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AT89C55WD-24PU
+StücklisteIC MCU 8BIT 20KB FLASH 40DIP
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HerstellerMikrochip-Technologie
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Herstellerteil #AT89C55WD-24PU
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Paket PDIP-40
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Spezifikationen
| Attribut | Wert |
| Package / Case | Tube |
| Series | 89C |
| Part Status | Active |
| Core Processor | 8051 |
| Core Size | 8-Bit |
| Speed | 24MHz |
| Connectivity | UART/USART |
| Peripherals | WDT |
| Number of I/O | 32 |
| Program Memory Size | 20KB (20K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 256 x 8 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 5.5V |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole |
Übersicht
Description
- 20KB Flash ROM (reprogrammable) and 256B RAM.
- 24MHz max clock speed (24PU suffix indicates 24MHz operation).
- 40-pin DIP (PDIP) package, making it breadboard-friendly.
- Three 16-bit timers, UART serial port, and 32 I/O pins.
- Watchdog timer (WD suffix) for system reliability.
- Low-power idle/power-down modes.
Ideal for embedded control applications, it retains 8051 compatibility while offering enhanced memory and power management. Commonly used in industrial, automotive, and consumer electronics.
Equivalent
1. AT89S52 (lower memory but pin-compatible).
2. AT89C51 (smaller flash, same architecture).
3. P89C51RD2 (NXP, higher flash).
4. STC89C52 (STC Micro, China-based).
5. DS89C450 (Maxim, faster, compatible).
Check pinout, voltage, and features for exact replacement. Modern upgrades: AT89LP series or PIC/STM32 (require code adaptation).
Features
- 20KB Flash ROM (reprogrammable)
- 256B RAM
- 24MHz max clock speed (24PU suffix = 24MHz, industrial temp)
- Three 16-bit timers
- 32 I/O pins
- UART, SPI (serial communication)
- Watchdog timer (WD suffix)
- Low-power idle/power-down modes
- 4V–5.5V operating voltage
- 40-pin PDIP package (PU suffix)
- 1000 write/erase cycles (Flash)
Ideal for embedded control, industrial, and consumer applications.
Pinout
- 40-pin DIP (Dual In-line Package)
- 24 MHz max clock speed
- 20KB Flash ROM, 256B RAM
- 32 I/O pins (4x 8-bit ports: P0, P1, P2, P3)
- 3 timers/counters, 6 interrupts
- UART (serial communication)
- Watchdog timer (for system recovery)
- Power-saving idle/power-down modes
Pins include VCC (power), GND (ground), XTAL1/2 (oscillator), RST (reset), EA (external memory enable), and ALE/PROG (address latch enable).
Used in embedded systems for control and automation.
Application
1. Industrial Control – Automation, sensor interfacing, and motor control.
2. Consumer Electronics – Appliances, remote controls, and smart devices.
3. Embedded Systems – Data logging, security systems, and small-scale automation.
4. Automotive – Basic control modules and dashboard systems.
5. Medical Devices – Simple monitoring equipment.
With 20KB Flash memory, 256B RAM, and 24MHz clock speed, it suits cost-sensitive, low-power applications requiring moderate processing. Its 8051 architecture ensures compatibility with legacy systems.
