LPC2364FET100: A Comprehensive Technical Overview of NXP's ARM7-Based Microcontroller
The LPC2364FET100, a member of NXP Semiconductors' robust LPC2300 family, stands as a prime example of a highly integrated microcontroller designed for complex embedded applications requiring a blend of processing power, extensive connectivity, and low-power operation. Based on the proven ARM7TDMI-S core, this microcontroller delivers a compelling feature set that has made it a longstanding choice in industrial control, automotive systems, and sophisticated consumer devices.
Architectural Foundation: The ARM7TDMI-S Core
At the heart of the LPC2364FET100 lies the ARM7TDMI-S processor, a classic RISC core operating at frequencies up to 72 MHz. This core executes both the 32-bit ARM and 16-bit Thumb instruction sets, allowing developers to optimize their code for either performance or size. This flexibility is crucial for achieving an efficient balance between processing speed and memory footprint. The inclusion of an Memory Protection Unit (MPU) enhances system reliability by safeguarding critical regions of memory and data from errant software execution, a vital feature for safety-critical and multi-tasking environments.
Comprehensive Memory Configuration
The microcontroller is equipped with a substantial 512 KB of on-chip Flash memory, providing ample space for storing application code and constant data. This Flash supports In-System Programming (ISP) and In-Application Programming (IAP), enabling firmware updates without removing the chip from the circuit board. For data processing, it integrates 58 KB of SRAM, which includes 32 KB accessible exclusively by the USB interface (if used) and the main 26 KB block, ensuring efficient data handling and temporary storage.
Rich Set of Peripheral Interfaces
A key strength of the LPC2364FET100 is its vast array of integrated peripherals, which significantly reduces the need for external components and simplifies system design.
Connectivity: It features a full-speed USB 2.0 device controller with 32 KB of dedicated RAM, making it an excellent choice for applications that require communication with a host computer. Furthermore, it includes four UARTs, two I²C-bus interfaces, three SPI/SSP interfaces, and an I²S-bus interface for audio, providing a comprehensive suite of serial communication options.
Control and Analog: The device is equipped with a 10-bit Analog-to-Digital Converter (ADC) with 8 channels, capable of performing conversions in as little as 2.44µs. For output control, it includes a 10-bit Digital-to-Analog Converter (DAC). It also offers four general-purpose timers, two PWM blocks, and a watchdog timer.
External Expansion: A crucial feature for memory expansion is the External Memory Controller (EMC). This peripheral supports the connection of external static memory devices like SRAM, ROM, and NOR Flash, providing the flexibility needed for applications requiring more memory than the substantial on-chip resources.
Packaging and Power Management
Housed in a 100-pin LQFP package, the LPC2364FET100 offers a high number of I/O pins while maintaining a relatively compact form factor. The chip incorporates advanced power management capabilities, including multiple idle and power-down modes. These modes allow the system to enter low-power states dynamically, dramatically reducing power consumption during periods of inactivity, which is essential for battery-powered or energy-sensitive applications.
Target Applications
The combination of processing power, extensive connectivity (USB, UART, I²C), and control peripherals (ADC, PWM) makes the LPC2364FET100 ideally suited for a wide range of applications, including:
Industrial networking and control systems
Automotive diagnostics and access control
Medical and data acquisition devices
Point-of-sale (POS) terminals and sophisticated peripherals
The LPC2364FET100 remains a highly capable and well-rounded microcontroller solution. Its robust integration, centered on the reliable ARM7TDMI-S core, extensive memory, and a rich peripheral set including USB and an External Memory Controller, provides a powerful single-chip answer for developers building complex connected embedded systems that demand performance, connectivity, and reliability.
Keywords:
ARM7TDMI-S
USB 2.0
External Memory Controller (EMC)
512KB Flash
Power Management
