NXP LPC2458FET180: A Comprehensive Technical Overview of the ARM7-Based Microcontroller

The NXP LPC2458FET180 stands as a prominent member of the LPC2000 family, representing a highly integrated microcontroller designed for complex embedded applications requiring a blend of high performance, extensive connectivity, and low power consumption. Built around the robust ARM7TDMI-S core, this microcontroller operates at frequencies up to 72 MHz, providing a powerful yet efficient processing backbone for a wide array of industrial, automotive, and consumer systems.

Architectural Core and Performance

At the heart of the LPC2458 lies the venerable ARM7TDMI-S processor core, a workhorse in the embedded world. This 32-bit RISC architecture executes both the 32-bit ARM and 16-bit Thumb instruction sets, allowing developers to optimize for either performance or code density. The inclusion of an External Memory Controller (EMC) is a critical feature, supporting static memory devices like SRAM, ROM, and NOR Flash, as well as dynamic memories including SDRAM. This capability is essential for applications that require significant off-chip memory expansion beyond the chip's substantial on-chip resources.

Key On-Chip Features and Peripherals

The LPC2458FET180 is distinguished by its rich set of integrated peripherals, which minimizes external component count and simplifies system design.

Memory: It boasts 512 KB of on-chip high-speed Flash memory and 98 KB of SRAM, including 64 KB of SRAM that can serve as a buffer for high-performance CPU data access without wait states.

Connectivity: A standout feature is its full-speed USB 2.0 interface with on-chip PHY, enabling direct connection to a host or device without external components. This is complemented by dual CAN 2.0B controllers, making it an ideal solution for industrial networking and automotive systems. Additionally, it features a 10/100 Ethernet MAC, which is invaluable for networked embedded devices.

Other Interfaces: The peripheral set is rounded out by multiple UARTs, I²C, and SPI/SSP serial interfaces, a General Purpose DMA controller, an 8-channel 10-bit ADC, and up to 160 fast general-purpose I/O pins.

Package and Applications

The "FET180" suffix denotes a specific 180-pin LQFP package with a "Full" set of features enabled. This surface-mount package is designed for automated assembly and is suitable for a broad range of environments. The combination of its processing power, extensive connectivity (USB, CAN, Ethernet), and large memory makes the LPC2458FET180 perfectly suited for demanding applications such as industrial automation, motor control, gateways and protocol converters, medical devices, and in-vehicle networking.

ICGOOODFIND

The NXP LPC2458FET180 is a highly capable and versatile microcontroller that masterfully balances the proven efficiency of the ARM7 core with an extensive array of modern communication peripherals. Its integrated USB, Ethernet, and dual CAN interfaces, supported by ample on-chip memory and an external memory controller, make it a powerful system-on-chip solution for complex embedded systems that require robust connectivity and data processing.

Keywords:

ARM7TDMI-S

USB 2.0

External Memory Controller (EMC)

CAN 2.0B

Ethernet MAC