Professional IC Distribution & Technical Solutions

STC89C54RD+-40I-DIP40 Manufacturer: STC

#### Specifications:

• Core: 8051-compatible microcontroller
• Flash Memory: 16 KB (expandable up to 64 KB with external memory)
• RAM: 1280 bytes
• Operating Voltage: 3.4V – 5.5V
• Clock Speed: Up to 40 MHz (40I denotes 40 MHz industrial-grade)
• Package: DIP40 (Dual In-line Package, 40 pins)
• Operating Temperature: -40°C to +85°C (Industrial-grade)
• I/O Pins: 32 (4 ports, 8 pins each)
• Timers/Counters: 3 (Timer 0, Timer 1, Timer 2)
• Serial Communication: UART (Full-duplex)
• Interrupt Sources: 8
• Watchdog Timer: Yes
• Power Modes: Idle and Power-down modes for low power consumption
• EEPROM: None (requires external storage if needed)
• Programming: In-system programmable (ISP) via serial port

#### Descriptions:

The STC89C54RD+-40I-DIP40 is an enhanced 8051-based microcontroller from STC with 16 KB of Flash memory and 1280 bytes of RAM. It operates at up to 40 MHz and supports a wide voltage range (3.4V–5.5V). The DIP40 package makes it suitable for breadboard prototyping and industrial applications.

#### Features:

• High-Speed 8051 Core – Efficient execution of instructions.
• In-System Programming (ISP) – Allows firmware updates via serial interface.
• Low Power Consumption – Supports idle and power-down modes.
• Industrial-Grade Reliability – Operates in harsh environments (-40°C to +85°C).
• Multiple Interrupts & Timers – Flexible for real-time applications.
• UART Communication – Enables serial data transfer.
• Watchdog Timer – Prevents system lock-ups.
• Wide Voltage Range – Compatible with 3.3V and 5V systems.

This microcontroller is commonly used in industrial control, automation, embedded systems, and educational projects.