TK89C668 Microcontroller, 64K Flash, 8K RAM

General Description

The TK89C668 is based on the 8051- microcontroller architecture. With 64Kx8 of Flash memory and 8Kx8 of internal RAM, these parts are a pin-for-pin replacement for existing NXP P89C668 microcontroller.

The TK89C668 contains four 8-bit bidirectional parallel ports, two external interrupt sources, three timer/counters, a serial port with a hardware interrupt capability and a frame error detect flag, power management, a programmable counter array (PCA), TWI Serial Interface, and enhanced data security features. These peripherals are supported by a multiple source, four level interrupt capability. The core processor contains 256 bytes of scratchpad RAM and 64KB of program storage. The core also contains 7936 bytes of Extended RAM.

The TWI (Two Wire Interface) is fully implemented in hardware. This allows byte level transfers, resulting in simpler software overhead.

Features

8 Bit Microcontroller with 8051 architecture
Fully static design
64KB internal Flash
8KB internal RAM
In – Application Programming (IAP)
In – System Programming (ISP)
Low Standby Current At Full Supply Voltage
0-33 MHz Operation (12 clock mode)
4 8-Bit Bidirectional Ports
Boolean Processor
44 pin PLCC Package
Built In Power Management
Three 16 bit timer/counters
Full Duplex Serial Channel With Hardware Address Decode
Multiple Source, Four Level Interrupt Capability
Programmable Counter Array
Watchdog Timer For Greater System Reliability
Dual Data Pointers
Program Security Features
6 – clock / 12 clock select
TWI Serial Interface

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Documentation

The data sheet is available here: TK89C668

Programming

The data sheet is available here: TK89C668 Programming Information

Product Change Notice Form: PCN 20011

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Microprocessors

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Tekmos, Inc.
14121 Highway 290 West
Building #15
Austin, TX 78737
Phone: (512) 342-9871