Silicon Labs C8051F50x Automotive MCUs

Silicon Laboratories Inc. (NASDAQ: SLAB) recently introduced the C8051F50x family of mixed-signal MCUs. The C8051F50x is the first to integrate an ultra high-performance internal precision oscillator to support both CAN and LIN communication networks without an external crystal or resonator. Silicon Labs’ highly-integrated, mixed-signal MCUs are ideal for applications where end-product size is critical such as window lifters, seat positioning and steering angle sensing. All members of the C8051F50x family are available now in 32-pin and 48-pin QFN and QFP packages, and pricing begins at $1.87 in 10,000 piece quantities.

C8051F50x Features

  • 50 MIPS 8051 CPU
  • 64 or 32 kB Flash memory
  • 4 kB RAM
  • 24 MHz on-board oscillator (±0.5%) with clock multiplier
  • 12-bit, 200 ksps ADC, ±1LSB INL
  • Up to 32 analog inputs
  • Up to 40 digital I/O
  • CAN 2.0 B, LIN 2.0
  • UART, SPI, I²C
  • PWM, Timers
  • 1.8 to 5.25 V input supply
  • –40 to 125 ºC operating range
  • Two on-chip comparator and temperature sensor
  • Packages: 48-Pin QFP/QFN and 32-Pin QFP/QFN
Silicon Labs C8051F50x Automotive Microcontroller

The C8051F50x family provides the highest functional density for automotive applications by integrating a 50 MIPS core, up to 64 kB of high-endurance Flash, four kB of RAM, 32-message buffer CAN 2.0B hardware controller and a hardware LIN 2.0 controller in a 5 x 5 mm2 package, providing customers with the memory and computational resources for real-time applications requiring CAN and LIN software stacks. The 50-MHz instruction clock provides up to five times better 8-bit CPU throughput than the competition, offering 16-bit class performance at a lower system cost. The internal precision oscillator provides an accuracy of ±0.5 percent across the entire temperature (-40 to +125 ºC) and voltage (1.8 to 5.25 V) range, insuring the four-corner operation that Silicon Labs’ customers have come to expect.

The integrated 12-bit, 200 ksps, 32-channel analog to digital converter (ADC) has the highest signal-to-noise ratio (SNR) than any other integrated MCU device in this space, offering higher precision and accuracy when simultaneous analog and digital processing is required. Analog performance is further enhanced through the inclusion of a precision voltage reference, typically not found on integrated solutions. The programmable comparator can be dynamically re-mapped to different I/O pins during run-time providing a simple but powerful solution for motor commutation. In addition, the integrated temperature sensor provides an internal mechanism for diagnostics and system calibration.

More info: Silicon Laboratories