​C8051F41x Small Form Factor Microcontrollers​​​

​The C8051F41x small MCU family is the most analog-intensive small form factor MCU on the market. The C8051F41x small MCUs have an integrated 24-channel 12-bit ADC and dual 12-bit DACs. These mixed-signal microcontrollers include up to 32 kB of flash with 2 kB RAM in a 5 mm x 5 mm package.
With on-chip Power-On Reset, VDD monitor, Watchdog Timer and clock oscillator, the C8051F41x devices are truly standalone 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.


  • 50 MIPS 8051 CPU
  • 16 to 32 kB Flash
  • 2304 B RAM
  • 12-bit, 200 ksps,±1 LSB INL ADC
  • 12-bit DAC(s)
  • 24 digital I/O, 5.25 V tolerant smaRTClock
  • 2.0 to 5.25 V supply –40 to +85 °C operating temperature
  • On-chip debug



Expand AllCollapse All

Data Sheet (2)

Data Short (1)

C8051F41x Data Short
2.24.2006535 kB

Errata (1)

C8051F41x Errata
04.04.134/5/201393 kB

User Guides (10)

Quick Start Guide (1)

MCU Quick-Start Guide Featuring the USB Debug Adapter
0.51246 kB

Application Notes (29)

AN0822: Simplicity Studio User's Guide
0.12/12/20141412 kB
AN101: Configuring the Port I/O Crossbar Decoder
2.27/19/2013272 kB
AN103: Using the On-Chip Temperature Sensor
1.37/19/2013326 kB
AN104: Integrating Keil 8051 Tools into the IDE
3.06/18/2013525 kB
AN107: Implementing 16-bit PWM Using the PCA
1.1298 kB
AN111: Using the C8051Fxxx in 5 Volt Systems
1.37/20/2013243 kB
AN114: Hand Soldering Tutorial for Fine Pitch QFP Devices
1.13034 kB
AN117: Using the C8051Fxxx On-Chip Interface Utilities DLL
3.37/19/2013268 kB
AN119: Calculating Settling Time for Switched Capacitor ADCs
1.27/19/2013301 kB
AN123: Using the DAC as a Function Generator
1.1272 kB
AN124: Pin Sharing Techniques for the C2 Interface
1.27/19/2013191 kB
AN125: Integrating Raisonance 8051 Tools into the IDE
1.3162 kB
AN126: Integrating Tasking 8051 Tools into the Silicon Labs IDE
2.4207 kB
AN127: FLASH Programming via the C2 Interface
1.21/15/2013179 kB
AN136: Production Programming Options for MCU Devices
1.37/19/2013200 kB
AN140: Integrating HI-TECH 8051 Tools into the IDE
1.3207 kB
AN141: SMBus Communication for Small Form Factor Device Families
1.37/19/2013490 kB
AN148: Magnetic Stripe Reader
1.38/12/20081674 kB
AN198: Integrating SDCC 8051 Tools into the Silicon Labs IDE
0.2224 kB
AN201: Writing to Flash from Firmware
0.77/19/2013201 kB
AN203: C8051Fxxx Printed Circuit Board Design Notes
0.27/19/2013314 kB
AN236: Integrating IAR 8051 Tools into the Silicon Laboratories IDE
0.3442 kB
AN278: Voice Recorder Reference Design
0.27/19/2013648 kB
AN324: Advanced Encryption Standard
0.1176 kB
AN533: Modular Bootloader Framework for Silicon Labs C8051Fxxx Microcontrollers
0.112/3/2010165 kB
AN568: EEPROM Emulations for Flash Microcontrollers
0.11/5/201158 kB
AN767: SMBus Bootloader
0.14/24/201397 kB
AN778: UART Bootloader
0.16/18/2013224 kB
AN798: EEPROM Emulation with Wear-Leveling for 8-Bit Flash MCUs
0.110/21/201361 kB

White Papers (5)

Miscellaneous (1)

C2 Specification
1.1273 kB

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 (41)

Interfacing an External SRAM to the C8051Fxxx
2 kB
16-bit PWM using an on-chip timer
1 kB
8 Bits Tools Installer
4.907/23/2014680562 kB
Advanced encryption standard
20 kB
AN767SW: SMBus Bootloader Software
4/25/2013252 kB
AN778 Software
6/21/2013448 kB
C8051F411EK SW
5903 kB
CapTouchSense game
1219 kB
Configuration Wizard 2 Installer
4.4012/11/201316076 kB
Configuring the internal and external oscillators
7 kB
Configuring the Port I/O Crossbar Decoder
0 kB
EEPROM emulation for flash microcontrollers
16 kB
F850_BLDC_RD software kB
Flash programming via the C2 interface
97 kB
FLASHUtil Installer
4.407/23/20147754 kB
Hex to Svf conversion utility software
V 1.317/17/20123623 kB
IDE Installer
4.907/23/201425866 kB
Implementing 16-bit PWM using the PCA
6 kB
Implementing a real-time clock
2 kB
Improving ADC resolution by oversampling and averaging
3 kB
Integrating Hi-Tech 8051 tools into the Silicon Labs IDE
1 kB
Integrating IAR 8051 tools into the Silicon Labs IDE
12 kB
Integrating SDCC 8051 tools into the Silicon Labs IDE
7 kB
Integrating Tasking 8051 tools into the Silicon Labs IDE
1 kB
IR Performance Analysis Tool
7641 kB
Low Pin-Count LCD Interface Software
4 kB
Modular bootloader framework for Silicon Labs MCUs
372 kB
Production Programmer
3.207/23/20142594 kB
Simplicity Studio v2
v210/15/2014185708 kB
Simplicity Studio v2, Linux Installer
v210/15/2014197559 kB
Simplicity Studio v2, Mac Installer
v210/15/2014138770 kB
Simplicity Studio v2, Offline Installer
v210/15/20141912663 kB
SMBus communication for small form factor devices
223 kB
Software UART examples
13 kB
Three-Channel Power Sequencer.
25 kB
ToolStick Development Tools
2.60.18/2/201345699 kB
USB Debug Adapter Reset Utility
1.76/1/201349 kB
Using the on-chip temperature sensor
5 kB
uVision Driver
4.107/23/20144982 kB
Voice Recorder Reference Design
32 kB
Writing to flash from firmware
76 kB

Schematics/Layout (6)

Training (2)

Product Matrix
Part NumberMCU CoreMHzFlashRAMDig I/O PinsTimers (16-bit)PCA ChannelsInternal Osc.ADC 1ADC 2DACTemp SensorVREFComparatorsDebug InterfaceOtherPackage TypePackage SizeAlternativeDev KitAEC-Q100CommunicationsFootnotes
C8051F41080515032 kB2.252446±2%12-bit, 24-ch., 200 ksps12-bit, 2-ch.YesYes2C2RTC; VREGLQFP329x9 mmC8051F410DK
C8051F41180515032 kB2.252046±2%12-bit, 20-ch., 200 ksps12-bit, 2-ch.YesYes2C2RTC; VREGQFN285x5 mmC8051F410DK
C8051F41280515016 kB2.252446±2%12-bit, 24-ch., 200 ksps12-bit, 2-ch.YesYes2C2RTC; VREGLQFP329x9 mmC8051F410DK
C8051F41380515016 kB2.252046±2%12-bit, 20-ch., 200 ksps12-bit, 2-ch.YesYes2C2RTC; VREGQFN285x5 mmC8051F410DK
    The on-chip 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.


    Product Matrix





    More Info