Flash 8-bit MCUs for cost-sensitive applications

11 April 2001 Computer/Embedded Technology

Motorola claims its 68HC908JL and JK families of in-system programmable flash microcontrollers (MCUs) allow design engineers to benefit from cost-effective and flexible 20 and 28-pin flash MCU solutions in systems where only hardwired or electromechanical devices were previously affordable.

Based on the 68HC08 architecture, the 68HC908JL and JK family of solutions includes enhanced flash to directly minimise production programming costs while increasing flexibility in field reprogrammability - it programs 64 bytes in only 2 ms. The enhanced flash has write/erase cycling of up to 10 000 cycles over operating temperature, allowing customers to use the flash for data storage, eliminating the cost of separate data EEPROMs.

In-application reprogrammability of the JK and JL microcontrollers provides flexibility with either 1,5K or 4 KB of flash, eliminating sockets and costly field recalls when new application code is required. A 12-channel ADC and a multi-trip point low voltage inhibit (LVI) are integrated for reduced system cost in common analog applications. Customers can choose between RC or crystal oscillators to best optimise cost vs clock accuracy. Direct LED drives further reduce system cost by integrating high current I/O.

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avnet.co.za

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