SST89E516RD - 8051 Microcontroller (64KB Flash, 40MHz, ISP/IAP)

The SST89E516RD is a high-performance 8051-based microcontroller, featuring 64KB Flash memory, 1KB RAM, and 2KB EEPROM for flexible and efficient data handling. With an operating speed of up to 40 MHz, it ensures fast execution, making it ideal for industrial automation, motor control, and consumer electronics. The built-in In-System Programming (ISP) and In-Application Programming (IAP) allow seamless firmware updates without removing the chip.

Key Features

• 8051-Compatible Core – Fully supports standard 8051 instructions
• Clock Speed: Up to 40 MHz for high-speed operation
• Memory: 64KB Flash, 1KB RAM, 2KB EEPROM
• I/O Ports: 32 (4 × 8-bit ports) for peripheral interfacing
• Timers & Counters: 3 × 16-bit for precise timing applications
• Interrupts: 8 sources, 4 priority levels for efficient multitasking
• USART Support: Reliable serial communication (UART)
• Watchdog Timer (WDT): Ensures system stability and reliability
• Power-Saving Modes: Idle & Power-down for low energy consumption
• Operating Voltage: 4.5V – 5.5V, suitable for embedded applications
• External Memory Interface: Supports additional program/data memory

Technical Specifications

• Architecture: 8051-based
• Flash Memory: 64KB (Reprogrammable)
• RAM: 1KB (Internal)
• EEPROM: 2KB (Non-volatile data storage)
• Timers: 3 × 16-bit
• I/O Ports: 32 (P0, P1, P2, P3)
• Interrupts: 8 sources, 4 priority levels
• Communication: UART (Serial)
• Power Modes: Idle & Power-down
• Programming Options: ISP/IAP (In-System & In-Application Programming)
• Voltage Range: 4.5V – 5.5V
• Clock Speed: Up to 40 MHz
• Package: Available in PLCC-44 and TQFP-44

Applications

• Industrial Automation – Motor control, sensor interfacing, and process automation
• Consumer Electronics – Smart appliances and embedded controllers
• Security Systems – Surveillance, alarm systems, and biometric devices
• Automotive Electronics – ECU, dashboard controls, and safety systems
• IoT & Embedded Systems – Low-power, connected applications