TSC80251G2D
3. Features
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Pin and Software Compatibility with Standard 80C51
Products and 80C51Fx/Rx/Rx+
Plug-In Replacement of Intel’s 8xC251Sx
C251 core: Intel’s MCS
®
251 D-step Compliance
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40-byte register file
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Registers accessible as Bytes, Words or Dwords
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Three-stage instruction pipeline
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16-bit internal code fetch
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16-bit watchdog timer/counter capability
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Secure 14-bit Hardware Watchdog Timer
Power Management
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Power-On reset (integrated on the chip)
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Power-Off flag (cold and warm resets)
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Software programmable system clock
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Idle mode
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Power-Down mode
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Enriched C51 Instruction Set
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16-bit and 32-bit ALU
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Compare and conditional jump instructions
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Expanded set of move instructions
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Keyboard Interrupt Interface on Port 1
Non Maskable Interrupt Input (NMI)
Real-Time Wait States Inputs (WAIT#/AWAIT#)
ONCE mode and full speed Real-Time In-Circuit
Emulation support (Third Party Vendors)
High Speed Versions:
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4.5 to 5.5 V
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16 MHz and 24 MHz
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Typical operating current: 35 mA @ 24 MHz
24 mA @ 16 MHz
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Typical power-down current: 2
µA
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Linear Addressing
1 Kbyte of On-Chip RAM
External Memory Space (Code/Data) Programmable
from 64 Kbytes to 256 Kbytes
TSC87251G2D: 32 Kbytes of On-Chip EPROM/
OTPROM
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SINGLE PULSE Programming Algorithm
TSC83251G2D: 32 Kbytes of On-Chip Masked ROM
TSC80251G2D: ROMless Version
Four 8-bit Parallel I/O Ports (Ports 0, 1, 2 and 3 of
the standard 80C51)
Serial I/O Port: full duplex UART (80C51
compatible) with independent Baud Rate Generator
SSLC: Synchronous Serial Link Controller
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I
2
C multi-master protocol
• µWire
and SPI master and slave protocols
Three 16-bit Timers/Counters (Timers 0, 1 and 2 of
the standard 80C51)
EWC: Event and Waveform Controller
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Compatible with Intel’s Programmable Counter
Array (PCA)
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Common 16-bit timer/counter reference with four
possible clock sources (Fosc/4, Fosc/12, Timer 1
and external input)
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Five modules, each with four programmable
modes:
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16-bit software timer/counter
16-bit timer/counter capture input and
software pulse measurement
High-speed output and 16-bit software pulse
width modulation (PWM)
8-bit hardware PWM without overhead
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Low Voltage Version:
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2.7 to 5.5 V
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16 MHz
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Typical operating current: 11 mA @ 3V
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Typical power-down current: 1
µA
Temperature Ranges:
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Commercial (0°C to +70°C)
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Industrial (-40°C to +85°C)
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Option: extended range (-55°C to +125°C)
Packages:
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PDIL 40, PLCC 44 and VQFP 44
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CDIL 40 and CQPJ 44 with window
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Options: known good dice and ceramic packages
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2
Rev. A - May 7, 1999
TEMIC [ TEMIC SEMICONDUCTORS ]
