8051 microcontroller Microcontrollers - MCU

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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
Infineon Technologies 8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V
Datasheet
1.094In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-48 8051 64 kB 8 bit 12 bit 50 MHz 31 I/O 8 kB 1.71 V 5.5 V - 40 C + 85 C Tray
Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
Datasheet
1.221In Stock
Min.: 1
Mult.: 1
: 1.500

SMD/SMT QFN-20 CIP-51 8051 8 kB 8 bit 12 bit 25 MHz 16 I/O 512 B 1.8 V 3.6 V - 40 C + 85 C AEC-Q100 Reel, Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Datasheet
457In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-32 CIP-51 8051 32 kB 8 bit 10 bit, 12 bit 50 MHz 29 I/O 2.3 kB 2.2 V 3.6 V - 40 C + 85 C Tray
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
Lead-Time 24 Weeks
Min.: 1
Mult.: 1
: 2.500

SMD/SMT QFN-20 16 kB 16 I/O 1.28 kB 1.8 V 5.5 V - 40 C + 85 C Reel, Cut Tape
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Datasheet
502In Stock
Min.: 1
Mult.: 1
: 500

SMD/SMT QFP-32 CIP-51 8051 32 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 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
16In 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 + 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
2.005In Stock
Min.: 1
Mult.: 1

SMD/SMT QSOP-24 CIP-51 8051 64 kB 8 bit 10 bit/12 bit/14 bit 72 MHz 21 I/O 4.25 kB 2.2 V 3.6 V - 40 C + 105 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
Datasheet
92In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-24 CIP-51 8051 16 kB 8 bit 10 bit/12 bit/14 bit 72 MHz 20 I/O 1.25 kB 2.2 V 3.6 V - 40 C + 105 C Tube
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
Datasheet
630In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-32 CIP-51 8051 16 kB 8 bit 10 bit/12 bit/14 bit 72 MHz 29 I/O 1.25 kB 2.2 V 3.6 V - 40 C + 105 C Tray
Infineon Technologies 8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
Datasheet
195In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-48 8051 32 kB 8 bit 12 bit 50 MHz 31 I/O 4 kB 1.71 V 5.5 V - 40 C + 85 C Tray
Silicon Labs 8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU
Datasheet
813In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-24 CIP-51 8051 32 kB 8 bit 10 bit/12 bit/14 bit 72 MHz 20 I/O 2.25 kB 2.2 V 3.6 V - 40 C + 105 C Tube
Microchip Technology 8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL
Datasheet
315In Stock
Min.: 1
Mult.: 1

SMD/SMT VQFN-44 8051 32 kB 8 bit 10 bit 20 MHz 38 I/O 4.25 kB 2.4 V 3.6 V - 40 C + 85 C Tray
Infineon Technologies 8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V
Datasheet
2.600In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-48 8051 64 kB 8 bit 12 bit 50 MHz 31 I/O 8 kB 1.71 V 5.5 V - 40 C + 85 C Tray

Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
Datasheet
61.601In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

SMD/SMT QFN-20 CIP-51 8051 8 kB 8 bit 12 bit 25 MHz 16 I/O 512 B 2.2 V 3.6 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU
Datasheet
69In Stock
3.040Expected 28/07/2026
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 8 kB 8 bit No ADC 20 MHz 36 I/O 256 B 2.4 V 5.5 V - 40 C + 85 C Tray
Silicon Labs 8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
Datasheet
10.835In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-12 8 kB 8 bit 12 bit 50 MHz 9 I/O 512 B 1.8 V 5.5 V - 40 C + 85 C Cut Tape
Infineon Technologies 8-bit Microcontrollers - MCU 8051 8bit 67MHz 64KB
Datasheet
574In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

SMD/SMT TQFP-100 8051 64 kB 8 bit 20 bit 67 MHz 72 I/O 8 kB 1.71 V 1.89 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V
Datasheet
693In Stock
Min.: 1
Mult.: 1

Through Hole PDIP-40 8051 32 kB 8 bit No ADC 24 MHz 32 I/O 512 B 4 V 5.5 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
9.677In Stock
Min.: 1
Mult.: 1
: 500

SMD/SMT QFP-32 CIP-51 8051 64 kB 8 bit 10 bit, 12 bit 50 MHz 28 I/O 4.35 kB 2.2 V 3.6 V - 40 C + 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
62.467In Stock
58.500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

SMD/SMT QFN-20 CIP-51 8051 16 kB 8 bit 12 bit 50 MHz 16 I/O 2.3 kB 2.2 V 3.6 V - 40 C + 85 C Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU Single-Cycle 8051 64K ISP Flash
Datasheet
437In Stock
Min.: 1
Mult.: 1

SMD/SMT TQFP-44 8051 64 kB 8 bit 10 bit 20 MHz 38 I/O 4.25 kB 2.4 V 3.6 V - 40 C + 85 C Tray
Infineon Technologies 8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
Datasheet
449In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-48 8051 32 kB 8 bit 12 bit 50 MHz 29 I/O 4 kB 1.71 V 5.5 V - 40 C + 85 C Tray

Infineon Technologies 8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
Datasheet
147In Stock
Min.: 1
Mult.: 1

SMD/SMT QFN-68 8051 64 kB 8 bit 12 bit 67 MHz 28 I/O 8 kB 1.71 V 1.89 V + 85 C Tray
Infineon Technologies 8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
Datasheet
237In Stock
Min.: 1
Mult.: 1

SMD/SMT SSOP-48 8051 64 kB 8 bit 20 bit 67 MHz 29 I/O 8 kB 1.71 V 1.89 V - 40 C + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL
Datasheet
130In Stock
480Expected 28/09/2026
Min.: 1
Mult.: 1

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