8051 Core 8-bit Microcontrollers - MCU

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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
Qualification
Packaging

Microchip Technology 8-bit Microcontrollers - MCU C51IC2 32K FLASH I2C 32KHz 5V
Datasheet
377In Stock
$11.45
$10.50
$9.49
Min.: 1
Mult.: 1
8051 32 kB 1.25 kB PLCC-44 60 MHz No ADC 34 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube

Microchip Technology 8-bit Microcontrollers - MCU 64K FLASH 32KHz 3.5-5V Ind.
Datasheet
365In Stock
$16.47
$15.09
$13.68
Min.: 1
Mult.: 1
8051 64 kB 1.75 kB PLCC-44 60 MHz No ADC 34 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube

Microchip Technology 8-bit Microcontrollers - MCU C51RB2 16K FLASH 5V COM
Datasheet
584In Stock
2,646Expected 11/6/2026
$9.76
$8.96
$8.13
Min.: 1
Mult.: 1
8051 16 kB 1.25 kB PLCC-44 60 MHz No ADC 32 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube

Microchip Technology 8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V - 24MHZ 5V
Datasheet
699In Stock
$6.06
$5.58
$5.51
Min.: 1
Mult.: 1
8051 32 kB 512 B PLCC-44 24 MHz No ADC 32 I/O 4 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube
Microchip Technology 8-bit Microcontrollers - MCU 32K FLASH 4.0 TO 5.5V
Datasheet
999In Stock
$6.72
$6.18
$6.08
Min.: 1
Mult.: 1
8051 32 kB 512 B PDIP-40 24 MHz No ADC 32 I/O 4 V 5.5 V Through Hole 8 bit - 40 C + 85 C 89C Tube
Microchip Technology 8-bit Microcontrollers - MCU 32kB Flash 1280B RAM 2.7V-5.5V
Datasheet
201In Stock
360Expected 11/20/2026
$12.25
$11.25
$10.18
Min.: 1
Mult.: 1
8051 32 kB 1.25 kB PDIP-40 60 MHz No ADC 32 I/O 2.7 V 5.5 V Through Hole 8 bit - 40 C + 85 C 89C Tube

Microchip Technology 8-bit Microcontrollers - MCU C51RD2 64K FLASH 3-5.5V
Datasheet
426In Stock
Cut Tape
$11.99
$11.66
Reel
$9.96
Min.: 1
Mult.: 1
: 500
8051 64 kB 2 kB PLCC-44 60 MHz 34 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Reel, Cut Tape

Microchip Technology 8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V
Datasheet
1,225In Stock
$3.50
$3.20
$3.17
Min.: 1
Mult.: 1
8051 4 kB 256 B PDIP-20 20 MHz No ADC 15 I/O 2.4 V 5.5 V Through Hole 8 bit - 40 C + 85 C 89LP Tube
Microchip Technology 8-bit Microcontrollers - MCU SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V
Datasheet
905In Stock
$3.20
$2.93
$2.64
Min.: 1
Mult.: 1
8051 4 kB 256 B SOIC-20 20 MHz No ADC 15 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89LP Tube

Microchip Technology 8-bit Microcontrollers - MCU 8kB Flash 256B RAM 33MHz 2.7V-4.0V
Datasheet
1,098In Stock
$4.94
$4.52
$4.49
Min.: 1
Mult.: 1
8051 8 kB 256 B PLCC-44 16 MHz No ADC 32 I/O 2.7 V 4 V SMD/SMT 8 bit - 40 C + 85 C 89LS Tube
Microchip Technology 8-bit Microcontrollers - MCU 4kB Flash 128B RAM 33MHz 4.0V-5.5V
Datasheet
2,229In Stock
$4.32
$3.97
$3.59
Min.: 1
Mult.: 1
8051 4 kB 128 B PDIP-40 24 MHz No ADC 32 I/O 4 V 5.5 V Through Hole 8 bit - 40 C + 85 C 89S Tube
Microchip Technology 8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V
Datasheet
4,442In Stock
$3.51
$3.24
$2.91
Min.: 1
Mult.: 1
8051 12 kB 256 B TQFP-44 24 MHz No ADC 32 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89S Tray
Microchip Technology 8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V
Datasheet
677In Stock
$5.79
$5.32
$5.25
Min.: 1
Mult.: 1
8051 12 kB 256 B PDIP-40 24 MHz No ADC 32 I/O 2.7 V 5.5 V Through Hole 8 bit - 40 C + 85 C 89S Tube

Microchip Technology 8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V
Datasheet
634In Stock
Cut Tape
$5.99
Reel
$5.02
MouseReel Available
Min.: 1
Mult.: 1
: 500
8051 1 kB 1.25 kB PLCC-44 40 MHz No ADC 32 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 80C Reel, Cut Tape, MouseReel

Microchip Technology 8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V
Datasheet
424In Stock
$5.33
$4.91
$4.82
Min.: 1
Mult.: 1
8051 1 kB 1.25 kB PLCC-44 40 MHz No ADC 32 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 80C Tube
Microchip Technology 8-bit Microcontrollers - MCU C51AC3 64kF ADC EEP TQFP44 ind 5V GREEN
Datasheet
296In Stock
$13.30
$12.18
$11.05
Min.: 1
Mult.: 1
8051 64 kB 128 B TQFP-64 60 MHz 10 bit 36 I/O 3 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51ED2 64kF TQFP44 3-5.5V Ind GREEN
Datasheet
1,073In Stock
$12.75
$11.70
$10.60
Min.: 1
Mult.: 1
8051 64 kB 2 kB TQFP-44 60 MHz 34 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51RB2 FLASH 16k TQFP44 COM 5V GREEN
Datasheet
330In Stock
$9.31
$8.53
$7.72
Min.: 1
Mult.: 1
8051 16 kB 1.25 kB TQFP-44 60 MHz No ADC 32 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51RD2 64kF TQFP44 3-5.5V Ind. GREEN
Datasheet
281In Stock
$11.41
$10.48
$9.49
Min.: 1
Mult.: 1
8051 64 kB 2 kB TQFP-44 60 MHz 34 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU 20K FLASH - 24MHZ IND TEMP 5V
Datasheet
1,662In Stock
$6.70
$6.15
$6.07
Min.: 1
Mult.: 1
8051 20 kB 256 B PDIP-40 24 MHz No ADC 32 I/O 4 V 5.5 V Through Hole 8 bit - 40 C + 85 C AT89C55WD Tube

Microchip Technology 8-bit Microcontrollers - MCU Single-Cycle 805124K ISP Flash,2.4-5.5V
Datasheet
436In Stock
$5.24
$4.81
$4.36
Min.: 1
Mult.: 1
8051 24 kB 256 B PLCC-44 20 MHz 10 bit 40 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU Single-Cycle 805132K ISP Flash,2.4-5.5V
Datasheet
412In Stock
$5.82
$5.33
$4.82
Min.: 1
Mult.: 1
8051 32 kB 256 B PLCC-44 20 MHz 10 bit 40 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tube

Microchip Technology 8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Datasheet
278In Stock
$7.74
$7.10
$6.99
Min.: 1
Mult.: 1
8051 64 kB 256 B PLCC-44 20 MHz 10 bit 40 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tube
Microchip Technology 8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash MCU
Datasheet
2,754In Stock
$2.24
$2.03
$1.85
Min.: 1
Mult.: 1
8051 8 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
Microchip Technology 8-bit Microcontrollers - MCU 24 MHZ, TQFP44, IND TEMP, GREEN
Datasheet
2,453In Stock
Cut Tape
$3.15
$3.03
Reel
$2.60
MouseReel Available
Min.: 1
Mult.: 1
: 2,000
8051 8 kB 256 B TQFP-44 24 MHz No ADC 32 I/O 4 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Reel, Cut Tape, MouseReel