參數(shù)資料
型號(hào)： AT83C51RC2XXX-SLSIM
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Microcontroller
中文描述： 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PQCC44
封裝： PLASTIC, LCC-44
文件頁(yè)數(shù)： 1/81頁(yè)
文件大?。?/td> 1082K
代理商： AT83C51RC2XXX-SLSIM
Rev. 4113A–8051–09/02
Features
80C52 Compatible
– Four 8-bit I/O Ports
– Three 16-bit Timer/Counters
– 256 Bytes Scratch Pad RAM
– 8 Interrupt Sources with 4 Priority Levels
– Dual Data Pointer
Variable Length MOVX for Slow RAM/Peripherals
High-speed Architecture
– 10 to 40 MHz in Standard Mode
16K/32K Bytes On-Chip ROM Program
T80C51RD2 ROMless Versions
On-Chip 1024 bytes Expanded RAM (XRAM)
– Software Selectable Size (0, 256, 512, 768, 1024 bytes)
– 256 Bytes Selected at Reset for AT87C51RB2/RC2 Compatibility
Keyboard Interrupt Interface on Port P1
8-bit Clock Prescaler
64K Program and Data Memory Spaces
Improved X2 Mode with Independant Selection for CPU and Each Peripheral
Programmable Counter Array 5 Channels with:
–
High-speed Output
–
Compare/Capture
–
Pulse Width Modulator
–
Watchdog Timer Capabilities
Asynchronous Port Reset
Full Duplex Enhanced UART
Dedicated Baud Rate Generator for UART
Low EMI (Inhibit ALE)
Hardware Watchdog Timer (One-time Enabled with Reset-out)
Power Control Modes
– Idle Mode
– Power-down Mode
– Power-off Flag
Power Supply: 2.7V to 5.5V or 2.7V to 3.6V
Temperature Ranges: Commercial (0 to +70
°
C) and Industrial (-40
°
C to +85
°
C)
Packages: PDIL40, PLCC44, VQFP44
Description
AT8xC51Rx2 microcontrollers are high performance ROM versions of the 80C51 8-bit
microcontrollers. They contain a 0K, 16K or 32K bytes ROM memory block for
program.
The microcontrollers retain all features of the Atmel 80C52 with 256 bytes of internal
RAM, a 7-source 4-level interrupt controller and three timer/counters.
In addition, the microcontrollers have a Programmable Counter Array, an XRAM of
1024 byte, a Hardware Watchdog Timer, a Keyboard Interface, a more versatile serial
channel that facilitates multiprocessor communication (EUART) and a speed improve-
ment mechanism (X2 mode).
The microcontrollers have 2 software-selectable modes of reduced activity and 8 bit
clock prescaler for further reduction in power consumption. In Idle mode, the CPU is
frozen while the peripherals and the interrupt system are still operating. In the Power-
down mode, the RAM is saved and all other functions are inoperative.
80C51 High
Performance
ROM 8-bit
Microcontroller
AT80C51RD2
AT83C51RB2
AT83C51RC2
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