AT91RM9200-QI-002
32-bit ARM microcontrollers with 128KB ROM in 208-pin QFP packages
Manufacturer： ['microchip', 'atmel']
series introduction
# Introduction to the AT91RM9200 - QI - 002 Product Series
## 1. Overview
The AT91RM9200 - QI - 002 product series represents a cutting - edge line of microcontrollers developed to meet the diverse and demanding requirements of modern embedded systems. These microcontrollers are designed with a focus on high performance, low power consumption, and rich peripheral integration, making them suitable for a wide range of applications across various industries.
## 2. Key Features
### 2.1 Processor Core
- **ARM920T Core**: At the heart of the AT91RM9200 - QI - 002 is the powerful ARM920T RISC processor core. This core offers a high - performance 32 - bit architecture with a Harvard pipeline, enabling it to execute instructions at a rapid pace. It supports a wide range of data types and addressing modes, providing flexibility for different programming requirements.
- **Memory Management Unit (MMU)**: The integrated MMU allows for efficient memory management, enabling the separation of virtual and physical memory. This feature is crucial for running complex operating systems such as Linux, which can take advantage of memory protection and virtual memory capabilities.
### 2.2 Memory
- **Internal Memory**: The microcontroller comes with a certain amount of on - chip SRAM, which provides fast access to data and code. This internal memory can be used for storing critical variables, buffers, and small programs, reducing the need for external memory access and improving overall system performance.
- **External Memory Interface**: It features a flexible external memory interface that supports various types of external memories, including SDRAM, Flash memory, and SRAM. This allows for easy expansion of the system's memory capacity, enabling the storage of large programs and data sets.
### 2.3 Peripherals
- **USB Interface**: The AT91RM9200 - QI - 002 is equipped with a USB interface, which can be used for both device and host modes. This enables seamless communication with other USB - enabled devices, such as keyboards, mice, and storage devices, expanding the functionality of the embedded system.
- **Ethernet Controller**: An integrated Ethernet controller provides high - speed network connectivity. It supports standard Ethernet protocols, allowing the microcontroller to be easily integrated into local area networks (LANs) or connected to the Internet. This feature is essential for applications such as network - based monitoring, data logging, and remote control.
- **UART, SPI, and I2C Interfaces**: These common serial communication interfaces are available on the microcontroller, enabling it to communicate with a wide range of external devices, such as sensors, actuators, and other microcontrollers. The UART interface is suitable for asynchronous serial communication, while the SPI and I2C interfaces are used for synchronous serial communication, providing different options for different application scenarios.
- **Timers and Counters**: Multiple timers and counters are included in the AT91RM9200 - QI - 002, which can be used for various purposes, such as generating accurate time delays, measuring time intervals, and controlling PWM (Pulse Width Modulation) signals. PWM signals are commonly used for motor control, LED dimming, and other applications that require precise control of power or signal levels.
### 2.4 Power Management
- **Low - Power Modes**: The microcontroller offers several low - power modes, including standby and sleep modes. In these modes, the power consumption of the device is significantly reduced, making it suitable for battery - powered applications. The transition between different power modes can be easily controlled by software, allowing for optimal power management based on the system's requirements.
## 3. Applications
### 3.
Images for reference
208-PQFP