0 to 40MHz Flash Programmable 8-bit Microcontroller The **T89C51RD2-SLSIM** is a microcontroller manufactured by **ATMEL**. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** ATMEL
- **Core:** 80C51 (8-bit)
- **Operating Frequency:** Up to 60 MHz
- **Flash Memory:** 64 KB (In-System Programmable)
- **RAM:** 2 KB
- **EEPROM:** 2 KB (Data Memory)
- **Timers:** Three 16-bit Timers (Timer 0, Timer 1, Timer 2)
- **UART:** Full-duplex UART (Serial Communication)
- **I/O Ports:** Four 8-bit I/O Ports (P0, P1, P2, P3)
- **Interrupts:** 9 Interrupt Sources (4 External, 3 Timer, UART, Power Fail)
- **Power Supply:** 4.5V to 5.5V
- **Package:** PLCC (Plastic Leaded Chip Carrier)
- **Operating Temperature:** -40°C to +85°C
### **Descriptions:**
- The **T89C51RD2-SLSIM** is a high-performance CMOS version of the 80C51 microcontroller.
- It features **In-System Programming (ISP)** capability, allowing firmware updates without removing the chip.
- Includes **Watchdog Timer (WDT)** and **Power-On Reset (POR)** for enhanced reliability.
- Supports **X2 Mode**, doubling the speed without increasing clock frequency.
### **Features:**
- **64 KB Flash Memory** for program storage.
- **2 KB On-chip RAM** for data storage.
- **2 KB EEPROM** for non-volatile data retention.
- **Three 16-bit Timers** for precise timing operations.
- **Full-duplex UART** for serial communication.
- **Low-power Idle and Power-down Modes** for energy efficiency.
- **X2 Mode** for performance enhancement.
- **In-System Programming (ISP)** via UART.
- **9 Interrupt Sources** for flexible event handling.
This information is strictly based on the manufacturer's specifications and datasheet.
