Atmel AT89C55WD 8-Bit Microcontroller 20KB Flash 40-Pin DIP
Atmel AT89C55WD 8-bit microcontroller with 20KB flash, 256 x 8-bit RAM and 40-pin DIP package. MCS-51 compatible, 4V to 5.5V supply.
The Atmel AT89C55WD 8-Bit Microcontroller provides 20KB of reprogrammable flash memory in a 40-pin DIP package for embedded control systems.
Overview
The AT89C55WD is a low-power 8-bit CMOS microcontroller built around an 8051 core. It includes 256 x 8-bit internal RAM and is fully compatible with the MCS-51 instruction set and pinout, which supports integration into existing designs. The on-chip flash memory can be programmed by the user via a conventional non-volatile memory programmer, which allows flexibility during development and production.
Key Features
- 8-bit CPU, fully compatible with MCS-51 products
- 20KB flash program memory with 10,000 write/erase cycles and three-level memory lock
- 256 x 8-bit internal RAM
- 32 programmable I/O lines
- Three 16-bit timer/counters and a full-duplex serial port (UART)
- Eight interrupt sources with a two-level interrupt architecture
- Low-power idle and power-down modes, with interrupt recovery from power-down
- Hardware watchdog timer, dual data pointer, and power-off flag
- Supplied in a through-hole mountable 40-pin DIP package
- Maximum operating frequency of 24MHz
- Supply voltage range of 4V to 5.5V
- Operating temperature range of -40°C to +85°C
Applications
Suited to embedded control systems and a wide range of applications requiring an 8051-compatible microcontroller with reprogrammable flash memory. Through-hole DIP packaging supports easy prototyping and servicing.
- Embedded control systems
- Applications requiring an 8051-compatible microcontroller
- Prototyping and servicing of through-hole designs
- Core: 8051, 8-bit CPU
- Technology: CMOS
- Program Memory: 20KB flash
- Flash Write/Erase Cycles: 10,000
- Internal RAM: 256 x 8-bit
- Programmable I/O Lines: 32
- Timers: Three 16-bit timer/counters
- Serial Port: Full-duplex UART
- Interrupt Sources: Eight
- Maximum Operating Frequency: 24MHz
- Supply Voltage: 4V to 5.5V
- Operating Temperature: -40°C to +85°C
- Package: 40-pin DIP
- Mounting: Through-hole
- Special Feature: Three-level memory lock
- Special Feature: Hardware watchdog timer, dual data pointer and power-off flag
- Special Feature: Low-power idle and power-down modes with interrupt recovery from power-down
- Width: 3.3
- Depth: 1.5
- Height: 4.3
- Weight: 0.2 gm
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
View Full Delivery & Returns PolicySecure Transactions
We take the utmost care with your payment and personal details. Our website employs advanced encryption technology, including Secure Sockets Layer (SSL), to protect your information during transmission. You can verify a secure connection by looking for 'https' and a locked padlock in your browser.
Cookie Policy
Cookies enhance your shopping experience by keeping track of your basket and remembering you when you return. We also use banner advertising based on your browsing history to present products of potential interest.
Security Warning
Beware of phishing scams! We will never ask for personal details via email. If such information is required, we'll request you to contact us by phone. If you receive an email requesting sensitive information, do not respond and let us know immediately.
You may like
