The C8051F37x/39x is the next-generation precision mixed-signal MCU from Silicon Labs. Compared to other solutions, the MCU takes up more than 30% of the space, improves performance by 2.5 times, and saves 80% of power consumption. As a high-performance 8-bit precision mixed-signal MCU, the C8051F37x/39x uses a patented pipelined architecture 8051 core, which is 2.5 times the CPU performance of other similar products. The system clock clock speed is up to 50 MIPS. At the same time, its power consumption in operating mode is only 160μA/MHz, which saves 80% of power consumption compared with similar products. In addition, the series offers temperature sensors with an accuracy of ±2°C over a wide temperature range (up to 105°C) without calibration. Its accuracy is five times higher than other similar products, and higher reliability can be achieved by improving the temperature compensation process. The C8051F37x/39x series MCUs are available in a QFN package measuring only 4mm & TImes; 4mm, which is 30% smaller than other solutions. At the same time, on-chip integrated crystal oscillator, 4-16KB flash, 10-bit AD and DA, watchdog timer, VDD monitor make C8051F37x/39x a truly independent system-on-chip solution. This MCU provides an excellent solution for optical transmission modules, sensing interfaces and brushless DC motors. C8051F37x/C8051F39x Features: • System clock: 50MIPS • RAM 1kB • EEPROM: 512B (C8051F37x) • FLASH: 4-16KB optional • On-chip ADC: 10-bit 500ksps • On-chip DAC: 10-bit current mode & TImes; 2 • Number of GPIOs: 21/17 • Two SMBus/I2C, UART, SPI • Have an analog comparator • Internal 80kHz oscillator • Three channel programmable counter array channels Typical application of C8051F37x/C8051F39x: • Optical transmission module • Lighting system • Sensor interface • Healthcare equipment • Brushless DC motor applications: electric fans, dryers, vacuum cleaners, remote control toy cars, etc.
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Figure 1: C8051F37x/39x physical map 
September 26, 2021