AT89C51RC2, Microcontroller 8-bit 32K Flash - PLCC-44

The AT89C51RC2 is a high-performance 8-bit microcontroller based on the 80C52 architecture. It features 32K bytes of Flash memory, 256 bytes of internal RAM, and 1K bytes of expanded XRAM (XRAM). This microcontroller retains all the features of the 80C52 while adding enhanced functionality, such as an Extended Mode (X2) for reduced power consumption and improved performance. It includes a 9-source, 4-level interrupt controller, three 16-bit timer/counters, and a Programmable Counter Array (PCA). The built-in SPI interface, hardware watchdog timer, and keyboard interface port allow for advanced control in embedded applications. The AT89C51RC2 supports In-System Programming (ISP) via Vcc and Boot ROM, making it ideal for applications requiring flexible firmware updates. With its wide operating voltage range of 2.7V to 5.5V, the AT89C51RC2 supports both internal and external execution speeds of 40 MHz, making it well-suited for applications such as motor control, alarms, high-speed I/O operations, and smart card readers.

Key Features:

• 80C52-Based 8-bit Microcontroller – Fully compatible with the 8051 instruction set, featuring a high-performance C52 core with enhanced processing capabilities.
• High-Capacity Flash Memory & RAM – Equipped with 32K bytes of on-chip Flash memory, 256 bytes of internal RAM, and 1K bytes of expanded XRAM, ensuring ample storage for code and data.
• Multiple Clock & Execution Modes – Supports 40 MHz (2.7V–5.5V) and 30 MHz (6 clock/machine cycle mode) for efficient operation, with an X2 mode (16 MHz, 6 clock/machine cycle mode) for reduced power consumption.
• Versatile Communication Interfaces – Features an Enhanced UART (EUART) for multiprocessor communication, SPI Interface (Master/Slave mode), and Programmable Counter Array (PCA) with five channels for advanced control applications.
• Flexible In-System Programming (ISP) & Bootloader Support – Allows firmware updates via ISP using standard Vcc power supply, with an integrated boot ROM for low-level Flash programming routines.
• Low Power & Power Management Features – Includes Idle Mode, Power-Down Mode, and an 8-bit Clock Prescaler to optimize power consumption, making it ideal for battery-powered applications.

Additional Specifications:

• Package Type: PLCC-44
• Clock Frequency: <= 40MHz
• Supply Voltage: 2.7– 5.5V
• RAM: 256 Bytes (Internal) + 1024 Bytes (XRAM)
• ROM: 32KBytes