TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
High Performance 8-bit Microcontrollers
1. Description
Atmel Wireless & Microcontrollers TS80C51Rx2 is high The fully static design of the TS80C51Rx2 allows to
reduce system power consumption by bringing the clock
frequency down to any value, even DC, without loss of
data.
performance CMOS ROM, OTP, EPROM and ROMless
versions of the 80C51 CMOS single chip 8-bit
microcontroller.
The TS80C51Rx2 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.
The TS80C51Rx2 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 TS80C51Rx2 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.
2. Features
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80C52 Compatible
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Hardware Watchdog Timer (One-time enabled with
Reset-Out)
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8051 pin and instruction compatible
Four 8-bit I/O ports
2 extra 8-bit I/O ports available on RD2 with high
pin count packages
Three 16-bit timer/counters
256 bytes scratchpad RAM
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Asynchronous port reset
Interrupt Structure with
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High-Speed Architecture
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7 Interrupt sources,
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40 MHz @ 5V, 30MHz @ 3V
4 level priority interrupt system
X2 Speed Improvement capability (6 clocks/
machine cycle)
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Full duplex Enhanced UART
30 MHz @ 5V, 20 MHz @ 3V (Equivalent to
60 MHz @ 5V, 40 MHz @ 3V)
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Framing error detection
Automatic address recognition
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Dual Data Pointer
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Low EMI (inhibit ALE)
Power Control modes
On-chip ROM/EPROM (16K-bytes, 32K-bytes, 64K-
bytes)
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Idle mode
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On-chip eXpanded RAM (XRAM) (256 or 768 bytes)
Power-down mode
Power-off Flag
Programmable Clock Out and Up/Down Timer/
Counter 2
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Once mode (On-chip Emulation)
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Programmable Counter Array with
Power supply: 4.5-5V, 2.7-5.5V
Temperature ranges: Commercial (0 to 70oC) and
Industrial (-40 to 85oC)
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High Speed Output,
Compare / Capture,
Pulse Width Modulator,
Watchdog Timer Capabilities
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Packages: PDIL40, PLCC44, VQFP44 1.4, CQPJ44
(window), CDIL40 (window), PLCC68, VQFP64
1.4, JLCC68 (window)
Rev. C - 06 March, 2001
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