C8051F31x Small Form Factor Microcontrollers

The C8051F31x small MCU devices are available in 24-pin, 28-pin and 32-pin packages and include 16 kB flash with 10-bit ADC. A pin-for-pin compatible One-time Programmable (OTP) EEPROM version is also available (C8051T61x).
With on-chip Power-On Reset, VDD monitor, Watchdog Timer and clock oscillator, the C8051F31x 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.
 
 

Features

  • 25 MIPS 8051 CPU
  • 16 kB Flash (F310/11/16/17 only)
  • 8 kB Flash (F312/13/14/15 only)
  • 1280 B RAM
  • 10-bit, 200 ksps, 25-ch. ADC (F310/11/12/13/16)
  • 29/25/21 digital I/O, 5 V tolerant
  • 2.7 to 3.6 V supply
  • –40 to +85 °C operating temperature
 
 

Applications

Documentation

Expand AllCollapse All

Data Sheet (1)

DescriptionVersionUpdatedSize
C8051F31x 8 kB and 16 kB ISP Flash MCU Family
1.7

Data Short (8)

DescriptionVersionUpdatedSize
C8051F310 Data Short
6.15.2004
C8051F311 Data Short
1.10.20111/13/2011
C8051F312 Data Short
8.26.2004
C8051F313 Data Short
5.5.2005
C8051F314 Data Short
8.26.2004
C8051F315 Data Short
5.5.2005
C8051F316 Data Short
9.14.2005
C8051F317 Data Short
9.14.2005

User Guides (9)

Quick Start Guide (2)

Application Notes (31)

DescriptionVersionUpdatedSize
AN0822: Simplicity Studio User's Guide
0.12/12/2014
AN101: Configuring the Port I/O Crossbar Decoder
2.27/19/2013
AN103: Using the On-Chip Temperature Sensor
1.37/19/2013
AN104: Integrating Keil 8051 Tools into the IDE
3.06/18/2013
AN107: Implementing 16-bit PWM Using the PCA
1.1
AN111: Using the C8051Fxxx in 5 Volt Systems
1.37/20/2013
AN114: Hand Soldering Tutorial for Fine Pitch QFP Devices
1.1
AN117: Using the C8051Fxxx On-Chip Interface Utilities DLL
3.37/19/2013
AN119: Calculating Settling Time for Switched Capacitor ADCs
1.27/19/2013
AN124: Pin Sharing Techniques for the C2 Interface
1.27/19/2013
AN125: Integrating Raisonance 8051 Tools into the IDE
1.3
AN126: Integrating Tasking 8051 Tools into the Silicon Labs IDE
2.4
AN127: FLASH Programming via the C2 Interface
1.21/15/2013
AN136: Production Programming Options for MCU Devices
1.37/19/2013
AN138: Power Management Techniques for the 'F30x and 'F31x
1.1
AN140: Integrating HI-TECH 8051 Tools into the IDE
1.3
AN141: SMBus Communication for Small Form Factor Device Families
1.37/19/2013
AN148: Magnetic Stripe Reader
1.38/12/2008
AN191: Motor Control Software Examples
1.17/19/2013
AN198: Integrating SDCC 8051 Tools into the Silicon Labs IDE
0.2
AN201: Writing to Flash from Firmware
0.77/19/2013
AN203: C8051Fxxx Printed Circuit Board Design Notes
0.27/19/2013
AN208: Sensorless Brushless DC Motor Reference Design
0.2
AN236: Integrating IAR 8051 Tools into the Silicon Laboratories IDE
0.3
AN324: Advanced Encryption Standard
0.1
AN330: Differences between the C8051F310 and the C8051T61x Device Family
0.1
AN533: Modular Bootloader Framework for Silicon Labs C8051Fxxx Microcontrollers
0.112/3/2010
AN568: EEPROM Emulations for Flash Microcontrollers
0.11/5/2011
AN767: SMBus Bootloader
0.14/24/2013
AN778: UART Bootloader
0.16/18/2013
AN798: EEPROM Emulation with Wear-Leveling for 8-Bit Flash MCUs
0.110/21/2013

White Papers (6)

Miscellaneous (1)

DescriptionVersionUpdatedSize
C2 Specification
1.1

PCN (7)

Development Kits

 

One Click Access to the Latest Software, Documentation & Tools

 Simplicity Studio
One-click accessibility Simplicity Studio gives you instant access to tools, relevant documentation, software and source code libraries
Always updated Simplicity Studio automatically keeps you up-to-date with all changes affecting your development environment
World-class simplicity Simplicity Studio includes a product selector to help you speed up the MCU selection process
 

Design Tools

Expand AllCollapse All

Software (43)

DescriptionVersionUpdatedSize
Interfacing an External SRAM to the C8051Fxxx
16-bit PWM using an on-chip timer
8 Bits Tools Installer
4.907/23/2014
Advanced encryption standard
AN767SW: SMBus Bootloader Software
4/25/2013
AN778 Software
6/21/2013
CapTouchSense game
Configuration Wizard 2 Installer
4.4012/11/2013
Configuring the internal and external oscillators
Configuring the Port I/O Crossbar Decoder
Differences between the C8051F310 and the C8051T61x Device Family
EEPROM emulation for flash microcontrollers
F850_BLDC_RD software
1.0.0.010/18/2013
Flash programming via the C2 interface
FLASHUtil Installer
4.407/23/2014
Hex to Svf conversion utility software
V 1.317/17/2012
IDE Installer
4.907/23/2014
Implementing 16-bit PWM using the PCA
Implementing a real-time clock
Improving ADC resolution by oversampling and averaging
Integrating Hi-Tech 8051 tools into the Silicon Labs IDE
Integrating IAR 8051 Tools into the Silicon Laboratories IDE
1.1
Integrating IAR 8051 tools into the Silicon Labs IDE
Integrating SDCC 8051 tools into the Silicon Labs IDE
Integrating Tasking 8051 tools into the Silicon Labs IDE
IR Performance Analysis Tool
Low Pin-Count LCD Interface Software
Modular bootloader framework for Silicon Labs MCUs
Motor control software examples
Power management techniques for the F30x and F31x
Production Programmer
3.207/23/2014
Simplicity Studio v2
v210/23/2014
Simplicity Studio v2, Linux Installer
v210/23/2014
Simplicity Studio v2, Mac Installer
v210/23/2014
Simplicity Studio v2, Offline Installer
v210/23/2014
SMBus communication for small form factor devices
Software UART examples
Three-Channel Power Sequencer.
ToolStick Development Tools
2.60.18/2/2013
USB Debug Adapter Reset Utility
1.76/1/2013
Using the on-chip temperature sensor
uVision Driver
4.107/23/2014
Writing to flash from firmware

Schematics/Layout (10)

Training (2)

Product Matrix
Zoom
Part NumberMCU CoreMHzFlashRAMDig I/O PinsTimers (16-bit)PCA ChannelsInternal Osc.ADC 1ADC 2DACTemp SensorVREFComparatorsDebug InterfaceOtherPackage TypePackage SizeAlternativeDev KitAEC-Q100CommunicationsFootnotes
C8051F31080512516 kB1.252945±2%10-bit, 21-ch., 200 kspsYesNo2C2LQFP329x9 mmT610C8051F310DK
NoI2C; SPI; UART
C8051F31180512516 kB1.252545±2%10-bit, 17-ch., 200 kspsYesNo2C2QFN285x5 mmT611C8051F310DK
NoI2C; SPI; UART
C8051F3128051258 kB1.252945±2%10-bit, 21-ch., 200 kspsYesNo2C2LQFP329x9 mmT612C8051F310DK
NoI2C; SPI; UART
C8051F3138051258 kB1.252545±2%10-bit, 17-ch., 200 kspsYesNo2C2QFN285x5 mmT613C8051F310DK
NoI2C; SPI; UART
C8051F3148051258 kB1.252945±2%NoNo2C2LQFP329x9 mmT614C8051F310DK
NoI2C; SPI; UART
C8051F3158051258 kB1.252545±2%NoNo2C2QFN285x5 mmT615C8051F310DK
NoI2C; SPI; UART
C8051F31680512516 kB1.252145±2%10-bit, 13-ch.,200 kspsYesNo2C2QFN244x4 mmT616C8051F310DK
NoI2C; SPI; UART
C8051F31780512516 kB1.252145±2%NoNo2C2QFN244x4 mmT617C8051F310DK
NoI2C; SPI; UART
    The on-chip Silicon Labs 2-Wire (C2) Development Interface allows non-intrusive (uses no on-chip resources), full speed, in-circuit debugging using the production MCU installed in the final application. This debug logic supports inspection and modification of memory and registers, setting breakpoints, single stepping and run and halt commands. All analog and digital peripherals are fully functional while debugging using C2. The two C2 interface pins can be shared with user functions, allowing in-system programming and debugging without occupying package pins.
    Each device is specified for 2.7 to 3.6 V operation over the industrial temperature range (–45 to +85 °C). The Port I/O and RST pins are tolerant of input signals up to 5 V. The C8051F31x devices are available in 32-pin LQFP, 28-pin QFN and 24-pin QFN packages.
    ​​​​

    Overview

    Product Matrix

    Documentation

    Tools

    Education

    Technology

    More Info