8051 Core Microcontrollers - MCU

Types of Microcontrollers - MCU
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Qty. RoHS Mounting Style
Package/Case
Core
Data Bus Width
Maximum Clock Frequency
Program Memory Size
Data RAM Size
ADC Resolution
Number of I/Os
Supply Voltage - Min
Supply Voltage - Max
Maximum Operating Temperature
Qualification
Packaging

Analog Devices / Maxim Integrated 8-bit Microcontrollers - MCU MICRO HS 44PLCC 25MHZ IND T&R PB-FR
Datasheet
46In Stock
Min.: 1
Mult.: 1
Max.: 46

SMD/SMT PLCC-44 8051 8 bit 25 MHz 64 kB 256 B No ADC 32 I/O 4 V 5.5 V + 85 C Tube
Analog Devices / Maxim Integrated 8-bit Microcontrollers - MCU High-Speed/Low-Power Microcontrollers
Datasheet
8In Stock
Min.: 1
Mult.: 1
Max.: 8

Through Hole PDIP-40 8051 8 bit 33 MHz 64 kB 256 B No ADC 32 I/O 4.5 V 5.5 V + 85 C Tube

Analog Devices / Maxim Integrated 8-bit Microcontrollers - MCU High-Speed/Low-Power Microcontrollers
Datasheet
56In Stock
Min.: 1
Mult.: 1
Max.: 56

SMD/SMT PLCC-44 8051 8 bit 18 MHz 64 kB 256 B No ADC 32 I/O 2.7 V 5.5 V + 70 C Tube

Analog Devices / Maxim Integrated 8-bit Microcontrollers - MCU Ultra-High-Speed Flash Microcontrollers
Datasheet
36In Stock
Min.: 1
Mult.: 1
Max.: 36

SMD/SMT PLCC-44 8051 8 bit 33 MHz 64 kB 1 kB No ADC 32 I/O 4.5 V 5.5 V + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU 64kB Flash 2048B RAM 2.7V-5.5V
Datasheet
1,413Expected 04/09/2026
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 60 MHz 64 kB 2 kB No ADC 34 I/O 2.7 V 5.5 V + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB 8-bit MCU
Datasheet
1,592In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-24 8051 8 bit 50 MHz 16 kB 1 kB 10 bit 21 I/O 1.8 V 3.6 V + 105 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN24
Datasheet
1,497Expected 12/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

SMD/SMT QFN-24 8051 8 bit 50 MHz 16 kB 1 kB 10 bit 21 I/O 1.8 V 3.6 V + 105 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8KB/512B RAM, ADC, SOIC16
Datasheet
3,674Expected 15/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT SOIC-16 8051 8 bit 25 MHz 8 kB 512 B 12 bit 13 I/O 2.2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
Silicon Labs 8-bit Microcontrollers - MCU 32KB,12ADC,48Pin MCU
Datasheet
1,498On Order
Min.: 1
Mult.: 1

SMD/SMT TQFP-48 8051 8 bit 25 MHz 32 kB 2.25 kB 12 bit 16 I/O 2.7 V 3.6 V + 85 C Tray

Silicon Labs 8-bit Microcontrollers - MCU 25 MIPS, 8 kB, 256, SPI, UART, LIN 2.1, TSSOP20
Datasheet
6,694Expected 01/01/2027
Min.: 1
Mult.: 1

SMD/SMT TSSOP-20 8051 8 bit 25 MHz 8 kB 256 B 12 bit 16 I/O 1.8 V 5.25 V + 125 C Tube
Microchip Technology 8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Datasheet
480Expected 19/11/2026
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 20 MHz 64 kB 256 B 10 bit 40 I/O 2.4 V 5.5 V + 85 C Tray
Silicon Labs 8-bit Microcontrollers - MCU 8kB/256B RAM, 2% osc, QFN11 OTP available (T601-GM)
Datasheet
3,000Expected 27/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

SMD/SMT QFN-11 8051 8 bit 25 MHz 8 kB 256 B No ADC 8 I/O 2.7 V 3.6 V + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB LFO 8-bit MCU
Datasheet
1,911Expected 16/10/2026
Min.: 1
Mult.: 1

SMD/SMT QFN-20 8051 8 bit 25 MHz 8 kB 768 B 10 bit 17 I/O 2.7 V 3.6 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU 20 PINS UART 2K FLASH-2MHZ 4V-5.5V
Datasheet
110Expected 09/09/2026
Min.: 1
Mult.: 1

SMD/SMT SOIC-20 8051 8 bit 12 MHz 2 kB 128 B No ADC 15 I/O 2.7 V 6 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 12MHZ 4V-5.5V
Datasheet
552On Order
Min.: 1
Mult.: 1

SMD/SMT SOIC-20 8051 8 bit 12 MHz 4 kB 128 B No ADC 15 I/O 2.7 V 6 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Datasheet
140On Order
Min.: 1
Mult.: 1

Through Hole PDIP-40 8051 8 bit 20 MHz 64 kB 256 B 10 bit 40 I/O 2.4 V 5.5 V + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU
Datasheet
130Expected 14/09/2026
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 20 MHz 8 kB 256 B No ADC 36 I/O 2.4 V 5.5 V + 85 C Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 64 kB CAN 8-bit MCU
Datasheet
425Expected 30/10/2026
Min.: 1
Mult.: 1

SMD/SMT TQFP-100 8051 8 bit 25 MHz 64 kB 4.25 kB 8 bit, 12 bit 64 I/O 2.7 V 3.6 V + 85 C Tray

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 64 kB CAN 8-bit MCU
Datasheet
246Expected 08/09/2026
Min.: 1
Mult.: 1
: 250

SMD/SMT TQFP-100 8051 8 bit 25 MHz 64 kB 4.25 kB 10 bit 64 I/O 2.7 V 3.6 V + 85 C Reel, Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8kB/768B RAM, QFN20 OTP available (T631-GM)
Datasheet
1,500Expected 16/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

SMD/SMT QFN-20 8051 8 bit 25 MHz 8 kB 768 B No ADC 17 I/O 2.7 V 3.6 V + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB 5 V 8-bit MCU
Datasheet
1,551Expected 01/01/2027
Min.: 1
Mult.: 1

SMD/SMT TSSOP-20 8051 8 bit 25 MHz 8 kB 256 B 12 bit 16 I/O 2 V 5.25 V + 125 C AEC-Q100 Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 128 kB 5 V CAN LIN 8-bit MCU
Datasheet
810Expected 29/01/2027
Min.: 1
Mult.: 1

SMD/SMT QFN-48 8051 8 bit 24 MHz 128 kB 8.25 kB 12 bit 40 I/O 1.8 V 5.25 V + 125 C AEC-Q100 Tube

Nuvoton 8-bit Microcontrollers - MCU 16KB Flash ROM, 1KB SRAM, 1 CHs of SPI,1T/8051
Datasheet
499Expected 24/03/2027
Min.: 1
Mult.: 1

SMD/SMT LQFP-32 8051 8 bit 24 MHz 16 kB 2 kB 12 bit 28 I/O 1.8 V 5.5 V + 105 C Tray
Nuvoton 8-bit Microcontrollers - MCU 32KB Flash ROM, 2KB SRAM, 2 CHs of SPI,1T/8051
Datasheet
490Expected 26/03/2027
Min.: 1
Mult.: 1

SMD/SMT QFN-33 8051 8 bit 24 MHz 32 kB 2 kB 12 bit 28 I/O 1.8 V 5.5 V + 105 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51RB2 FLASH 5V 16k ind
Datasheet
Lead-Time 9 Weeks
Min.: 1
Mult.: 1

Through Hole PDIP-40 8051 8 bit 60 MHz 16 kB 1.25 kB No ADC 32 I/O 2.7 V 5.5 V + 85 C Tube