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AT89C51RB2-SLSUM 其他数据使用手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
PLCC-44
描述:
51系列 60MHz 16K@x8bit
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AT89C51RB2-SLSUM数据手册
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1. General description
The P89CV51RB2/RC2/RD2 are three types of 80C51 microcontroller with respectively
16 kB/32 kB/64 kB flash and 1 kB of data RAM. These devices are designed to be drop-in
and software-compatible replacements for the popular P89C51RB2/RC2/RD2 devices.
Both the In-System Programming (ISP) and In-Application Programming (IAP) boot codes
are upward compatible.
Additional features of the P89CV51RB2/RC2/RD2 devices compared to the
P89C51RB2/RC2/RD2 are the inclusion of an SPI interface, larger RAM size, and the
ability to erase code memory in 128-B page blocks.
The IAP capability combined with the 128-B page size allows for efficient use of the code
memory for non-volatile data storage.
2. Features
2.1 Principal features
n Supports 12-clock (default) or 6-clock mode selection via ISP or parallel programmer
n 6-clock/12-clock mode programmable “on-the-fly” by an SFR bit
n Peripherals (PCA, timers, UART) may use either 6-clock or 12-clock mode while the
CPU is in 6-clock mode
n 128-B page erase for efficient use of code memory as non-volatile data storage
n 0 MHz to 40 MHz operating frequency in 12× mode, 20 MHz in 6× mode
n 16/32/64 kB of on-chip flash user-code memory with ISP and IAP
n 1 kB RAM
n SPI (Serial Peripheral Interface) and enhanced UART
n PCA (Programmable Counter Array) with PWM and capture/compare functions
n Three 16-bit timers/counters
2.2 Additional features
n Four 8-bit I/O ports
n WatchDog Timer (WDT)
n 30 ms page erase, 150 ms block erase
n PLCC44 and TQFP44 packages
n Ten interrupt sources with four priority levels
n Second DPTR register
n Low EMI mode (ALE inhibit)
P89CV51RB2/RC2/RD2
8-bit 80C51 5 V low power 64 kB flash microcontroller with
1 kB RAM, SPI, 6-clock CPU with 6/12-clock peripherals
Rev. 03 — 25 August 2009 Product data sheet
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