8051 Core Microcontrollers - MCU

Types of Microcontrollers - MCU
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Qty. RoHS Mounting Style
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Core
Data Bus Width
Maximum Clock Frequency
Program Memory Size
Data RAM Size
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Number of I/Os
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Supply Voltage - Max
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Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 128 kB 5 V CAN LIN 8-bit MCU
Datasheet
5,023In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-32 8051 8 bit 50 MHz 128 kB 8.25 kB 12 bit 25 I/O 1.8 V 5.25 V + 125 C AEC-Q100 Tube
Analog Devices / Maxim Integrated 8-bit Microcontrollers - MCU EPROM/ROM High-Speed Microcontrollers
Datasheet
679In Stock
Min.: 1
Mult.: 1
Max.: 679

Through Hole PDIP-40 8051 8 bit 33 MHz 16 kB 1 kB No ADC 32 I/O 4.5 V 5.5 V + 70 C Tube

Analog Devices / Maxim Integrated 8-bit Microcontrollers - MCU EPROM/ROM High-Speed Microcontrollers
Datasheet
786In Stock
Min.: 1
Mult.: 1
Max.: 750

SMD/SMT PLCC-44 8051 8 bit 33 MHz 16 kB 1 kB No ADC 32 I/O 4.5 V 5.5 V + 85 C Tube

Lumissil 8-bit Microcontrollers - MCU Automotive MCU with 2KB SRAM and 32Kx16 ECC E-Flash, QFN-24 (4mm x 4mm)
Datasheet
2,450In Stock
Min.: 1
Mult.: 1
: 2,500

SMD/SMT WQFN-24 8051 8 bit 25 MHz 32 KB 2 KB 20 I/O 2.5 V 5.5 V + 125 C Reel, Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 2 kB 8-bit MCU
Datasheet
375In Stock
Min.: 1
Mult.: 1

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 AEC-Q100 Tube

Microchip Technology 8-bit Microcontrollers - MCU 2kB Flash 128B RAM 24MHz 2.7V-6.0V
Datasheet
1,413In Stock
Min.: 1
Mult.: 1

Through Hole PDIP-20 8051 8 bit 24 MHz 2 kB 128 B No ADC 15 I/O 4 V 6 V + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU 20 PINS 2K FLASH 12MHZ 2.7 - 5.5V
Datasheet
951In Stock
Min.: 1
Mult.: 1

Through Hole PDIP-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 CAN-STICK Bootloader UART IND
Datasheet
1,539In Stock
Min.: 1
Mult.: 1

SMD/SMT PLCC-44 8051 8 bit 40 MHz 32 kB 1.2 kB 10 bit 34 I/O 3 V 5.5 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU 4K ISP FLASH 2.7 TO 5.5V - 24MHz
Datasheet
4,294In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 24 MHz 4 kB 128 B No ADC 32 I/O 4 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 4.0V-5.5V
Datasheet
2,633In Stock
Min.: 1
Mult.: 1

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 Tray
Microchip Technology 8-bit Microcontrollers - MCU C51AC2 32kF ADC EEP TQFP44 ind 5V GREEN
Datasheet
332In Stock
2,720Expected 9/4/2026
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 40 MHz 32 kB 128 B 10 bit 34 I/O 3 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU CAN TQFP44 TRAY I. Bootloader CAN GREEN
Datasheet
922In Stock
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 64KB 20MHz 2.4V-5.5V
Datasheet
676In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-44 8051 8 bit 20 MHz 64 kB 256 B 10 bit 36 I/O 2.4 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU Single-Cycle 805132K ISP Flash,2.4-5.5V
Datasheet
593In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 20 MHz 32 kB 256 B 10 bit 40 I/O 2.4 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Datasheet
972In Stock
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
Microchip Technology 8-bit Microcontrollers - MCU Single-Cycle 8051 64K ISP Flash
Datasheet
437In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 20 MHz 64 kB 4.25 kB 10 bit 38 I/O 2.4 V 3.6 V + 85 C Tray
Texas Instruments RF Microcontrollers - MCU RF Bluetooth SMART S OC with USB BLE A 5 A 595-CC2540F128RHAT
Datasheet
646In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

SMD/SMT VQFN-40 8051 8 bit 128 kB 8 kB 21 I/O 2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU
Datasheet
685In Stock
3,000Expected 11/27/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

SMD/SMT QFN-28 8051 8 bit 25 MHz 16 kB 1.25 kB 10 bit 25 I/O 2.7 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU
Datasheet
1,057In Stock
1,533Expected 11/20/2026
Min.: 1
Mult.: 1

SMD/SMT QFN-28 8051 8 bit 50 MHz 32 kB 2.31 kB 12 bit 20 I/O 2 V 5.25 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V
Datasheet
695In Stock
Min.: 1
Mult.: 1

SMD/SMT SOIC-20 8051 8 bit 24 MHz 4 kB 128 B No ADC 15 I/O 4 V 6 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU C5130A 16K Flash USB 5V
Datasheet
6In Stock
160Expected 9/11/2026
Min.: 1
Mult.: 1

SMD/SMT VQFP-64 8051 8 bit 48 MHz 16 kB 1 kB No ADC 34 I/O 2.7 V 5.5 V + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C5130A 32K Flash USB
Datasheet
130In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-32 8051 8 bit 48 MHz 32 kB 1 kB No ADC 34 I/O 2.7 V 5.5 V + 85 C Tray

Microchip Technology 8-bit Microcontrollers - MCU C5131A 32K Flash USB Ind 3V
Datasheet
21In Stock
Min.: 1
Mult.: 1

SMD/SMT SOIC-28 8051 8 bit 48 MHz 32 kB 1 kB No ADC 18 I/O 3 V 3.6 V + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU C51-CAN Bootloader CAN
Datasheet
28In Stock
Min.: 1
Mult.: 1

SMD/SMT PLCC-28 8051 8 bit 40 MHz 16 kB 512 B 10 bit 20 I/O 3 V 5.5 V + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU CTRL Bootloader CAN
Datasheet
43In Stock
Min.: 1
Mult.: 1

SMD/SMT SOIC-28 8051 8 bit 40 MHz 16 kB 512 B 10 bit 20 I/O 3 V 5.5 V + 85 C Tube