C8051F39x Small Form Factor MCUs

The C8051F39x family is the next generation of Silicon Labs’ best-selling C8051F33x mixed-signal microcontrollers (MCUs). These MCUs range in flash size from 4-16 kB and are footprint and code compatible with the field-proven C8051F33x devices while offering faster speed/performance, more RAM, extra features and an extended temperature range.

With on-chip Power-On Reset, VDD monitor, Watchdog Timer, and a clock oscillator, the C8051F37x/39x devices are truly stand-alone system-on-a-chip solutions. The Flash memory can be reprogrammed even in-circuit, providing non-volatile data storage, and also allowing field upgrades of the 8051 firmware. User software has complete control of all peripherals, and may individually shut down any or all peripherals for power savings.

DAC resolution
10-bit
Packages as small as
4x4 mm

C8051F39x Common Specs

  • 50 MIPS throughput (peak)
  • 1 kB of RAM (256 internal bytes and 768 XRAM bytes)
  • 512 byte EEPROM (F37x only)
  • Up to 16 kB flash
  • Up to 21 GPIOs
  • 10-bit, 500 ksps ADC
  • 2 x 10-bit current mode DAC
  • Calibrated internal 49 MHz oscillator
  • Internal 80 kHz oscillator
  • Two SMBus/I²C
  • Enhanced SPI, Enhanced UART
  • Six timers
  • Three programmable counter array channels
  • Analog comparator
  • -40 to 105 °C temperature range (F39x only)
  • Lead-free / RoHS compliant
Status
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Part Number MCU Core MHz Flash (kB) RAM (kB) Dig I/O Pins 5 Volt Tolerant ADC 1 USB Temp Sensor Timers (16-bit) PCA Channels ADC 2 DAC Comparators UART SPI I2C HS I2C Slave I2S EMIF CAN LIN AES AEC-Q100 Vdd (min) Vdd (max) Package Type Package Size (mm) Internal Osc. VREF Debug Interface Other
8051 50 16 1 21 10-bit, 16-ch., 500 ksps 6 3 10-bit, 2-ch. 1 1 1 2 0 0 0 0 0 1.8 3.6 QFN24 4x4 ±2 C2
8051 50 16 1 21 6 3 1 1 1 2 0 0 0 0 0 1.8 3.6 QFN24 4x4 ±2 C2
8051 50 16 1 17 10-bit, 16-ch., 500 ksps 6 3 10-bit, 2-ch. 1 1 1 2 0 0 0 0 0 1.8 3.6 QFN20 4x4 ±2 C2
8051 50 16 1 17 6 3 1 1 1 2 0 0 0 0 0 1.8 3.6 QFN20 4x4 ±2 C2
8051 50 8 1 21 10-bit, 16-ch., 500 ksps 6 3 10-bit, 2-ch. 1 1 1 2 0 0 0 0 0 1.8 3.6 QFN24 4x4 ±2 C2
8051 50 8 1 21 6 3 1 1 1 2 0 0 0 0 0 1.8 3.6 QFN24 4x4 ±2 C2
8051 50 8 1 17 10-bit, 16-ch., 500 ksps 6 3 10-bit, 2-ch. 1 1 1 2 0 0 0 0 0 1.8 3.6 QFN20 4x4 ±2 C2
8051 50 8 1 17 6 3 1 1 1 2 0 0 0 0 0 1.8 3.6 QFN20 4x4 ±2 C2
8051 50 4 1 17 10-bit, 16-ch., 500 ksps 6 3 10-bit, 2-ch. 1 1 1 2 0 0 0 0 0 1.8 3.6 QFN20 4x4 ±2 C2
8051 50 4 1 17 6 3 1 1 1 2 0 0 0 0 0 1.8 3.6 QFN20 4x4 ±2 C2

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