Embedded System Product News

Silicon Labs C8051F37x/C8051F39x 8-bit Microcontrollers have EEPROM and Really High Resolution Analog

By Bill Giovino
Aug 29, 2012 - 2:12:27 PM

WARNING: This is a dangerously accurate 8051 microcontroller. For Adults Only.

Silicon Laboratories Inc. today introduced a new family of high-performance 8-bit microcontrollers that feature a high accuracy on-chip temperature sensor which does not require calibration. The main device family is the Silicon Labs C8051F39x. The Silicon Labs C8051F37x contains 512Bytes of EEPROM.

Silicon Labs is a leader in providing microcontrollers that have high accuracy no-compromise analog peripherals. The Silicon Labs C8051F39x/C8051F37x on-chip temperature sensor provides ±2 °C accuracy up to 105°C without any need for calibration.

Silicon Labs C8051F39x/C8051F37x Block Diagram
Silicon Labs C8051F39x/C8051F37x Block Diagram
Silicon Labs C8051F37x/C8051F39x Features
Features of the new Silicon Labs C8051F39x and C8051F37x microcontrollers include:

  • Next Generation pipelined 8051 Core at 50MHz internal clock
     Two-byte Prefetch Engine
  • Cyclic Redundancy Check (CRC) Unit
  • Vcc: 1.8V to 3.6V
  • Draws 7mA at 50MHz internal clock
  • 200nA STOP Mode
  • Built-in supply voltage monitor
  • Internal 49MHz ±2% oscillator
  • Internal 80kHz oscillator
  • On-the-fly clock source switching
  • Up to 16K Bytes Flash with 50MHz internal access
  • Up to 1K Byte RAM
  • 512 Byte Data EEPROM with 1 Million R/W cycles (C8051F37x only)
     EEPROM is externally addressable via I2C
  • Expanded Interrupt handler
  • Six 16-bit Timers
  • 16-bit programmable Counter Array (PCA) with three CAPCOM and PWM
  • Precision factory-calibrated Temperature Sensor @ ±2 °C accuracy up to 105°C
  • 20-channel 10-bit ADC ±1 LSB accuracy and 500 ksps
  • Two-channel 10-bit DAC ±1 LSB accuracy
  • UART (crystal-less UART operation supported)
  • 2 SMBus (I2C compatible) interfaces
  • SPI
  • Comparator with programmable hysteresis
  • Up to 21 I/O pins
  • TA = -40 to +105 °C (C8051F39x),
    TA = -40 to +85 °C (C8051F37x)
  • 2-pin non-intrusive debug
     Supports Single-step, breakpoints, modify memory
  • QFN24 and QFN20 packages

These Silicon labs microcontrollers are based on a patented, pipelined next-generation 8051 core that provides 2.5x faster CPU performance (up to 50 MIPS) than competing devices. In addition, these microcontrollers use an innovative crossbar technology that allows more flexibility in assigning peripherals to different pin locations, easing PC board layout and preventing pin conflicts.

The Silicon Labs C8051F39x/C8051F37x microcontrollers consume a low 160 µA/MHz in active mode.

"The new C8051F39x/7x MCUs leverage our mixed-signal capabilities to provide enhanced on-chip analog peripherals such as our high-precision temperature sensor without compromising product cost, performance or size," said Mike Salas, VP and GM of Silicon Labs' Microcontroller Products. "Our customers are faced with the need to pack more functionality in smaller footprints, and we excel at architecting MCUs that deliver the utmost in computational throughput, integration, power efficiency and analog performance."

C8051F39x/C8051F37x Development Tools
Silicon Labs' development kits for the C8051F39x/C8051F37x microcontroller family include C8051F390 and C8051F370 target boards, USB debug adaptors and programmers, and a free C software development suite. The Silicon Labs' TOOLSTICK370-A-DC daughter card provides a cost-effective, development system that supports developing and debugging application firmware directly on the target microcontroller.

Pricing and Availability
"Production quantities of Silicon Labs' C8051F39x/7x MCUs are available now in 4 mm x 4 mm 20-pin and 24-pin QFN packages with 4 to 16 KB flash sizes, as well as 1 KB RAM. The F39x/7x devices are footprint and code compatible with Silicon Labs' C8051F33x MCUs. Product pricing for the C8051F39x/7x family in 10,000-unit quantities begins at $0.98 (USD). The C8051F390-A-DK and C8051F370-A-DK development kits are available for $69.00 (USD MSRP). The TOOLSTICK370-A-DC is available for $9.90 (USD MSRP)."

Silicon Laboratories Inc.
"Silicon Laboratories is an industry leader in the innovation of high-performance, analog-intensive, mixed-signal ICs. Developed by a world-class engineering team with unsurpassed expertise in mixed-signal design, Silicon Labs' diverse portfolio of patented semiconductor solutions offers customers significant advantages in performance, size and power consumption."


Silicon Labs C8051F37x/C8051F39x 8-bit Microcontrollers have EEPROM and Really High Resolution Analog

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