This is a list of microcontrollers, organized by brand.
Altera
In 2015, Altera was acquired by Intel, and then spun back out on its own in 2024.
Nios II 32-bit configurable soft microprocessor Nios 16-bit configurable soft processor
Analog Devices Blackfin Super Harvard Architecture Single-Chip Computer (SHARC) TigerSHARC ADSP-21xx digital signal processor MicroConverter Family – ARM7 and 8051 cores
ARM
While Arm is a fabless semiconductor company (it does not manufacture or sell its own chips), it licenses the ARM architecture family design to a variety of companies. Those companies in turn sell billions of ARM-based chips per year—12 billion ARM-based chips shipped in 2014,Kat Hall. "UK chip champ ARM flexes muscle: Shows strong profit and sales" 2015. about 24 billion ARM-based chips shipped in 2020,Anton Shilov. "842 Chips Per Second: 6.7 Billion Arm-Based Chips Produced in Q4 2020". 2021. some of those are popular chips in their own right.
Atmel
In 2016, Atmel was sold to Microchip Technology. AT89 series (Intel 8051 architecture) AT90, ATtiny, ATmega, ATxmega series (AVR architecture) (Atmel Norway design) AT91SAM (ARM architecture) AVR32 (32-bit AVR architecture) (Atmel Norway design) MARC4
Cypress Semiconductor
In 2020, Cypress Semiconductor was acquired by Infineon Technologies. CY8C2xxxx (PSoC1), M8C CY8C3xxxx (PSoC3), 8051 CY8C4xxxx (PSoC4), ARM Cortex-M0 CY8C5xxxx (PSoC5), ARM Cortex-M3 PSoC (Programmable System on Chip)
ELAN Microelectronics Corp. ELAN Microelectronics Corporation is an IC designer and provider of 8-bit microcontrollers and PC Peripheral ICs. Headquartered in Hsinchu Science Park, the Silicon Valley of Taiwan, ELAN's microcontroller product range includes the following:
EM78PXXX Low Pin-Count MCU Family EM78PXXX GPIO Type MCU Family EM78PXXXN ADC Type MCU Family
These are clones of the 12- and 14-bit Microchip PIC line of processors, but with a 13-bit instruction word.
EPSON Semiconductor 4-bit S1C6x family 8-bit S1C88 family 16-bit S1C17 family 32-bit S1C33 family
Espressif Systems Espressif Systems, a company with headquarters in Shanghai, China made its debut in the microcontroller scene with their range of inexpensive and feature-packed WiFi microcontrollers such as ESP8266.
32-bit ESP8266 ESP32 Xtensa variants ESP32, ESP32-S2, ESP32-S3 SoCs ESP32 RISC-V variants ESP32C2, ESP32C3, ESP32C6, ESP32H2 SoCs
Freescale Semiconductor
Until 2004, these microcontrollers were developed and marketed by Motorola, whose semiconductor division was spun off to establish Freescale. In 2015, Freescale was acquired by NXP.
8-bit Freescale S08 68HC05 (CPU05) 68HC08 (CPU08) 68HC11 (CPU11) 16-bit Freescale S12 68HC12 (CPU12) 68HC16 (CPU16) Freescale DSP56800 (DSPcontroller) 32-bit Freescale Kinetis (ARM architecture) Freescale 683XX MCF5xxx (Freescale Coldfire) M·CORE MPC500 MPC 860 (PowerQUICC) MPC 8240/8250 (PowerQUICC II) MPC 8540/8555/8560 (PowerQUICC III) MPC 5554/5566 MPC 5777
Fujitsu
Holtek Holtek Semiconductor is a major Taiwan-based designer of 32-bit microcontrollers, 8-bit microcontrollers and peripheral products. Microcontroller products are centred around an ARM core in the case of 32-bit products and 8051 based core and Holtek's own core in the case of 8-bit products. Located in the Hsinchu Science Park (), the company's product range includes the following microcontroller device series:
HT32FXX 32-bit ARM core microcontroller series using Cortex-M0+, M3 and M4 cores HT85FXX 8051 Core based microcontroller series HT48FXX Flash I/O type series HT48RXX I/O type series HT46RXX A/D type series HT49RXX LCD type series HT82XX Computer Peripheral series HT95XX Telecom Peripheral series HT68FXX I/O Type Flash series HT66FXX A/D Type Flash series HK32XX 32-bit ARM core series
Hyperstone 32-bit Hyperstone microprocessors: E1, introduced in 1990, and E2, introduced in 2009
Infineon Infineon offers microcontrollers for the automotive, industrial and multimarket industry. DAVE3, a component based auto code generation free tool, provides faster development of complex embedded projects.
8-bit XC800 family Based on the 8051 architecture the XC800 is divided into the A-(Automotive) and I-(Industrial) Family, providing low cost micros, for example applied in applications like body, safety, motor control, intelligent lighting and electro mobility 16-bit XE166 family, a Real Time Signal Controller applied in industrial applications XC 2000 family, designed for Automotive applications C166 family C167 family 32-bit Infineon XMC4000 is an ARM Cortex M4F based microcontroller family for industrial applications. TriCore™ family is based on a unified RISC/MCU/DSP processor core. Infineon launched the first generation of AUDO (Automotive unified processor) in 1999. The TC1782 is the first member of the AUDO MAX family designed for automotive applications Infineon XMC1000 is a 32-bit Industrial Microcontroller ARM® Cortex™-M0, 32 MHz. Infineon Embedded Power Relay Driver IC (TLE984x) - ARM® Cortex™-M0 based family for automotive applications Infineon Embedded Power 2-Phase Bridge Driver IC (TLE986x) - ARM® Cortex™-M3 based family for Brushed DC Motors Infineon Embedded Power 3-Phase Bridge Driver IC (TLE987x) - ARM® Cortex™-M3 based family for Brushless DC Motors
Intel
8-bit MCS-48 8048 family – also incl. 8035, 8038, 8039, 8040, 8X42, 8X49, 8050; X=0 or 7 MCS-51 8051 family – also incl. 8X31, 8X32, 8X52; X=0, 3, 7 or 9 MCS-151 High-performance 8051 instruction set/binary compatible family 8/16-bit/32-bit MCS-251 32-bit ALU with 1/8/16/32-bit CISC instruction set and 24-bit external address space (16-bit wide segmented). Fully binary compatible to the 8051 8-bit family. 16-bit MCS-96 (8096 family – also incl. 8061) Intel MCS-296
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Lattice Semiconductor Mico8 8-bit soft microprocessor Mico32 32-bit soft microprocessor
Maxim Integrated In 2021, Maxim Integrated was acquired by Analog Devices. 8051 Family MAXQ RISC Family Secure Micros Family ARM 922T MIPS 4kSD
Microchip Technology
Since 2013, Microchip has shipped over 1 billion PIC microcontrollers per year, growing every year."Microchip Technology Delivers 12 Billionth PIC Microcontroller to Leading Motor Manufacturer, Nidec Corporation". Microchip press release. 2013.
Microchip produces microcontrollers with three very different architectures:
8-bit (8-bit data bus) PICmicro, with a single accumulator (8 bits):
PIC10 and PIC12: 12-bit instruction words PIC16 series: 14-bit instruction words, one address pointer ("indirect register pair") PIC16F628 (Replacement for very popular but discontinued PIC16F84) – PIC16F84A is still in production as of April 8, 2022. PIC18 series: 16-bit instruction words, three address pointers ("indirect register pairs") 16-bit (16-bit data bus) microcontrollers, with 16 general-purpose registers (each 16-bit) PIC24: 24-bit instruction words dsPIC: based on PIC24, plus DSP functions, such as a single-cycle MAC (multiply–accumulate) into two 40-bit accumulators.
32-bit (32-bit data bus) microcontrollers:
PIC32MM Series: 16/32-bit instructions, uses the MIPS32 microAptiv UC Core MIPS architecture PIC32MX series: 32-bit instructions, uses the MIPS32 M4K Core MIPS architecture PIC32MZ series: 32-bit instructions, uses the MIPS32 M-Class Core MIPS architecture
National Semiconductor
4-bit COP400 8-bit COP8 16-bit CR16
NEC 4-bit 17K 75X 75XL 8-bit 87XL 87AD 78K Family (8/16-bit) 8-bit: 78K/1, 78K/2, 78K/0, 78K0S 16-bit: 78K/3, 78K/6, 78K/4, 78K0R 32-bit V60V80 V810/V830 V850
Nordic Semiconductor Nordic Semiconductor is a company with headquarters in Trondheim, Norway offering low power Bluetooth Low Energy SoCs as well as cellular network connectivity solutions for IoT devices. 32-bit BLE SoCs NRF51, NRF52, NRF53 Series 32-bit Cellular IoT SIP NRF91 Series
NXP Semiconductors
8-bit LPC700, LPC900 series are 80C51-based 16-bit XA 32-bit ARM7 LPC2100, LPC2200, LPC2300, LPC2400 series ARM9 LPC2900, LPC3100, LPC3200 series ARM Cortex-M0 LPC1100, LPC1200 series ARM Cortex-M0+ LPC800 series ARM Cortex-M3 LPC1300, LPC1700, LPC1800 series ARM Cortex-M4 LPC4000, LPC4300 series ARM Cortex-M7 RT1050, RT1050 series
Nuvoton Technology 8-bit 8051 MCUs KM101 MCUs 32-bit ARM Cortex-M0 MCUs ARM Cortex-M4 MCUs ARM Cortex-M7 MCUs ARM Cortex-M23 MCUs KM103 MCUs
Panasonic
List of Panasonic Microcontrollers / microcomputers 4-bit MN1400 MN1500 MN1700 8-bit MN1870 MN1880 AM1 (MN101) 16-bit AM2 (MN102) 32-bit AM3, AM32 (MN1030, MN103, MN103E, MN103L, MN103S, MN103H)
Parallax Basic Stamp SX These were formerly made by Ubicom, former Scenix Semiconductor. The SX die has been discontinued by Ubicom. Parallax has accumulated a large stock of the dies and is managing the packaging. SX-18, 20, 28, 48 and 52 versions (Note that the SX-18 and SX-52 have been discontinued) Propeller The Propeller is a 8-core 32-bit microcontroller with 32 KB internal RAM.
Rabbit Semiconductor Rabbit 2000 Rabbit 3000 Rabbit 4000 Rabbit 5000 Rabbit 6000
Raspberry Pi Foundation
32-bit ARM Cortex-M0+ RP2040 32-bit ARM Cortex-M33 RP2350
Renesas Electronics Renesas is a joint venture comprising the semiconductor businesses of Hitachi, Mitsubishi Electric and NEC Electronics, creating the largest microcontroller manufacturer in the world.
4-bit microcontrollers 720 8-bit microcontrollers 78K0 78K0S 740 16-bit microcontrollers RL78 78K0R R8C M16C H8S H8 H8/Super Low Power 32-bit microcontrollers RH850 RX SuperH V850 R32C M32C M32R H8SX
Redpine Signals RS14100 RS13100
Rockwell Rockwell semiconductors (now called Conexant) created a line of 6502 based microcontrollers that were used with their telecom (modem) chips. Most of their microcontrollers were packaged in a QIP package.
R6501 R6511 R8070
Silicon Laboratories Manufactures a line of 8-bit 8051-compatible microcontrollers, notable for high speeds (50–100 MIPS) and large memories in relatively small package sizes. A free IDE is available that supports the USB-connected ToolStick line of modular prototyping boards. These microcontrollers were originally developed by Cygnal. In 2012, the company introduced ARM-based mixed-signal MCUs with very low power and USB options, supported by free Eclipse-based tools. The company acquired Energy Micro in 2013 and now offers a number of ARM-based 32-bit microcontrollers.
8-bit C8051 EFM8 series 32-bit ARM Cortex-M0+ EFM32 Zero ARM Cortex-M3 EFM32 Tiny, Gecko, Leopard, Giant ARM Cortex-M4 EFM32 Wonder
Silicon Motion SM2XX – Flash memory card controllers SM321 – USB 2.0 SM323 – USB 2.0 SM323E – USB 2.0 Silicon Motion's SM321E and SM324 controllers support SLC and MLC NAND flash from Samsung, Hynix, Toshiba and ST Micro as well as flash products from Renesas, Infineon and Micron. The SM321E is available in a 48-pin LQFP package and a 44-pin LGA package. The SM321E supports up to 4 SLC or MLC NAND flash chips with 4 bytes / 528 bytes ECC SM324 – USB 2.0 Supports dual-channel data transfer at read speeds of 233× (35 MB/s) and write speeds of 160× (24 MB/s), making it the fastest USB 2.0 flash disk controller in the market. The SM324 also has serial peripheral interface (SPI) which allows for not only Master and Slave modes, but the flexibility to develop more functionality into USB flash disk (UFD) products such as GPS, fingerprint sensor, Bluetooth and memory-capacity display. The SM324 is available in a 64-pin LQFP package. The SM324 supports 8 SLC or MLC NAND flash chips with 4 bytes / 528 bytes ECC. SM325 – USB 2.0 SM330 – USB 2.0 SM501, SM502 – Mobile Graphics SM712 – Mobile Graphics SM722 – Mobile Graphics SM340 – MP3/JPEG SM350 – MP3/JPEG