8051 microcontroller Microcontrollers - MCU

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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
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
Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
Datasheet
4 493In Stock
Min.: 1
Mult.: 1
: 1 500

SMD/SMT QFN-28 CIP-51 8051 8 bit 50 MHz 16 kB 2.25 kB 12 bit 22 I/O 2.2 V 3.6 V + 85 C Reel, Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Datasheet
4 177In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

SMD/SMT QFN-32 CIP-51 8051 8 bit 50 MHz 16 kB 2.3 kB 10 bit, 12 bit 29 I/O 2.2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
Datasheet
2 120In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

SMD/SMT QFN-24 CIP-51 8051 8 bit 50 MHz 64 kB 4.35 kB 10 bit, 12 bit 20 I/O 2.2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
Datasheet
1 394In Stock
49 500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

SMD/SMT QFN-20 CIP-51 8051 8 bit 50 MHz 16 kB 2.25 kB 12 bit 13 I/O 2.2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Datasheet
2 666In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

SMD/SMT QFN-28 CIP-51 8051 8 bit 50 MHz 16 kB 2.3 kB 12 bit 22 I/O 2.2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU
Datasheet
2 547In Stock
5 040Expected 9/11/2026
Min.: 1
Mult.: 1

SMD/SMT QFN-20 CIP-51 8051 8 bit 50 MHz 8 kB 2.25 kB 12 bit 13 I/O 2.2 V 3.6 V + 85 C Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Datasheet
1 520In Stock
Min.: 1
Mult.: 1
: 1 500

SMD/SMT QFN-24 CIP-51 8051 8 bit 50 MHz 32 kB 2.3 kB 10 bit, 12 bit 20 I/O 2.2 V 3.6 V + 125 C Reel, Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
Datasheet
1 599In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-32 CIP-51 8051 8 bit 50 MHz 64 kB 4.35 kB 10 bit, 12 bit 29 I/O 2.2 V 3.6 V + 125 C Tray
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
Datasheet
2 603In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-32 CIP-51 8051 8 bit 72 MHz 64 kB 4.25 kB 10 bit/12 bit/14 bit 29 I/O 2.2 V 3.6 V + 105 C Tray
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

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
Datasheet
22In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-20 CIP-51 8051 8 bit 25 MHz 4 kB 512 B 12 bit 16 I/O 1.8 V 3.6 V + 85 C Tube
Infineon Technologies 8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
Datasheet
134In Stock
Min.: 1
Mult.: 1

SMD/SMT SSOP-48 8051 8 bit 50 MHz 32 kB 4 kB 12 bit 29 I/O 1.71 V 5.5 V + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
Datasheet
4 091In Stock
Min.: 1
Mult.: 1
: 1 500

SMD/SMT QFN-24 CIP-51 8051 8 bit 72 MHz 64 kB 4.25 kB 10 bit/12 bit/14 bit 20 I/O 2.2 V 3.6 V + 105 C Reel, Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
Datasheet
995In Stock
1 500Expected 11/30/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

SMD/SMT QFN-24 CIP-51 8051 8 bit 50 MHz 64 kB 4.35 kB 10 bit, 12 bit 20 I/O 2.2 V 3.6 V + 125 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
Datasheet
5 987In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-24 CIP-51 8051 8 bit 50 MHz 64 kB 4.35 kB 10 bit, 12 bit 20 I/O 2.2 V 3.6 V + 85 C Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU
Datasheet
325In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-32 CIP-51 8051 8 bit 48 MHz 64 kB 4.25 kB 10 bit 25 I/O 3.3 V 3.3 V + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
Datasheet
4 062In Stock
Min.: 1
Mult.: 1
: 2 500

SMD/SMT QFN-32 CIP-51 8051 8 bit 72 MHz 64 kB 4.25 kB 10 bit/12 bit/14 bit 29 I/O 2.2 V 3.6 V + 105 C Reel, Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
Datasheet
152In Stock
Min.: 1
Mult.: 1

SMD/SMT QSOP-24 CIP-51 8051 8 bit 25 MHz 8 kB 512 B 12 bit 17 I/O 1.8 V 3.6 V + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU
Datasheet
2 189In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-20 16 kB 1.28 kB 16 I/O 1.8 V 5.5 V + 85 C Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 25 GPIO BB5 8-bit MCU
Datasheet
86In Stock
Min.: 1
Mult.: 1

SMD/SMT TSSOP-28 16 kB 1.28 kB 16 I/O 1.8 V 5.5 V + 85 C Cut Tape

Nuvoton 8-bit Microcontrollers - MCU Low Pin Count 8051 Series; 2.4V to 5.5V; -40? to 85?
Datasheet
485In Stock
888Expected 4/20/2027
Min.: 1
Mult.: 1

SMD/SMT TSSOP-20 8051 8 bit 16 MHz 18 kB 256 B 12 bit 18 I/O 2.4 V 5.5 V + 105 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
Datasheet
2 499In Stock
Min.: 1
Mult.: 1
: 2 500

SMD/SMT QFN-20 16 kB 1.28 kB 16 I/O 1.8 V 5.5 V + 85 C Reel, Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
Datasheet
364In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-24 CIP-51 8051 8 bit 25 MHz 16 kB 4.25 kB 10 bit 16 I/O 1.8 V 3.6 V + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL
Datasheet
60In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 bit 20 MHz 32 kB 4.25 kB 10 bit 38 I/O 2.4 V 3.6 V + 85 C Tray
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
Datasheet
1 060In Stock
7 500Expected 1/4/2027
Min.: 1
Mult.: 1
: 2 500
SMD/SMT QFN-20 16 kB 1.28 kB 16 I/O 1.8 V 5.5 V + 85 C Reel, Cut Tape