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AT89C51RB2
  • AT89C51RB2
  • AT89C51RB2
  • AT89C51RB2

AT89C51RB2

In Production

High-performance, 8-bit microcontroller with 16KB flash. It retains all features of the 80C52 with 256 Bytes of internal RAM, a 9-source 4-level interrupt controller, and three timer/counters. It features a programmable counter array, an XRAM of 1024 bytes, hardware watchdog timer, keyboard interface, SPI interface, versatile serial channel that facilitates multiprocessor communication (EUART), and a speed improvement mechanism (X2 mode).Implementing an external brown-out is recommended to prevent any flash/EEPROM corruption during power-on or power-off....

Microchip Technology AT89C51RB2 Product Info

16 April 2026 0

Parameters

Program Memory Size (KB)

16

RAM

1

Data EEPROM (bytes)

0

Pin Count

44

Operation Voltage Max.(V)

5.5

Operation Voltage Min.(V)

2.7

ADC Resolution Max

0

ADC Channels

0

Zero Cross Detect

False

Number of Comparators

0

SPI

1

I2C

0

Stand alone PWM

0

Low Power

No

Numerically Controlled Oscillator (NCO)

0

Data Signal Modulator (DSM)

0

Description

High-performance, 8-bit microcontroller with 16KB flash. It retains all features of the 80C52 with 256 Bytes of internal RAM, a 9-source 4-level interrupt controller, and three timer/counters.

It features a programmable counter array, an XRAM of 1024 bytes, hardware watchdog timer, keyboard interface, SPI interface, versatile serial channel that facilitates multiprocessor communication (EUART), and a speed improvement mechanism (X2 mode).

Implementing an external brown-out is recommended to prevent any flash/EEPROM corruption during power-on or power-off.

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