AT89C51 8-Bit MCUs

Microchip Technology AT89C51 8-Bit MCUs offer low-power and high-performance with up to 32KB of flash programmable ROM and 512 bytes of RAM. The MCUs use Microchip high-density nonvolatile memory technology. The devices are compatible with the industry-standard 80C51 and 80C52 instruction set and pinout. On-chip flash allows the program memory to be user programmed by a conventional nonvolatile memory programmer. This versatile 8-bit CPU with flash provides a flexible and cost-effective solution for many embedded control applications.

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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
Packaging
Microchip Technology 8-bit Microcontrollers - MCU CAN C51 64KFLASH TQFP44 CANBOOT GREEN
Datasheet
1,726In Stock
$15.00
$13.75
$12.74
$12.73
View
Min.: 1
Mult.: 1
8051 64 kB 2 kB TQFP-44 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 C51RC2 FLASH 32k TQFP44 Ind 5V GREEN
Datasheet
2,782In Stock
$12.50
$11.46
$10.39
$10.32
Min.: 1
Mult.: 1
8051 32 kB 1.25 kB TQFP-44 60 MHz No ADC 32 I/O 2.7 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Tray

Microchip Technology 8-bit Microcontrollers - MCU C51IC2 32K FLASH I2C 32KHz 3V
Datasheet
460In Stock
$12.17
$11.25
$10.95
$10.72
$10.19
Min.: 1
Mult.: 1
8051 32 kB 1.25 kB PLCC-44 60 MHz No ADC 34 I/O 2.7 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube

Microchip Technology 8-bit Microcontrollers - MCU 16K Flash ADC
Datasheet
1,019In Stock
$12.51
$12.25
$11.46
$10.38
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 32K FLASH 4.0 TO 5.5V
Datasheet
3,742In Stock
$4.28
$3.93
$3.79
$3.78
Min.: 1
Mult.: 1
8051 32 kB 512 B TQFP-44 24 MHz No ADC 32 I/O 4 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tray
Microchip Technology 8-bit Microcontrollers - MCU MCUs AT89x, 64KB Flash, TQFP-44
Datasheet
2,059In Stock
Cut Tape
$11.67
$11.37
$10.49
Reel
$9.64
Min.: 1
Mult.: 1
: 2,000
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 Reel, Cut Tape
Microchip Technology 8-bit Microcontrollers - MCU C51IC2 32Kf I2C 32KHz TQFP44 I. 5V GREEN
Datasheet
191In Stock
$11.38
$10.43
$9.47
$9.45
Min.: 1
Mult.: 1
8051 32 kB 1.25 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 64K FLASH 32KHz 3.5-5V Ind.
Datasheet
429In Stock
$17.23
$15.79
$14.31
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 C51RD2 ROMless TQFP44 Ind 5V GREEN
Datasheet
1,929In Stock
$5.41
$4.96
$4.50
Min.: 1
Mult.: 1
8051 1.25 kB TQFP-44 40 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 C51RB2 FLASH 16k TQFP44 ind 3V GREEN
Datasheet
31In Stock
$10.57
$9.70
$8.77
$8.76
Min.: 1
Mult.: 1
8051 16 kB 1.25 kB TQFP-44 60 MHz No ADC 32 I/O 2.7 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Tray

Microchip Technology 8-bit Microcontrollers - MCU C51RB2 FLASH 3V 16k Ind
Datasheet
286In Stock
$11.08
$10.24
$10.19
$9.83
View
Min.: 1
Mult.: 1
8051 16 kB 1.25 kB PLCC-44 60 MHz No ADC 32 I/O 2.7 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube
Microchip Technology 8-bit Microcontrollers - MCU C51 16K Flash ADC
Datasheet
95In Stock
$11.23
$11.17
$10.69
$10.68
Min.: 1
Mult.: 1
8051 16 kB 512 B VQFP-32 40 MHz 10 bit 20 I/O 3 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tray
Microchip Technology 8-bit Microcontrollers - MCU C5130A 16K Flash USB 5V
Datasheet
501In Stock
$10.70
$10.02
$10.01
$9.76
Quote
Min.: 1
Mult.: 1
8051 16 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 CAN 64K FLASH CAN BOOT
Datasheet
456In Stock
Cut Tape
$15.75
$13.71
$13.64
$13.56
Reel
$13.08
View
MouseReel Available
Min.: 1
Mult.: 1
: 500
8051 64 kB 2.25 kB PLCC-44 40 MHz 36 I/O 3 V 5.5 V SMD/SMT 8 bit Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU C51ED2 64kF TQFP44 3-5.5V Ind Reel GREEN
Datasheet
395In Stock
Cut Tape
$13.60
$13.26
$13.25
$13.23
Reel
$11.29
Min.: 1
Mult.: 1
: 2,000
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 Reel, Cut Tape

Microchip Technology 8-bit Microcontrollers - MCU CAN C51 64K FLASH UAR BOOT
Datasheet
134In Stock
$15.64
$14.47
$13.90
$13.08
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 Bootloader CAN
Datasheet
105In Stock
$13.02
$11.90
$11.46
$10.80
View
Min.: 1
Mult.: 1
8051 32 kB 1.2 kB PLCC-44 40 MHz 10 bit 34 I/O 3 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C 89C Tube
Microchip Technology 8-bit Microcontrollers - MCU C51IC2 32Kf I2C 32KHz TQFP44 I. 3V GREEN
Datasheet
160In Stock
$11.67
$10.69
$9.70
Min.: 1
Mult.: 1
8051 32 kB 1.25 kB TQFP-44 60 MHz No ADC 34 I/O 2.7 V 3.6 V SMD/SMT 8 bit - 40 C + 85 C Tray

Microchip Technology 8-bit Microcontrollers - MCU 64kB Flash 2048B RAM 2.7V-5.5V
Datasheet
2,231In Stock
$12.25
$11.25
$10.19
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 CAN TQFP44 TRAY I. Bootloader UART GREEN
Datasheet
2,892In Stock
$12.34
$11.30
$10.24
Min.: 1
Mult.: 1
8051 32 kB 1.25 kB 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 CAN C51 64KFLASH TQFP44 UARBOOT GREEN
Datasheet
2,193In Stock
$15.00
$13.75
$12.46
Min.: 1
Mult.: 1
8051 64 kB 2 kB TQFP-44 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 C51ID2 64kF 32KHz TQFP44 3-5.5V I. GREEN
Datasheet
1,587In Stock
$16.43
$15.06
$13.65
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 C51AC2 32kF ADC EEP TQFP44 ind 5V GREEN
Datasheet
2,912In Stock
$13.34
$12.24
$11.08
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 C51 16K Flash ADC
Datasheet
396In Stock
$13.15
$12.05
$10.89
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 C5130A 16K Flash USB 5V
Datasheet
166In Stock
$12.48
$11.44
$11.30
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