LPC2939FBD208
ARM9-based microcontrollers with 768KB flash memory in 208-pin LQFP packages
Manufacturer： nxp
series introduction
# Introduction to the LPC2939FBD208 Product Series
## 1. Overview
The LPC2939FBD208 is a highly advanced and versatile microcontroller product series developed by NXP Semiconductors. It belongs to the ARM7 - based LPC family, which is well - known for its high performance, low power consumption, and rich peripheral integration. This particular series is designed to meet the diverse requirements of a wide range of embedded applications, from industrial control systems to consumer electronics.
## 2. Key Features
### 2.1 Processor Core
- **ARM7TDMI - S Core**: The LPC2939FBD208 is powered by an ARM7TDMI - S 32 - bit RISC processor core. This core offers a high - performance computing platform with a clock speed that can reach up to 72 MHz. The ARM7 architecture provides a good balance between performance and power consumption, making it suitable for battery - powered and energy - efficient applications.
- **Thumb Instruction Set**: It supports the Thumb instruction set, which allows for more compact code storage. This is beneficial as it reduces the memory requirements of the application, enabling the use of smaller and more cost - effective memory devices.
### 2.2 Memory
- **On - Chip Flash Memory**: The microcontroller comes with a large amount of on - chip flash memory. The LPC2939FBD208 typically has 512 KB of flash memory, which can be used to store the application code. This on - chip flash provides fast access to the code, reducing the need for external memory and simplifying the system design.
- **On - Chip SRAM**: There is also 96 KB of on - chip SRAM available. This SRAM can be used for data storage during the execution of the program, such as storing variables, buffers, and intermediate results. The fast access time of the SRAM ensures efficient data processing.
### 2.3 Peripherals
#### 2.3.1 Serial Communication
- **UART (Universal Asynchronous Receiver - Transmitter)**: Multiple UART interfaces are available, allowing for easy communication with other serial devices such as sensors, displays, and modems. The UARTs support various baud rates and can be configured for different data formats, making them highly flexible for different communication requirements.
- **SPI (Serial Peripheral Interface)**: The SPI interface provides a high - speed serial communication option. It is commonly used for communicating with external devices such as flash memories, ADCs (Analog - to - Digital Converters), and DACs (Digital - to - Analog Converters). The SPI interface supports full - duplex communication and can operate at high clock speeds, enabling fast data transfer.
- **I²C (Inter - Integrated Circuit)**: The I²C interface is a widely used serial communication protocol for connecting multiple devices on a single bus. It is suitable for communicating with low - speed devices such as EEPROMs, sensors, and real - time clocks. The LPC2939FBD208's I²C interface supports both master and slave modes, providing flexibility in system design.
#### 2.3.2 Timers and Counters
- **Multiple Timers**: The microcontroller is equipped with several timers, including general - purpose timers and watchdog timers. The general - purpose timers can be used for tasks such as generating accurate time delays, measuring time intervals, and generating PWM (Pulse - Width Modulation) signals. The watchdog timer is used to monitor the system's operation and reset the microcontroller in case of a software or hardware failure.
#### 2.3.3 ADC and DAC
- **ADC (Analog - to - Digital Converter
Images for reference
208-LQFP SOT459-1
Image Preview
Image Preview