8051 microcontroller 8-bit Microcontrollers - MCU

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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Core
Program Memory Size
Data RAM Size
Package/Case
Maximum Clock Frequency
ADC Resolution
Number of I/Os
Supply Voltage - Min
Supply Voltage - Max
Mounting Style
Data Bus Width
Minimum Operating Temperature
Maximum Operating Temperature
Series
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Infineon Technologies 8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
Datasheet
147In Stock
Min.: 1
Mult.: 1

8051 64 kB 8 kB QFN-68 67 MHz 12 bit 28 I/O 1.71 V 1.89 V SMD/SMT 8 bit + 85 C CY8C3666 Tray
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Datasheet
995In Stock
Min.: 1
Mult.: 1

8 kB 512 B SOIC-16 50 MHz 12 bit 12 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Datasheet
959In Stock
Min.: 1
Mult.: 1

16 kB 512 B SOIC-16 50 MHz 12 bit 12 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 125 C BB50 Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Datasheet
648In Stock
Min.: 1
Mult.: 1

4 kB 512 B SOIC-16 50 MHz 12 bit 12 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 125 C BB50 Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
Datasheet
607In Stock
Min.: 1
Mult.: 1

16 kB 512 B QFN-12 50 MHz 12 bit 9 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C BB50 Cut Tape
Microchip Technology 8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL
Datasheet
130In Stock
480Expected 13/11/2026
Min.: 1
Mult.: 1

8051 4 kB 256 B TQFP-44 20 MHz No ADC 36 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tray

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
Datasheet
6,578In Stock
9,000Expected 01/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

CIP-51 8051 2 kB 256 B QFN-20 25 MHz 12 bit 16 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
Datasheet
4,233In Stock
Min.: 1
Mult.: 1

CIP-51 8051 8 kB 512 B QFN-20 25 MHz 12 bit 16 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 40 C + 85 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
12,398In Stock
Min.: 1
Mult.: 1
: 2,500
16 kB 1.28 kB QFN-20 16 I/O 1.8 V 5.5 V SMD/SMT - 40 C + 85 C Reel, Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Datasheet
1,546In Stock
Min.: 1
Mult.: 1

16 kB 512 B SOIC-16 50 MHz 12 bit 12 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C BB50 Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
Datasheet
3,429In Stock
6,300Expected 09/10/2026
Min.: 1
Mult.: 1

CIP-51 8051 2 kB 256 B QFN-20 25 MHz 12 bit 16 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Datasheet
1,000In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

16 kB 512 B QFN-16 50 MHz 12 bit 12 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C BB50 Reel, Cut Tape, MouseReel
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Datasheet
973In Stock
Min.: 1
Mult.: 1

16 kB 512 B QFN-16 50 MHz 12 bit 12 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C BB50 Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
Datasheet
8,908In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

CIP-51 8051 8 kB 512 B QFN-20 25 MHz 12 bit 16 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Reel, Cut Tape, MouseReel

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
Datasheet
12,671In Stock
73,500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

CIP-51 8051 8 kB 512 B QFN-20 25 MHz 12 bit 16 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C EFM8BB1 Reel, Cut Tape, MouseReel
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
Datasheet
706In Stock
Min.: 1
Mult.: 1

4 kB 512 B QFN-12 50 MHz 12 bit 9 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C BB50 Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
Datasheet
3,031In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

CIP-51 8051 8 kB 512 B 25 MHz 12 bit 17 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 40 C + 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 11/09/2026
Min.: 1
Mult.: 1

CIP-51 8051 8 kB 2.25 kB QFN-20 50 MHz 12 bit 13 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C EFM8UB Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
Datasheet
1,161In Stock
Min.: 1
Mult.: 1

CIP-51 8051 64 kB 4.25 kB QFN-32 25 MHz 10 bit 24 I/O 1.8 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C EFM8SB 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

CIP-51 8051 64 kB 4.25 kB QFN-24 72 MHz 10 bit/12 bit/14 bit 20 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 105 C EFM8LB1 Reel, Cut Tape
Microchip Technology 8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC
Datasheet
504In Stock
Min.: 1
Mult.: 1

8051 2 kB 256 B SOIC-20 24 MHz No ADC 15 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89S Tube
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

CIP-51 8051 64 kB 4.35 kB QFN-32 50 MHz 10 bit, 12 bit 29 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 125 C Tray

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

CIP-51 8051 32 kB 2.3 kB QFN-24 50 MHz 10 bit, 12 bit 20 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 125 C Reel, Cut Tape
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

CIP-51 8051 16 kB 2.25 kB QFN-28 50 MHz 12 bit 22 I/O 2.2 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C EFM8UB Reel, Cut Tape
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

8051 4 kB 128 B SOIC-20 24 MHz No ADC 15 I/O 4 V 6 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube