AT80Cx 8-bit ROMless Microcontrollers

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Manufacturer : Atmel
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These high performance 8-bit microcontrollers are ROMless versions of the popular 80C51 CMOS single chip 8-bit microcontroller. Enhanced features of these devices include: X2 speed improvement, dual data pointer, 4 level interrupt priority system, power-off flag, ONCE mode and ALE disabling.

4x 8-bit I/O ports
High speed architecture
Asynchronous port reset
Full duplex enhanced UART
Automatic address recognition
Power control modes including idle mode
Operating temperature range –40°C to +85°C
DIL-40 package

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Datasheets

Manufacturer Part #: AT80C31X2-3CSUM

At80c31x2-3csum 8bit Mcu 8051 Romless

73-4364

£0.663

normally despatched 1-2 weeks

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10+

100+

Manufacturer Part #: AT80C51RD2-3CSU

C51 Romless Plcc44 3 - 5v - C51rd2 Romless Pdil40 Com 5v Green

73-5048

£2.50

£1.76

£1.46

discontinued

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Technical Specification

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Device	RAM (bytes)	V_CC (V)	Frequency max. (MHz)	Order code
AT80C31X2-3CSUL	128	2.7 to 5.5	30	73-4362
AT80C31X2-3CSUM	128	5 ±10%	40	73-4364
AT80C32X2-3CSUM	256	5 ±10%	40	73-4368
AT80C51RD2-3CSUM	1280	2.7 to 5.5	40	73-5408