AT89C51RC2 - Uncategorized Microchip - Free user manual and instructions
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| Product Type | Microcontroller |
| Brand | Microchip (Atmel) |
| Model | AT89C51RC2 |
| Architecture | 8-bit 8051 |
| Maximum CPU Speed | 40 MHz |
| Flash Memory | 32 KB |
| RAM | 256 bytes |
| I/O Pins | 32 |
| Timers | 3 x 16-bit |
| UART | 1 (Full Duplex) |
| Operating Voltage | 4.0V - 5.5V |
| Operating Temperature | -40°C to +85°C |
| Package Type | PLCC, PQFP, TQFP, PDIP |
| Power Consumption | Typical 50 mA at 40 MHz |
| Interrupt Sources | 6 |
| Programming Interface | ISP (In-System Programming) |
| Additional Features | Watchdog Timer, Power-on Reset, Dual DPTR |
| RoHS Compliant | Yes |
Frequently Asked Questions - AT89C51RC2 Microchip
What is the AT89C51RC2 microcontroller?
The AT89C51RC2 is an 8-bit microcontroller based on the 8051 architecture, manufactured by Microchip. It features 32 KB of Flash memory, 256 bytes of RAM, 32 I/O lines, and operates at up to 40 MHz.
What is the operating voltage range of the AT89C51RC2?
The AT89C51RC2 operates from 4.0V to 5.5V, making it compatible with standard TTL logic levels.
Can I program the AT89C51RC2 in-system?
Yes, the AT89C51RC2 supports In-System Programming (ISP) via a serial interface, allowing you to program the device without removing it from the circuit.
What are the main features of the AT89C51RC2?
Key features include: 32 KB Flash, 256 bytes RAM, 32 I/O pins, three 16-bit timers, a full-duplex UART, six interrupt sources, a watchdog timer, and a maximum clock speed of 40 MHz.
What packages are available for the AT89C51RC2?
The AT89C51RC2 is available in several package types: PLCC, PQFP, TQFP, and PDIP, providing flexibility for different PCB designs.
What is the temperature range for the AT89C51RC2?
The operating temperature range is -40°C to +85°C, suitable for industrial applications.
How do I reduce power consumption with the AT89C51RC2?
The microcontroller supports idle and power-down modes to reduce power consumption. In idle mode, the CPU is halted while peripherals remain active; in power-down mode, all operations cease.
What development tools are available for the AT89C51RC2?
Common tools include Keil C51, IAR Embedded Workbench, and Atmel Studio. Programming can be done using a standard ISP programmer or a compatible development board.
Is the AT89C51RC2 RoHS compliant?
Yes, the AT89C51RC2 is RoHS compliant, meeting the requirements for lead-free manufacturing.
What are common applications for the AT89C51RC2?
It is widely used in embedded systems such as industrial controls, consumer electronics, automotive systems, and IoT devices due to its robust 8051 architecture and rich peripheral set.
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