8051 microcontroller 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 Mounting Style
Package/Case
Core
Program Memory Size
Data Bus Width
ADC Resolution
Maximum Clock Frequency
Number of I/Os
Data RAM Size
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
Qualification
Packaging
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Datasheet
1,070In Stock
Min.: 1
Mult.: 1

SMD/SMT QFP-32 CIP-51 8051 16 kB 8 bit 10 bit, 12 bit 50 MHz 28 I/O 2.3 kB 2.2 V 3.6 V - 40 C + 85 C Tray

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 64 kB 8 bit 10 bit 48 MHz 25 I/O 4.25 kB 3.3 V 3.3 V - 40 C + 85 C Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU
Datasheet
163In Stock
Min.: 1
Mult.: 1
: 1,500

SMD/SMT QFN-32 CIP-51 8051 64 kB 8 bit 10 bit 48 MHz 25 I/O 4.25 kB 3.3 V 3.3 V - 40 C + 85 C Reel, Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
Datasheet
1,570In Stock
Min.: 1
Mult.: 1

SMD/SMT SOIC-16 CIP-51 8051 8 kB 8 bit 12 bit 25 MHz 13 I/O 512 B 2.2 V 3.6 V - 40 C + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU
Datasheet
6In Stock
600Expected 08/09/2026
Min.: 1
Mult.: 1

SMD/SMT QFN-32 16 kB 16 I/O 1.28 kB 1.8 V 5.5 V - 40 C + 85 C Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU
Datasheet
218In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-20 CIP-51 8051 4 kB 8 bit 12 bit 25 MHz 16 I/O 512 B 2.2 V 3.6 V - 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
71In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-16 16 kB 8 bit 12 bit 50 MHz 12 I/O 512 B 1.8 V 5.5 V - 40 C + 125 C Cut Tape
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
200In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-12 16 kB 8 bit 12 bit 50 MHz 9 I/O 512 B 1.8 V 5.5 V - 40 C + 125 C Cut Tape
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
151In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-20 16 kB 16 I/O 1.28 kB 1.8 V 5.5 V - 40 C + 85 C Cut Tape
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
1,452In Stock
Min.: 1
Mult.: 1

SMD/SMT TSSOP-20 16 kB 16 I/O 1.28 kB 1.8 V 5.5 V - 40 C + 85 C Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
Datasheet
294In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-20 16 kB 16 I/O 1.28 kB 1.8 V 5.5 V - 40 C + 85 C Cut Tape
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
402In Stock
Min.: 1
Mult.: 1

SMD/SMT TSSOP-20 16 kB 16 I/O 1.28 kB 1.8 V 5.5 V - 40 C + 85 C Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Datasheet
3,126In Stock
Min.: 1
Mult.: 1

SMD/SMT QSOP-24 CIP-51 8051 16 kB 8 bit 12 bit 50 MHz 21 I/O 2.3 kB 2.2 V 3.6 V - 40 C + 125 C Tube

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 kB 8 bit 12 bit 25 MHz 17 I/O 512 B 1.8 V 3.6 V - 40 C + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
Datasheet
122In Stock
Min.: 1
Mult.: 1

SMD/SMT QSOP-24 CIP-51 8051 16 kB 8 bit 12 bit 50 MHz 17 I/O 2.25 kB 2.2 V 3.6 V - 40 C + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
Datasheet
1,358In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-32 CIP-51 8051 64 kB 8 bit 10 bit, 12 bit 50 MHz 29 I/O 4.35 kB 2.2 V 3.6 V - 40 C + 125 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU
Datasheet
319In Stock
2,400On Order
Min.: 1
Mult.: 1

SMD/SMT QFN-32 16 kB 12 bit 29I/O 1.28 kB 1.8 V 5.5 V - 40 C + 85 C Cut Tape
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
356In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-16 4 kB 8 bit 12 bit 50 MHz 12 I/O 512 B 1.8 V 5.5 V - 40 C + 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 16 I/O 1.28 kB 1.8 V 5.5 V - 40 C + 85 C Cut Tape
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 16 I/O 1.28 kB 1.8 V 5.5 V - 40 C + 85 C Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
Datasheet
297In Stock
Min.: 1
Mult.: 1

SMD/SMT TSSOP-20 16 kB 16 I/O 1.28 kB 1.8 V 5.5 V - 40 C + 85 C Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
Datasheet
20In Stock
Min.: 1
Mult.: 1

SMD/SMT CIP-51 8051 8 kB 8 bit 12 bit 25 MHz 16 I/O 512 B 2.2 V 3.6 V - 40 C + 125 C AEC-Q100 Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
Datasheet
244In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-20 CIP-51 8051 4 kB 8 bit 12 bit 25 MHz 16 I/O 512 B 2.2 V 3.6 V - 40 C + 125 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
Datasheet
281In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-20 CIP-51 8051 16 kB 8 bit 12 bit 50 MHz 13 I/O 2.25 kB 2.2 V 3.6 V - 40 C + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
Datasheet
88In Stock
9,800On Order
Min.: 1
Mult.: 1

SMD/SMT QFN-32 CIP-51 8051 64 kB 8 bit 10 bit, 12 bit 50 MHz 29 I/O 4.35 kB 2.2 V 3.6 V - 40 C + 85 C Tray