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Cost-Competitive Automotive Microcontrollers

Aug. 13, 2014
STMicroelectronics has expanded its 8-bit automotive-grade microcontroller portfolio by adding ultra-competitively priced new devices in compact packages, featuring 20 MIPS processing performance and a peripheral set optimized for automotive body electronics and comfort applications.

STMicroelectronics has expanded its 8-bit automotive-grade microcontroller portfolio by adding ultra-competitively priced new devices in compact packages, featuring 20 MIPS processing performance and a peripheral set optimized for automotive body electronics and comfort applications.

Based on ST's efficient 24MHz STM8A 8-bit processor core, the new STM8AF6223and STM8AF6226 feature an intelligent mix of connectivity, timing, and analog functions for space-constrained modules such as seat controllers, window lifters, HVAC controls or gateways. An extended temperature range qualifies the MCUs for under-the-hood applications.

Features comprise 8Kbytes on-chip Flash, 640 Bytes true data EEPROM (up to 300kcycles), 1Kbyte RAM, serial interfaces including LIN 2.1, and a 10-bit ADC. A clock security system, two watchdogs (one with independent clock), and a sophisticated memory-protection scheme ensure automotive-level dependability.

Combining the simplicity and robustness of a 5V 8-bit architecture with automotive reliability, the AEC-Q100 qualified devices operate at temperatures up to 150°C and keep running down to 3.0V in cranking conditions.

A choice of compact packages is available. Even the smallest, the TSSOP20, has seven ADC inputs, and six capture/compare channels. The TQFP32 adds three complementary PWM outputs for driving BLDC motors.

The STM8AF6223 and STM8AF6226 microcontrollers are available immediately. The STM8AF6223 in TSSOP20 with 85°C maximum temperature is priced at $0.63 in quantities of 10,000 units.

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