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Silicon Labs C8051F9xx MCUs

Silicon Laboratories C8051F9xx Low-Voltage, Low-Power MCUs are capable of operating down to 0.9V. With an integrated DC-DC converter, the devices operate over a 0.9V to 1.8V and 1.8V to 3.6V range, supporting both single- and dual-battery operation. The integrated DC-DC converter can also supply current to external devices, creating an entire solution capable of operating off a single battery. Silicon Laboratories C8051F9xx MCUs come with 64kB of flash and 4kB of RAM in a 4x4mm package.

Features

  • Single-/dual-battery operation with an on-chip DC-DC boost converter
  • High-speed pipelined 8051-compatible microcontroller core (up to 25MIPS)
  • In-system, full-speed, non-intrusive debug interface (on-chip)
  • True 10-bit 300ksps 23-channel single-ended ADC with an analog multiplexer
  • 6-bit programmable current reference
  • Precision programmable 24.5MHz internal oscillator with spread spectrum technology
  • 64kB or 32kB of on-chip flash memory
  • 4352 bytes of on-chip RAM
  • SMBus/I2C, enhanced UART, and two enhanced SPI serial interfaces implemented in hardware
  • 4 general-purpose 16-bit timers
  • Programmable counter/timer array (PCA) with 6 capture/compare modules and watchdog timer function
  • On-chip power-on reset, VDD monitor, and temperature sensor
  • 2 on-chip voltage comparators with 23 touch-sense inputs
  • 24 or 16 ports I/O (5V tolerant)

Applications

  • Portable personal medical products
  • Remote controls
  • Portable audio
  • Consumer electronics
  • Wireless sensors and security
  • Wireless meter reading
  • Industrial monitoring and control

Block Diagram

Block Diagram - Silicon Labs C8051F9xx MCUs
Published: 2008-02-26 | Updated: 2025-10-23