AT80C51RA2-3CSUM Datasheet PDF - ATMEL

●Description

●Atmel TS8xC51Rx2 is a high performance CMOS ROM, OTP, EPROM and ROMless versions of the 80C51 CMOS single chip 8-bit microcontroller. The TS8xC51Rx2 retains all features of the 80C51 with extended ROM/EPROM capacity (16/32/64 Kbytes), 256 bytes of internal RAM, a 7-source , 4-level interrupt system, an on-chip oscilator and three timer/counters.

●Features

●• 80C52 Compatible

●– 8051 pin and instruction compatible

●– Four 8-bit I/O ports

●– Three 16-bit timer/counters

●– 256 bytes scratchpad RAM

●• High-Speed Architecture

●– 40 MHz @ 5V, 30MHz @ 3V

●– X2 Speed Improvement capability (6 clocks/machine cycle)

●– 30 MHz @ 5V, 20 MHz @ 3V (Equivalent to

●– 60 MHz @ 5V, 40 MHz @ 3V)

●• Dual Data Pointer

●• On-chip ROM/EPROM (16K-bytes, 32K-bytes, 64K-bytes)

●• On-chip eXpanded RAM (XRAM) (256 or 768 bytes)

●• Programmable Clock Out and Up/Down Timer/Counter 2

●• Programmable Counter Array with

●– High Speed Output,

●– Compare / Capture,

●– Pulse Width Modulator,

●– Watchdog Timer Capabilities

●• Hardware Watchdog Timer (One-time enabled with Reset-Out)

●• 2 extra 8-bit I/O ports available on RD2 with high pin count packages

●• Asynchronous port reset

●• Interrupt Structure with

●– 7 Interrupt sources,

●– 4 level priority interrupt system

●• Full duplex Enhanced UART

●– Framing error detection

●– Automatic address recognition

●• Low EMI (inhibit ALE)

●• Power Control modes

●– Idle mode

●– Power-down mode

●– Power-off Flag

●• Once mode (On-chip Emulation)

●• Power supply: 4.5-5V, 2.7-5.5V

●• Temperature ranges: Commercial (0 to 70oC) and Industrial (-40 to 85oC)

●• Packages: PDIL40, PLCC44, VQFP44 1.4, PLCC68, VQFP64 1.4