8051 microcontroller 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
Maximum Operating Temperature
Qualification
Packaging
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 400Expected 8/25/2026
Min.: 1
Mult.: 1

SMD/SMT QFN-32 16 kB 1.28 kB 12 bit 29I/O 1.8 V 5.5 V + 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 bit 25 MHz 8 kB 512 B 12 bit 16 I/O 2.2 V 3.6 V + 125 C AEC-Q100 Tube
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 1.28 kB 16 I/O 1.8 V 5.5 V + 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
278In Stock
2 520Expected 2/19/2027
Min.: 1
Mult.: 1

SMD/SMT QFN-20 CIP-51 8051 8 bit 50 MHz 16 kB 2.3 kB 12 bit 16 I/O 2.2 V 3.6 V + 85 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
Datasheet
473In Stock
Min.: 1
Mult.: 1

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 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 8 bit 50 MHz 64 kB 4.35 kB 10 bit, 12 bit 29 I/O 2.2 V 3.6 V + 85 C Tray
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 8 bit 50 MHz 16 kB 2.25 kB 12 bit 13 I/O 2.2 V 3.6 V + 85 C Tube

Infineon Technologies 8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V
Datasheet
8In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-68 8051 8 bit 50 MHz 64 kB 8 kB 12 bit 46 I/O 1.71 V 5.5 V + 85 C Tray

Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
Datasheet
36In Stock
Min.: 1
Mult.: 1

SMD/SMT QFP-32 CIP-51 8051 8 bit 72 MHz 16 kB 1.25 kB 10 bit/12 bit/14 bit 28 I/O 2.2 V 3.6 V + 105 C Tray

Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
Datasheet
134In Stock
Min.: 1
Mult.: 1

SMD/SMT QFP-32 CIP-51 8051 8 bit 72 MHz 16 kB 1.25 kB 10 bit/12 bit/14 bit 28 I/O 2.2 V 3.6 V + 105 C Tray

Infineon Technologies 8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V
Datasheet
6In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-68 8051 8 bit 50 MHz 64 kB 8 kB 12 bit 48 I/O 1.71 V 5.5 V + 85 C Tray
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Datasheet
179In Stock
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 16 I/O 2.2 V 3.6 V + 125 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
1 069In Stock
600Expected 8/18/2026
Min.: 1
Mult.: 1

SMD/SMT CSP-16 CIP-51 8051 8 bit 25 MHz 8 kB 512 B 12 bit 13 I/O 1.8 V 3.6 V + 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
82In Stock
2 520Expected 9/4/2026
Min.: 1
Mult.: 1

SMD/SMT QFN-20 CIP-51 8051 8 bit 50 MHz 16 kB 2.25 kB 12 bit 16 I/O 2.2 V 3.6 V + 125 C AEC-Q100 Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
Datasheet
237In Stock
500Expected 1/22/2027
Min.: 1
Mult.: 1
: 500

SMD/SMT QFP-32 CIP-51 8051 8 bit 72 MHz 64 kB 4.25 kB 10 bit/12 bit/14 bit 28 I/O 2.2 V 3.6 V + 105 C Reel, Cut Tape

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
Datasheet
797In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-32 CIP-51 8051 8 bit 25 MHz 32 kB 4.25 kB 10 bit 24 I/O 1.8 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
63In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

SMD/SMT QFP-48 CIP-51 8051 8 bit 48 MHz 64 kB 4.25 kB 10 bit 40 I/O 2.65 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
Datasheet
53In Stock
Min.: 1
Mult.: 1

SMD/SMT QSOP-24 CIP-51 8051 8 bit 72 MHz 16 kB 1.25 kB 10 bit/12 bit/14 bit 21 I/O 2.2 V 3.6 V + 105 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
Datasheet
5In Stock
Min.: 1
Mult.: 1

SMD/SMT QFP-32 CIP-51 8051 8 bit 50 MHz 64 kB 4.35 kB 10 bit, 12 bit 28 I/O 2.2 V 3.6 V + 125 C Tray
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
Datasheet
52In Stock
Min.: 1
Mult.: 1

SMD/SMT QSOP-24 CIP-51 8051 8 bit 72 MHz 16 kB 1.25 kB 10 bit/12 bit/14 bit 21 I/O 2.2 V 3.6 V + 105 C Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
Datasheet
81In Stock
Min.: 1
Mult.: 1
: 1 500

SMD/SMT CIP-51 8051 8 bit 25 MHz 32 kB 4.25 kB 10 bit 24 I/O 1.8 V 3.6 V + 85 C Reel, Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU
Datasheet
257In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-24 CIP-51 8051 8 bit 72 MHz 32 kB 2.25 kB 10 bit/12 bit/14 bit 20 I/O 2.2 V 3.6 V + 105 C Tube

Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Datasheet
475In Stock
Min.: 1
Mult.: 1

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 Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU
Datasheet
12In Stock
Min.: 1
Mult.: 1
: 1 500

SMD/SMT QFN-24 CIP-51 8051 8 bit 72 MHz 32 kB 2.25 kB 10 bit/12 bit/14 bit 20 I/O 2.2 V 3.6 V + 105 C Reel, Cut Tape
NXP Semiconductors ARM Microcontrollers - MCU Scalable Mainstream 32-bit Microcontroller (MCU) based on ARM Cortex-M3 Core
Datasheet
830In Stock
1 190Expected 11/16/2026
Min.: 1
Mult.: 1

SMD/SMT LQFP-80 ARM Cortex M3 32 bit 100 MHz 128 kB 32 kB 12 bit 52 I/O 2.4 V 3.6 V + 85 C Tray