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Home > Integrated Circuits > Microcontrollers > Atmel

AT89C51-24PC - AT89C51 40-Pin 24MHz 4kb 8-bit Microcontroller Technical Data - Buy AT89C51-24PC

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AT89C51-24PC - AT89C51 40-Pin 24MHz 4kb 8-bit Microcontroller

Features

Compatible with MCS-51 Products

4K Bytes of In-System Reprogrammable Flash Memory

Fully Static Operation: 0 Hz to 24 MHz

Three-level Program Memory Lock

128 x 8-bit Internal RAM

32 Programmable I/O Lines

Two 16-bit Timer/Counters

Six Interrupt Sources

Programmable Serial Channel

Low-power Idle and Power-down Modes

40-pin DIP

Pin Description

Pin Number	Description
1 - 8	P1.0 - P1.7 - Port 1
9	RST - Reset
10 - 17	P3.0 - P3.7 - Port 3
18	XTAL2 - Crystal
19	XTAL1 - Crystal
20	GND - Ground
21 - 28	P2.0 - P2.7 - Port 2
29	PSEN - Program Store Enable
30	ALE - Address Latch Enable
31	EA - External Access Enable
32 - 39	P0.7 - P0.1 - Port 0
40	Vcc - Positive Power Supply

Pin Layout

Dimensional Drawing

Technical Data

Data Sheet

Atmel - Data Sheet for AT89C51-24PC

Application Notes

Atmel - 80 Series Application Notes

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