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
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Packaging

Microchip Technology 8-bit Microcontrollers - MCU 64kB Flash 2048B RAM 2.7V-5.5V
Datasheet
445In Stock
1 879Expected 25/09/2026
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 60 MHz 64 kB 2 kB 32 I/O 2.7 V 5.5 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V
Datasheet
1 046In Stock
Min.: 1
Mult.: 1

SMD/SMT SOIC-20 8051 8 bit 20 MHz 4 kB 256 B No ADC 15 I/O 2.4 V 5.5 V + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 2.7V-4.0V
Datasheet
1 098In Stock
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 16 MHz 8 kB 256 B No ADC 32 I/O 2.7 V 4 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU 4kB Flash 128B RAM 33MHz 4.0V-5.5V
Datasheet
1 609In Stock
1 510Expected 30/09/2026
Min.: 1
Mult.: 1

Through Hole PDIP-40 8051 8 bit 24 MHz 4 kB 128 B No ADC 32 I/O 4 V 5.5 V + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V
Datasheet
343In Stock
2 781Expected 24/09/2026
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 24 MHz 12 kB 256 B No ADC 32 I/O 2.7 V 5.5 V + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V
Datasheet
660In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

SMD/SMT PLCC-44 8051 8 bit 40 MHz 1 kB 1.25 kB No ADC 32 I/O 2.7 V 5.5 V + 85 C Reel, Cut Tape, MouseReel

Microchip Technology 8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V
Datasheet
424In Stock
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 40 MHz 1 kB 1.25 kB No ADC 32 I/O 2.7 V 5.5 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU C51RD2 ROMless TQFP44 Ind 5V GREEN
Datasheet
1 929In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 40 MHz 1.25 kB No ADC 32 I/O 2.7 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51AC3 64kF ADC EEP TQFP44 ind 5V GREEN
Datasheet
156In Stock
160Expected 30/09/2026
Min.: 1
Mult.: 1

SMD/SMT TQFP-64 8051 8 bit 60 MHz 64 kB 128 B 10 bit 36 I/O 3 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU CAN TQFP44 TRAY I. Bootloader UART GREEN
Datasheet
723In Stock
2 240Expected 30/09/2026
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 40 MHz 32 kB 1.25 kB 10 bit 34 I/O 3 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51ED2 64kF TQFP44 3-5.5V Ind GREEN
Datasheet
611In Stock
1 440Expected 30/09/2026
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 60 MHz 64 kB 2 kB 34 I/O 2.7 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51IC2 32Kf I2C 32KHz TQFP44 I. 5V GREEN
Datasheet
191In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 60 MHz 32 kB 1.25 kB No ADC 34 I/O 2.7 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51RB2 FLASH 16k TQFP44 ind 3V GREEN
Datasheet
1 000In Stock
Min.: 1
Mult.: 1
: 2 000

SMD/SMT TQFP-44 8051 8 bit 60 MHz 16 kB 1.25 kB No ADC 32 I/O 2.7 V 3.6 V + 85 C Reel, Cut Tape
Microchip Technology 8-bit Microcontrollers - MCU C51RB2 FLASH 16k TQFP44 COM 5V GREEN
Datasheet
330In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 60 MHz 16 kB 1.25 kB No ADC 32 I/O 2.7 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51RC2 FLASH 32k TQFP44 Com 5V GREEN
Datasheet
864In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 60 MHz 32 kB 1.25 kB No ADC 32 I/O 2.7 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51RD2 64kF TQFP44 3-5.5V Ind. GREEN
Datasheet
427In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 60 MHz 64 kB 2 kB 34 I/O 2.7 V 5.5 V + 85 C Tray

Microchip Technology 8-bit Microcontrollers - MCU 24MHZ, PLCC, IND TEMP, GREEN, 5V
Datasheet
417In Stock
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 24 MHz 20 kB 256 B No ADC 32 I/O 4 V 5.5 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU 20K FLASH - 24MHZ IND TEMP 5V
Datasheet
876In Stock
900Expected 02/10/2026
Min.: 1
Mult.: 1

Through Hole PDIP-40 8051 8 bit 24 MHz 20 kB 256 B No ADC 32 I/O 4 V 5.5 V + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU Single-Cycle 805124K ISP Flash,2.4-5.5V
Datasheet
738In Stock
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 20 MHz 24 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 805132K ISP Flash,2.4-5.5V
Datasheet
530In Stock
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 20 MHz 32 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
2 834In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 20 MHz 8 kB 256 B No ADC 36 I/O 2.4 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU 24 MHZ, TQFP44, IND TEMP, GREEN
Datasheet
2 953In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 000

SMD/SMT TQFP-44 8051 8 bit 24 MHz 8 kB 256 B No ADC 32 I/O 4 V 5.5 V + 85 C Reel, Cut Tape, MouseReel

Microchip Technology 8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 4.0V-5.5V
Datasheet
983In Stock
2 403Expected 29/09/2026
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 24 MHz 8 kB 256 B No ADC 32 I/O 4 V 5.5 V + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 8-bit MCU
Datasheet
750In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-32 8051 8 bit 48 MHz 64 kB 4.25 kB 10 bit 25 I/O 2.7 V 5.25 V + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB 8-bit MCU
Datasheet
1 322In 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