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 Single-Cycle 805132K ISP Flash,2.4-5.5V
Datasheet
593In Stock
Min.: 1
Mult.: 1

8051 32 kB 256 B TQFP-44 20 MHz 10 bit 40 I/O 2.4 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
972In Stock
Min.: 1
Mult.: 1

8051 64 kB 256 B TQFP-44 20 MHz 10 bit 40 I/O 2.4 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C Tray
Silicon Labs 8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU
Datasheet
685In Stock
3.000Expected 11/27/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

8051 16 kB 1.25 kB QFN-28 25 MHz 10 bit 25 I/O 2.7 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C C8051F311 Reel, Cut Tape, MouseReel
Silicon Labs 8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU
Datasheet
1.057In Stock
1.533Expected 11/20/2026
Min.: 1
Mult.: 1

8051 32 kB 2.31 kB QFN-28 50 MHz 12 bit 20 I/O 2 V 5.25 V SMD/SMT 8 bit - 40 C + 85 C C8051F411 Tube
Microchip Technology 8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V
Datasheet
615In Stock
Min.: 1
Mult.: 1

8051 4 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 C5130A 32K Flash USB
Datasheet
130In Stock
Min.: 1
Mult.: 1

8051 32 kB 1 kB QFN-32 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 C5131A 32K Flash USB Ind 3V
Datasheet
21In Stock
Min.: 1
Mult.: 1

8051 32 kB 1 kB SOIC-28 48 MHz No ADC 18 I/O 3 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube

Microchip Technology 8-bit Microcontrollers - MCU C51-CAN Bootloader CAN
Datasheet
28In Stock
Min.: 1
Mult.: 1

8051 16 kB 512 B PLCC-28 40 MHz 10 bit 20 I/O 3 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube

Microchip Technology 8-bit Microcontrollers - MCU CTRL Bootloader CAN
Datasheet
43In Stock
Min.: 1
Mult.: 1

8051 16 kB 512 B SOIC-28 40 MHz 10 bit 20 I/O 3 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube

Microchip Technology 8-bit Microcontrollers - MCU CTRL Bootloader UART
Datasheet
13In Stock
Min.: 1
Mult.: 1

8051 16 kB 512 B PLCC-28 40 MHz 10 bit 20 I/O 3 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube

Microchip Technology 8-bit Microcontrollers - MCU CTRL Boodloader UART
Datasheet
54In Stock
Min.: 1
Mult.: 1

8051 16 kB 512 B SOIC-28 40 MHz 10 bit 20 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 CAN BOOT
Datasheet
99In 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 64kB Flash 2048B RAM 2.7V-5.5V
Datasheet
13In Stock
1.107Expected 9/10/2026
Min.: 1
Mult.: 1

8051 64 kB 2 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 32K FLASH 4.0 TO 5.5V - 24MHZ 5V
Datasheet
186In Stock
621On Order
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 32kB Flash 1280B RAM 2.7V-5.5V
Datasheet
63In Stock
240Expected 9/17/2026
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 C51RC2 32K FLASH 5V Com
Datasheet
151In Stock
Min.: 1
Mult.: 1

8051 32 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 20K FLASH - 24MHZ
Datasheet
61In Stock
Min.: 1
Mult.: 1

8051 20 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 AT89C55WD Tray

Microchip Technology 8-bit Microcontrollers - MCU SINGLE CYCLE 2K FLASH-20MHZ 2.4-5.5V
Datasheet
8In Stock
Min.: 1
Mult.: 1

8051 2 kB 256 B TSSOP-20 20 MHz 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 SINGLE CYCLE 4K FLASH-20MHZ 2.4-5.5V
Datasheet
239In Stock
1.134Expected 9/17/2026
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 2K FLASH 24MHZ SOIC
Datasheet
504In Stock
Min.: 1
Mult.: 1

8051 2 kB 256 B SOIC-20 24 MHz No ADC 15 I/O 2.7 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89S Tube
Microchip Technology 8-bit Microcontrollers - MCU 12kB Flash 256B RAM 2.7V-5.5V
Datasheet
31In Stock
4.960On Order
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 MCU 8-BIT AT80 CISC ROMless 3-5V
Datasheet
190In Stock
300Expected 9/18/2026
Min.: 1
Mult.: 1

8051 0 B 1.25 kB PDIP-40 40 MHz No ADC 32 I/O 2.7 V 5.5 V Through Hole 8 bit - 40 C + 85 C 80C Tube
Microchip Technology 8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL
Datasheet
130In Stock
480Expected 10/23/2026
Min.: 1
Mult.: 1

8051 4 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 64KB 20MHz 2.4V-5.5V
Datasheet
143In Stock
135On Order
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 64KB 20MHz 2.4V-5.5V
Datasheet
59In Stock
Min.: 1
Mult.: 1

8051 64 kB 256 B PDIP-40 20 MHz 10 bit 40 I/O 2.4 V 5.5 V Through Hole 8 bit - 40 C + 85 C Tube