C8051F31x Small Form Factor MCUs

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C8051F31x Small Form Factor MCU Block Diagram

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.

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.

More information about our pipelined 8051 Microcontroller core

 

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

  • Optical communications (XFP/SFP)
  • Consumer products
  • Battery chargers and fuel gauges
  • Electronic toys and games
  • Wireless devices
  • Automotive controls
  • Brushless DC and stepper motor controls
  • Touch sense panels/switches
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Documentation    Expand All   Collapse All

 
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Data Sheet (1)

Document NameDescriptionVersionLast Updated
C8051F31x.pdf
C8051F31x Data Sheet1.7

Data Short (8)

Document NameDescriptionVersionLast Updated
C8051F310_short.pdf
C8051F310 Data Short6.15.2004
C8051F311_short.pdf
C8051F311 Data Short1.10.20111/13/2011
C8051F312_short.pdf
C8051F312 Data Short8.26.2004
C8051F313_short.pdf
C8051F313 Data Short5.5.2005
C8051F314_short.pdf
C8051F314 Data Short8.26.2004
C8051F315_short.pdf
C8051F315 Data Short5.5.2005
C8051F316_short.pdf
C8051F316 Data Short9.14.2005
C8051F317_short.pdf
C8051F317 Data Short9.14.2005

User Guides (7)

Document NameDescriptionVersionLast Updated
C8051F31x-DK.pdf
C8051F31x-DK User Guide0.6
Serial_Debug_Adapter_UG.pdf
RS232 Serial Adapter (EC2) User Guide0.1
Sensorless_BLDC_Motor-RD.pdf
Sensorless BLDC Motor Reference Design0.3
ToolStick_F311DC_UG.pdf
ToolStick C8051F311 Daughter Card User Guide0.1
ToolStick_Debug_Adapter_UG.pdf
ToolStick Debug Adapter User Guide0.1
ToolStick_Programming_Adapter_UG.pdf
Toolstick Programming Adapter User Guide0.39/15/2008
USB_Debug_Adapter_UG.pdf
USB Debug Adapter User Guide0.1

Application Notes (28)

Document NameDescriptionVersionLast Updated
an101.pdf
AN101: Configuring the Port I/O Crossbar Decoder2.1
an103.pdf
AN103: Using the On-Chip Temperature Sensor1.2
an104.pdf
AN104: Integrating Keil 8051 Tools into the IDE2.91/5/2011
an107.pdf
AN107: Implementing 16-bit PWM Using the PCA1.1
an111.pdf
AN111: Using the C8051Fxxx in 5 Volt Systems1.27/1/2008
an114.pdf
AN114: Hand Soldering Tutorial for Fine Pitch QFP Devices1.1
an117.pdf
AN117: Using the C8051Fxxx On-Chip Interface Utilities DLL3.27/29/2008
an119.pdf
AN119: Calculating Settling Time for Switched Capacitor ADCs1.1
an124.pdf
AN124: Pin Sharing Techniques for the C2 Interface1.1
an125.pdf
AN125: Integrating Raisonance 8051 Tools into the IDE1.3
an126.pdf
AN126: Integrating Tasking 8051 Tools into the Silicon Labs IDE2.4
an127.pdf
AN127: FLASH Programming via the C2 Interface1.1
an136.pdf
AN136: Production Programming Options for MCU Devices1.28/14/2008
an138.pdf
AN138: Power Management Techniques for the 'F30x and 'F31x1.1
an140.pdf
AN140: Integrating HI-TECH 8051 Tools into the IDE1.3
an141.pdf
AN141: SMBus Communication for Small Form Factor Device Families1.2
An191.pdf
AN191: Motor Control Software Examples1.0
an198.pdf
AN198: Integrating SDCC 8051 Tools into the Silicon Labs IDE0.2
an201.pdf
AN201: Writing to Flash from Firmware0.4
AN203.pdf
AN203: C8051Fxxx Printed Circuit Board Design Notes0.1
AN208.pdf
AN208: Sensorless Brushless DC Motor Reference Design0.2
an236.pdf
AN236: Integrating IAR 8051 Tools into the Silicon Laboratories IDE0.3
AN330.pdf
AN330: Differences between the C8051F310 and the C8051T61x Device Family0.1
an333.pdf
AN333: ToolStick Virtual Tools User's Guide0.1
an354.pdf
AN354: AB0 Prototyping Board User's GuideRev 0.111/7/2008
AN520.pdf
AN520: CMOS Advanced Galvanic Isolators for Medical Electronics0.16/17/2010
AN533.pdf
AN533: Modular Bootloader Framework for Silicon Labs C8051Fxxx Microcontrollers0.112/3/2010
AN568.pdf
AN568: EEPROM Emulations for Flash Microcontrollers0.11/5/2011

White Papers (2)

Document NameDescriptionVersionLast Updated
CIP-51.pdf
CIP-51 Performance for Standard Library Math Routines2.1
Using-Low-Cost-OTP-Microcontrollers-to-Simplify-Embedded-Applications.pdf
Using Low-Cost OTP Microcontrollers to Simplify Embedded Applications

Miscellaneous (3)

Document NameDescriptionVersionLast Updated
C2spec.pdf
C2 Specification1.1
MCU_QS_Guide_USB.pdf
MCU Quick-Start Guide Featuring the USB Debug Adapter0.5
Sensorless_BLDC_Motor-RD_qs_guide.pdf
Sensorless BLDC Motor-RD Quick-Start Guide0.2

PCN (6)

Document NameDescriptionVersionLast Updated
1110051 C-Pak as a Tape and Reel Supplier std.pdf
1110051 C-Pak as a Tape and Reel Supplier std
1002101-MCU_32LQFP_14SOIC_Family_Test_Site_Expand_ASECL_Std.pdf
MCU 32LQFP/14SOIC Family Test Site Expand ASECL Std
1004221A.pdf
MCU DFN/QFN/TQFN/TQFP Pkg Test Site Expand-ASECL Grp1of2 Std
1005191A.pdf
MCU DFN/QFN/TQFN/TQFP Pkg Test Site Expand-ASECL, Grp2of2 Std
1005191.pdf
MCU DFN/QFN/TQFN/TQFP Pkg Test Site Expand-ASECL, Grp2of2, Std
1011021.pdf
MCU Fab(TSMC) & Assy(ASECL)Site Expansion Std
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Development Kits

 

Design Tools    Expand All   Collapse All

 
 Get notified when these files are updated.

Software (40)

Document NameDescriptionVersionUpdated
an106sw.zip
Interfacing an External SRAM to the C8051Fxxx
an110sw.zip
16-bit PWM using an on-chip timer
an324sw.zip
Advanced encryption standard
an534sw.zip
CAN BOOTLOADER
CAN_OBD_DC_Setup.zip
CAN OBD Reader Reference Design Kit
CapTouchSenseDC_Senso_Web.zip
CapTouchSense game
ConfigAndConfig2Install.exe
Configuration Wizard 2 Installer4.0112/7/2011
an102sw.zip
Configuring the internal and external oscillators
an101sw.zip
Configuring the Port I/O Crossbar Decoder
AN330SW.zip
Differences between the C8051F310 and the C8051T61x Device Family
AN568SW.zip
EEPROM emulation for flash microcontrollers
an127sw.zip
Flash programming via the C2 interface
UtilDLL.exe
FLASHUtil Installer4.0012/7/2011
Hex2Svf_Installer.exe
Hex to Svf conversion utility software
mcu_ide.exe
IDE Installer4.4012/7/2011
an107sw.zip
Implementing 16-bit PWM using the PCA
an108sw.zip
Implementing a real-time clock
an118sw.zip
Improving ADC resolution by oversampling and averaging
an140sw.zip
Integrating Hi-Tech 8051 tools into the Silicon Labs IDE
an208sw.zip
Integrating IAR 8051 Tools into the Silicon Laboratories IDE
an236sw.zip
Integrating IAR 8051 tools into the Silicon Labs IDE
AN198SW.zip
Integrating SDCC 8051 tools into the Silicon Labs IDE
AN126_sw.zip
Integrating Tasking 8051 tools into the Silicon Labs IDE
IR_Performance_Analysis_Tool.zip
IR Performance Analysis Tool
KeilV8Tools_Installer.zip
Keil Eval Tools Installer
an533sw.zip
Modular bootloader framework for Silicon Labs MCUs
an191sw.zip
Motor control software examples
an358sw.zip
Optimizing Low Power Operation of the 'F9xx
an138sw.zip
Power management techniques for the F30x and F31x
MCUProductionProgrammer.zip
Production Programmer2.7012/7/2011
an141sw.zip
SMBus communication for small form factor devices
an115sw.zip
Software UART examples
ToolStick_Setup.exe
ToolStick Development Tools
TouchPanel_RD.zip
TouchPanel Reference Design
USB_Reset_Utility.zip
USB Debug Adapter Reset Utility
an103sw.zip
Using the on-chip temperature sensor
SiC8051F_uVision.exe
uVision Driver3.6012/7/2011
VCP_WinCE60.zip
VCP Driver for WinCE60
VCP_WinCE50.zip
VCP Drivers for WinCE50
AN201SW.zip
Writing to flash from firmware

Schematics/Layout (10)

Document NameDescriptionVersionUpdated
ULADI_SiliconLabs_Reader.exe
ADI Ultra-Librarian Reader for CAD/CAE Schematic Footprints and Symbols .bxl Files
C8051F310.bxl
C8051F310 CAD/CAE Schematic Footprints and Symbols1.0
C8051F311.bxl
C8051F311 CAD/CAE Schematic Footprints and Symbols1.0
C8051F312.bxl
C8051F312 CAD/CAE Schematic Footprints and Symbols1.0
C8051F313.bxl
C8051F313 CAD/CAE Schematic Footprints and Symbols1.0
C8051F314.bxl
C8051F314 CAD/CAE Schematic Footprints and Symbols1.0
C8051F315.bxl
C8051F315 CAD/CAE Schematic Footprints and Symbols1.0
C8051F316.bxl
C8051F316 CAD/CAE Schematic Footprints and Symbols1.0
C8051F317.bxl
C8051F317 CAD/CAE Schematic Footprints and Symbols1.0
toolstickdctemplate.zip
ToolStick Daughter Card Template

Training (2)

Document NameDescriptionVersionUpdated
8051_Instruction_Set.pdf
8051 Instruction Set
Simplifying Microcontroller Development through Compiler Flexibility.pdf
Simplifying Microcontroller Development through Compiler Flexibility
 

 

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Product Matrix


Part Number Available DocumentsMIPS (peak)FlashRAMDig I/O PinsTimers (16-bit)PCA ChannelsInternal Osc.ADC 1ADC 2DACTemp SensorVREFComparatorsOtherPackageAlternativeDev KitCommunications
C8051F310Sample
Buy
Data Sheet
Data Short
2516 kB12802945±2%10-bit, 21ch., 200 kspsYesNo232-pin, 9x9, LQFPT610C8051F310DK
UART, I2C, SPI
C8051F311Sample
Buy
Data Sheet
Data Short
2516 kB12802545±2%10-bit, 17ch., 200 kspsYesNo228-pin, 5x5, QFNT611C8051F310DK
UART, I2C, SPI
C8051F312Sample
Buy
Data Sheet
Data Short
258 kB12802945±2%10-bit, 21ch., 200 kspsYesNo232-pin, 9x9, LQFPT612C8051F310DK
UART, I2C, SPI
C8051F313Sample
Buy
Data Sheet
Data Short
258 kB12802545±2%10-bit, 17ch., 200 kspsYesNo228-pin, 5x5, QFNT613C8051F310DK
UART, I2C, SPI
C8051F314Sample
Buy
Data Sheet
Data Short
258 kB12802945±2%NoNo232-pin, 9x9, LQFPT614C8051F310DK
UART, I2C, SPI
C8051F315Sample
Buy
Data Sheet
Data Short
258 kB12802545±2%NoNo228-pin, 5x5, QFNT615C8051F310DK
UART, I2C, SPI
C8051F316Sample
Buy
Data Sheet
Data Short
2516 kB12802145±2%10-bit,13ch.,200 kspsYesNo224-pin, 4x4, QFNT616C8051F310DK
UART, I2C, SPI
C8051F317Sample
Buy
Data Sheet
Data Short
2516 kB12802145±2%NoNo224-pin, 4x4, QFNT617C8051F310DK
UART, I2C, SPI

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