AT89C55WD

KeyValue
Flash (kBytes):20 kBytes
Max. Operating Freq. (MHz):24 MHz
CPU:8051-12C
Max I/O Pins:32
UART:1
Pin Count:44
SRAM (kBytes):0.25
Operating Voltage (Vcc):4.0 to 6.0
Timers:3
Watchdog:Yes

Low-power, high-performance CMOS 8-bit microcontroller with 20KB of flash programmable ROM and 256 bytes of RAM. The device is manufactured using Atmel high-density nonvolatile memory technology and is compatible with the industry standard 80C51 and 80C52 instruction set and pinout. On-chip flash allows the program memory to be user programmed by a conventional nonvolatile memory programmer.

This versatile 8-bit CPU with flash is a highly flexible and cost-effective solution for many embedded control applications.

Ordering Code 订购信息
订购码封装操作范围载体类型
AT89C55WD-24JUPLCC 44J 44Industrial (A) (-40°C to 85°C)
AT89C55WD-24PUPDIP 40P6 40Industrial (A) (-40°C to 85°C)
AT89C55WD-24AUTQFP 44A 44Industrial (A) (-40°C to 85°C)
DataSheet 数据手册
Application Note
Brochures and Flyers
Other
Qualification
User Guide
AT89C55WD Complete (文件大小: 513447, 35 页数, 修订版 D, 更新时间: 06/2008)
Analyzing the Behavior of an Oscillator and Ensuring Good Start-up (文件大小: 252537, 16 页数, 更新时间: 07/2004)
Atmel AT06015: Production Programming of Atmel Microcontrollers (文件大小: 420KB, 10 页数, 修订版 D, 更新时间: 10/2016)
Design Guide for Atmel 8051 Standard Devices (文件大小: 245406, 21 页数, 修订版 A, 更新时间: 11/2007)
Migrating from AT89C2051/C4051 to AT89LP2052/LP4052 (文件大小: 153825, 8 页数, 修订版 B, 更新时间: 05/2008)
Migrating from AT89C2051/C4051 to AT89S2051/S4051 (文件大小: 84966, 4 页数, 修订版 A, 更新时间: 05/2005)
Migrating from AT89C51/C52 to AT89S51/S52 (文件大小: 43566, 3 页数, 修订版 A, 更新时间: 06/2004)
Migration from OTP 8051 to Flash 8051 (文件大小: 212861, 9 页数, 修订版 B, 更新时间: 12/2002)
Program Examples for 8051 Timers (文件大小: 680364, 88 页数, 修订版 A, 更新时间: 06/2004)
Program Examples for 8051 UART (文件大小: 194924, 26 页数, 修订版 A, 更新时间: 06/2004)
A Digital Thermometer Using the AT89LP2052 MCU (文件大小: 2545, 5 页数, 修订版 B, 更新时间: 06/2011)
A Digital Thermometer Using the AT89LP2052 MCU (文件大小: 2545, 5 页数, 修订版 B, 更新时间: 06/2011)
Analog-to-Digital Conversion Utilizing AT89LP MCU without ADC (文件大小: 9177, 10 页数, 修订版 B, 更新时间: 06/2011)
Analog-to-Digital Conversion Utilizing AT89LP MCU without ADC (文件大小: 9177, 10 页数, 修订版 B, 更新时间: 06/2011)
AT89C51 In-Circuit Programming (11 页数, 更新时间: 09/1997)
AT89C51 In-Circuit Programming (11 页数, 更新时间: 09/1997)
Controlling FPGA Configuration with a Flash-based Microcontroller (7 页数, 修订版 B, 更新时间: 12/1997)
Controlling FPGA Configuration with a Flash-based Microcontroller (7 页数, 修订版 B, 更新时间: 12/1997)
Designing Boards with Atmel AT89C51/52, AT89C1051 for writing Flash at In-Circuit Test (5 页数, 修订版 A, 更新时间: 12/1997)
Driving Unipolar Stepper Motors Using 8051 (文件大小: 460186, 15 页数, 修订版 B, 更新时间: 12/2002)
EMC Improvement Guidelines (17 页数, 修订版 B, 更新时间: 08/2003)
External Brown-out Protection for C51 Microcontrollers with Active High Reset Input (文件大小: 503373, 15 页数, 更新时间: 11/2002)
How to Calculate the Capacitor of the Reset Input of an 8051 Microcontroller (文件大小: 57856, 8 页数, 修订版 A, 更新时间: 10/2003)
How to Calculate the Capacitor of the Reset Input of an 8051 Microcontroller (文件大小: 57856, 8 页数, 修订版 A, 更新时间: 10/2003)
Interfacing AT24CXX Serial EEPROMs with AT89LP MCUs (文件大小: 6161, 4 页数, 修订版 F, 更新时间: 06/2011)
Interfacing AT24CXX Serial EEPROMs with AT89LP MCUs (文件大小: 6161, 4 页数, 修订版 F, 更新时间: 06/2011)
Interfacing AT25CXXX Serial EEPROMs with AT89LP MCUs (文件大小: 6719, 3 页数, 修订版 D, 更新时间: 06/2011)
Interfacing AT25CXXX Serial EEPROMs with AT89LP MCUs (文件大小: 6719, 3 页数, 修订版 D, 更新时间: 06/2011)
Interfacing AT93CXXX Serial EEPROMs with AT89LP MCUs (文件大小: 5943, 3 页数, 修订版 D, 更新时间: 06/2011)
Interfacing AT93CXXX Serial EEPROMs with AT89LP MCUs (文件大小: 5943, 3 页数, 修订版 D, 更新时间: 06/2011)
PC-Interfaced Data Aquisition System with the Atmel AT89C2051 Microcontroller (19 页数, 修订版 A, 更新时间: 11/2003)
Programming the Atmel Family of Flash Memories (4 页数, 修订版 B, 更新时间: 12/1997)
Programming the Atmel Family of Flash Memories (4 页数, 修订版 B, 更新时间: 12/1997)
Two-Wire Peripheral Expansion for the AT89LP2052 MCU (文件大小: 5096, 13 页数, 修订版 B, 更新时间: 06/2011)
Two-Wire Peripheral Expansion for the AT89LP2052 MCU (文件大小: 5096, 13 页数, 修订版 B, 更新时间: 06/2011)
Using a Personal Computer to Program the AT89C51/C52/LV51/LV52/C1051/C2051 (8 页数, 修订版 D, 更新时间: 12/1997)
Using a Personal Computer to Program the AT89C51/C52/LV51/LV52/C1051/C2051 (8 页数, 修订版 D, 更新时间: 12/1997)
Atmel Flash Microcontroller Product Portfolio (文件大小: 3.49 MB, 48 页数, 更新时间: 09/2015)
AVR186: Best practices for the PCB layout of Oscillators (文件大小: 140KB, 5 页数, 修订版 B, 更新时间: 09/2016)
Calculation tool for setting Timers, UART, parameters in 80C51 Microcontrollers (文件大小: 19234, 更新时间: 06/2007)
Hardware Connections for C51 Microcontrollers (文件大小: 44518, 4 页数, 更新时间: 07/2004)
NXP Flash MCU to Atmel Flash MCU Cross Reference (文件大小: 87KB, 4 页数, 更新时间: 07/2012)
NXP Flash MCU to Atmel Flash MCU Devices, Non-Direct Replacements (文件大小: 41KB, 2 页数, 更新时间: 07/2012)
Tables for setting UART parameters in 80C51 Microcontrollers (文件大小: 27648, 修订版 B, 更新时间: 01/2005)
Device Programmers for 8051 Devices (文件大小: 432128, 更新时间: 09/2007)
Emulators for 80C51 Devices (文件大小: 148480, 更新时间: 11/2003)
Package Adapters of 80C51 Devices (文件大小: 32768, 更新时间: 10/2004)
AT89C2051 Reliability Qualification Report (文件大小: 58880, 7 页数, 更新时间: 04/2009)
AT89C51 Reliability Qualification Report (文件大小: 92540, 11 页数, 更新时间: 10/2006)
AT89C52 Reliability Qualification Report (文件大小: 90423, 11 页数, 更新时间: 10/2006)
AT89S8252 Reliability Qualification Report (文件大小: 9920, 5 页数, 更新时间: 10/2003)
8051 Microcontroller Instruction Set (文件大小: 1155626, 50 页数, 修订版 C, 更新时间: 07/2006)
8051 Microcontrollers Hardware Manual (文件大小: 1809889, 113 页数, 修订版 E, 更新时间: 01/2007)