable watchdog timer  
■ Eight interrupt sources with four priority levels  
■ Second DPTR register  
■ Low EMI mode (ALE inhibit)  
■ TTL- and CMOS-compatible logic levels  
1234567...77

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