TS87C51RB2

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, 64Kbytes)
· 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, CQPJ44
(window), CDIL40 (window), PLCC68, VQFP64
1.4, JLCC68 (window)


Pinout



Description

Atmel Wireless & Microcontrollers TS87C51RB2  is high performance CMOS ROM, OTP, EPROM and ROMless versions of the 80C51 CMOS single chip 8-bit microcontroller. The TS87C51RB2  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.
In addition, the TS87C51RB2  has a Programmable Counter Array, an XRAM of 256 or 768 bytes, a
Hardware Watchdog Timer, a more versatile serial channel that facilitates multiprocessor communication (EUART) and a X2 speed improvement mechanism. The fully static design of the TS87C51RB2  allows to reduce system power consumption by bringing the clock frequency down to any value, even DC, without loss of data.The TS87C51RB2  has 2 software-selectable modes of
reduced activity for further reduction in power consumption. In the idle mode the CPU is frozen while the timers, the serial port and the interrupt system are still operating. In the power-down mode the RAM is saved and all other functions are inoperative.