ST upgrades 8bit MCUs with 20MIPS processing
STMicroelectronics has launched an addition to its 8bit automotive-grade microcontroller family, showcasing devices with 20MIPS processing performance in compact packages.
Based on the company's 24MHz STM8A 8bit processor core, the STM8AF6223 and STM8AF6226 feature a mix of connectivity, timing, and analogue 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.
The MCUs integrate an 8KB on-chip flash, 640B true data EEPROM that run up to 300kcycles, 1KB RAM, serial interfaces including LIN 2.1, and a 10bit ADC. Other features include clock security system, two watchdogs, and a memory-protection scheme.
The devices are AEC-Q100 qualified, and operate at temperatures up to 150°C and keep running down to 3.0V in cranking conditions. They are available in compact packages—the TSSOP20, which has seven ADC inputs, and six capture/compare channels; and the TQFP32, adding three complementary PWM outputs for driving BLDC motors.
Figure 1: The MCUs are available in—32pin, low-profile, quad flat LQFP package; and 20pin, 4.40mm body, 0.65mm pitch TSSOP package.
Figure 2: Block diagram.
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