AT89S51-24JU Microcontrollers - MCU by Microchip Technology

Status: Active
Series: AT89S51
RoHS: Compliant
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Low-power, high-performance CMOS 8-bit microcontroller with 4KB of ISP flash memory. The device uses Microchip high-density, nonvolatile memory technology and is compatible with the industry-standard 80C51 instruction set and pinout. On-chip flash allows program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.

This powerful microcontroller is suitable for many embedded control applications.

Prices starting from US$3.45

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Program Memory Type Flash
Program Memory Size (KB) 4
Data EEPROM (bytes) 0
Capture/Compare/PWM (CCP) 0
Max 8 Bit Digital Timers 0
Number of ADCs 0
ADC Channels 0
Max ADC Resolution (bits) 0
Number of Comparators 0
Temp. Range Min. 0
Temp. Range Max. 0
Operation Voltage Max.(V) 5.5
Operation Voltage Min.(V) 4
Pin Count 44
Low Power No
Pins | Packaging 44 | PLCC
Temp Range -40C to +85C
Packing Media Tube (27)


Application Notes
AN_4345 - Program Examples for 8051 Timers
AN_4348 - Program Examples for 8051 SPI
AN_3449 - Migrating from AT89S8252/S53 to AT89S8253
AN_3487 - Migrating from AT89C51/C52 to AT89S51/S52
AN_4346 - Program Examples for 8051 UART
AN_4353 - Program Examples for 8051 TWI
AN_4361 - Program Examples for 8051 ADC
AN_4362 - Program Examples for 8051 Keyboard and Watchdog
AN_4365 - Program Examples for 8051 Flash API
AN_3715 - Migrating from AT89S52 to AT89LP52
AN_4363 - Analyzing the Behavior of an Oscillator and Ensuring Good Start-up
AN_7639 - AT89C51RE2 code banking and bank switching with Keil ?Vision
AN_7605 - Migrating from Philips: P89C51RB2, P89C51RC2, P89C51RD2, P89C660, P89C662, P89C664 to : AT89C5
AN_7764 - Design Guide for 8051 Standard Devices
AN_migration-87xx2_89xx2 - Migration from OTP 8051 to Flash 8051
AN_7725 - Flash API for AT89C51RE2
AN_flash_api_rd - C Flash Drivers for the T89C51RD2 for Keil Compiler
AN_7716 - C51 General Information about Bootloader and In-System Programming
AN_4239 - Migration from T89C51RD2 to AT89C51RD2/ED2
AN_3554 - Migrating from AT89C2051/C4051 to AT89S2051/S4051
AN_4284 - How to Calculate the Capacitor of the Reset Input of an 8051 Microcontroller
AN_0508 - Controlling FPGA Configuration with a Flash-based Microcontroller
AN_0510 - Programming the Family of Flash Memories
AN_0524 - Analog-to-Digital Conversion Utilizing AT89LP MCU without ADC
AN_0597 - A Digital Thermometer Using the AT89LP2052 MCU
AN_0593 - Two-Wire Peripheral Expansion for the AT89LP2052 MCU
AN_8128 - AVR186: Best practices for the PCB layout of Oscillators
AN_3655 - AT89S8253 Primer
AN_4278 - Guidelines to Keep ADC Resolution within Specification
AN_1018 - AT89S8252 Primer
AN_0898 - AT89S8252 In-System Programming
AN_4218 - Programming T89C51xx and AT89C51xx with Device Programmers
AN_3ac0a06adfd2e - Keypad decoding technique using TSC80251G1
AN_3ae686c15593f - In-system Programming with C51 MCU and External Flash
AN_4279 - EMC Improvement Guidelines
AN_3d2414055039e - How to Emulate Read/Write Code Access to T89C51xx Using Hitex DProbeHS Emulator
AN_4314 - C Flash Drivers for the T89C5115 for Keil Compilers rev 1.2.0
AN_4315 - C Flash Drivers for the T89C51AC2 for Keil Compilers rev 1.2.0
AN_1489 - PC-Interfaced Data Aquisition System with the AT89C2051 Microcontroller
AN_0507 - Interfacing AT24CXX Serial EEPROMs with AT89LP MCUs
AN_0521 - Interfacing AT93CXXX Serial EEPROMs with AT89LP MCUs
AN_0628 - Interfacing AT25CXXX Serial EEPROMs with AT89LP MCUs
AN2468 - Production Programming of Microchip AVR and SAM Microcontrollers
AN_4183 - External Brown-out Protection for C51 Microcontrollers with Active High Reset Input
AN_4220 - C Flash Drivers for the (A)T89C51RB2/RC2/IC2 for Keil Compiler rev 1.2.1
AN_4214 - Driving Unipolar Stepper Motors Using 8051
AN_3310 - AT89ISP Programmer Cable

Hardware Connections for C51 Microcontrollers - This document provides schematics that outline the hardware connections to C51 microcontrollers from USB, CAN, UART, and UART Auto interfaces.
Calculation tool for setting Timers, UART, parameters in 80C51 Microcontrollers - This Excel file allows a user to determine register values for PCA, UART and Timers in order to obtain a specific signal (period and duty cycle) according to the application`
Emulators for 80C51 Devices - This Excel spreadsheet provide summary information on emulation support for Atmel 80C51 microcontrollers
Tables for setting UART parameters in 80C51 Microcontrollers - This Excel file provides configuration tables to allow a user to determine register values for UART according to the application`s oscillator frequency and internal clock mode (X1 or X2).
NXP Flash MCU to Atmel Flash MCU Devices, Non-Direct Replacements - This cross reference table helps you choose Atmel Flash MCUs to replace NXP Flash MCUs (these are non-direct replacements that are not pin-to-pin compatible).
Package Adapters of 80C51 Devices - This Excel spreadsheet list available package adapters for Atmel 80C51 microcontrollers
Device Programmers for 8051 Devices - This Excel spreadsheet provide summary information on device programmers supporting Atmel 8051 microcontrollers

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 2.3755
Shipping Weight (kg) 3.703704
Lead Count 44
Package Type PLCC
Package Width or Size 16.6x16.6x4.4mm
Soldering Composition Matte Tin

Alternative Descriptions

24Mhz, Plcc, Ind Temp, Green, 5V Rohs Compliant: Yes |Microchip AT89S51-24JU | Newark Electronics
MCU 8-bit AT89 8051 CISC 4KB Flash 5V 44-Pin PLCC | Avnet America
MCU, 8BIT, 8051, 24MHZ, PLCC-44 | Farnell
ISP-MC 5V 4K-Flash 24MHz PLCC44 | Schukat Electronic
AT89S Series 4 KB Flash 128 B SRAM 24 MHz 8-Bit Microcontroller - PLCC-44 | Future Electronics
IC: microcontroller 8051 | Transfer Multisort Elektronik
24MHZ, PLCC, IND TEMP, GREEN, 5V | Microchip Technology

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Frequently Asked Questions

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What category does AT89S51-24JU fall under?

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Is the AT89S51-24JU RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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