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 Keybrd & Embedded Cntlr
Datasheet
231In Stock
Min.: 1
Mult.: 1

8051 64 kB VTQFP-128 32 MHz 10 bit 56 I/O 3.3 V 3.3 V SMD/SMT 8 bit 0 C + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU Sngl-Cycle 8051 IND 2.4-3.6V 32K ISP FL
Datasheet
315In Stock
Min.: 1
Mult.: 1

8051 32 kB 4.25 kB VQFN-44 20 MHz 10 bit 38 I/O 2.4 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Tray

Microchip Technology 8-bit Microcontrollers - MCU C51RB2 16K FLASH 5V COM
Datasheet
2,321In Stock
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 8kB Flash 256B RAM 33MHz 4.0V-5.5V
Datasheet
5,919In Stock
7,260Expected 30/11/2026
Min.: 1
Mult.: 1

8051 8 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 89S Tube
Microchip Technology 8-bit Microcontrollers - MCU C51ID2 64kF 32KHz TQFP44 3-5.5V I. GREEN
Datasheet
1,910In Stock
Min.: 1
Mult.: 1

8051 64 kB 2 kB TQFP-44 60 MHz No ADC 34 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tray

Microchip Technology 8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Datasheet
3,248In Stock
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
Infineon Technologies 8-bit Microcontrollers - MCU PSoC 32KB FLASH 1.7-5.5V 25 I/O
Datasheet
2,655In Stock
Min.: 1
Mult.: 1
: 2,000

8051 QFN-48 SMD/SMT 8 bit CY8C3245 Reel, Cut Tape
Infineon Technologies 8-bit Microcontrollers - MCU 64K Flash 50MHz 8051 1.71V to 5.5V
Datasheet
2,600In Stock
Min.: 1
Mult.: 1

8051 64 kB 8 kB QFN-48 50 MHz 12 bit 31 I/O 1.71 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C CY8C3446 Tray

Lumissil 8-bit Microcontrollers - MCU MCU with 2KB SRAM and 32Kx16 ECC E-Flash, QFN-24 (4mm x 4mm) 2,500In Stock
Min.: 1
Mult.: 1
: 2,500

8051 32 KB 2 KB WQFN-24 25 MHz 20 I/O 2.5 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Reel, Cut Tape
Microchip Technology 8-bit Microcontrollers - MCU C51AC2 32kF ADC EEP TQFP44 ind 5V GREEN
Datasheet
3,052In Stock
Min.: 1
Mult.: 1

8051 32 kB 128 B TQFP-44 40 MHz 10 bit 34 I/O 3 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tray
Microchip Technology 8-bit Microcontrollers - MCU 20 PINS UART 2K FLASH-24MHZ 4-5.5V
Datasheet
2,559In Stock
Min.: 1
Mult.: 1

8051 2 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

Microchip Technology 8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V
Datasheet
844In Stock
1,404Expected 26/10/2026
Min.: 1
Mult.: 1

8051 4 kB 128 B PDIP-20 24 MHz No ADC 15 I/O 4 V 6 V Through Hole 8 bit - 40 C + 85 C 89C Tube
Microchip Technology 8-bit Microcontrollers - MCU C5130A 16K Flash USB 5V
Datasheet
166In Stock
Min.: 1
Mult.: 1

8051 16 kB 1 kB VQFP-64 48 MHz No ADC 34 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tray

Microchip Technology 8-bit Microcontrollers - MCU C51AC3 64K FLASHADC EEP 5V
Datasheet
267In Stock
Min.: 1
Mult.: 1

8051 64 kB 2 kB PLCC-44 60 MHz 10 bit 36 I/O 3 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube
Microchip Technology 8-bit Microcontrollers - MCU CAN C51 64K FLASH UAR BOOT
Datasheet
421In Stock
Min.: 1
Mult.: 1

8051 64 kB 2 kB VQFP-64 60 MHz 10 bit 36 I/O 3 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tray
Microchip Technology 8-bit Microcontrollers - MCU C51ED2 64K FLASH 3-5.5V Ind
Datasheet
880In Stock
Min.: 1
Mult.: 1

8051 64 kB 2 kB PLCC-68 60 MHz No ADC 48 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
Datasheet
397In Stock
690Expected 05/11/2026
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 C51RD2 64K FLASH 3-5.5V
Datasheet
428In Stock
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 64kB Flash 2048B RAM 2.7V-5.5V
Datasheet
595In Stock
2,079Expected 10/09/2026
Min.: 1
Mult.: 1

8051 64 kB 2 kB PLCC-44 60 MHz 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 SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V
Datasheet
1,046In Stock
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
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
1,670In Stock
1,510Expected 27/11/2026
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
343In Stock
2,781Expected 09/09/2026
Min.: 1
Mult.: 1

8051 12 kB 256 B PLCC-44 24 MHz No ADC 32 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89S Tube

Microchip Technology 8-bit Microcontrollers - MCU MCU 8-Bit HI Perform ROMless 3-5V
Datasheet
660In Stock
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
434In Stock
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