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Description

AT89C51RD2, AT89C51ED2

AT89C51RD2, AT89C51ED2 Errata

(file size: 50939, 4 pages, revision E, updated: 08/2007)

AT89C51RD2/ED2

AT89C51RD2/ED2 Complete

(file size: 1448054, 137 pages, revision K, updated: 05/2008)
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High performance CMOS flash version of the 80C51 CMOS single-chip 8-bit microcontroller with a 64-KB flash memory block for code and for data. The flash memory can be programmed in parallel or serial mode using ISP or software. The programming voltage is internally generated from the standard VCC pin.

This device retains all of the features of the Atmel 80C52 and adds a programmable counter array, 1792 bytes of XRAM, hardware watchdog timer, SPI interface, keyboard, versatile serial channel that facilitates multiprocessor communication (EUART), and a speed improvement mechanism (X2 Mode).

Key Parameters

Parameter
Value

Flash (Kbytes):

64 Kbytes

Pin Count:

44

Max. Operating Freq. (MHz):

60 MHz

CPU:

8051-12C

Max I/O Pins:

32

SPI:

1

UART:

1

SRAM (Kbytes):

2

Self Program Memory:

API

Operating Voltage (Vcc):

2.7 to 5.5

 

Ordering Codes

Ordering Code Package Speed Power Supply Operational Range Comment Buy Online Samples
AT89C51RD2-SLRUM PLCC SL 44 Industrial (A) (-40°C to 85°C) Buy Request
AT89C51RD2-SLSUM PLCC SL 44 Industrial (A) (-40°C to 85°C) Buy Request
AT89C51RD2-RLRUM LQFP RL 44 Industrial (A) (-40°C to 85°C) Buy Request
AT89C51RD2-RLTUM LQFP RL 44 Industrial (A) (-40°C to 85°C) Buy Request