The LPC2103 is PHILIPS 'latest ARM7TDMI-S and LQFP48 package LPC2103, with a maximum operating speed of 70MHz, 32KB of on-chip FLASH program memory and 8K of on-chip static RAM. ISP\/IAP programming via on-chip boot loader.
The LPC2103's 10-bit A\/D converter offers 8 analog inputs, a low-power real-time clock with a separate power supply and a specific 32768HZ clock input, up to 32 general-purpose I\/O ports (capable of tolerating 5V voltage), and additional power consumption can be optimized by individually enabling\/disabling peripheral function peripheral clock division. The smaller package and low power consumption make the LPC2103 particularly suitable for small applications such as access control and POS machines; Thanks to its built-in wide range serial communication interface and 8KB on-chip SRAM, it is also well suited for communication gateways and protocol converters. The advanced performance also makes it suitable for use as a mathematical coprocessor, in addition to being particularly suitable for industrial control and medical systems.
The LPC2387 microcontroller is an ARM7TDMI-SCPU operating at 72MHz, with 512kB of on-chip Flash program memory and both ISP and IAP capabilities. The Flash program memory is located on the ARM local bus and can be accessed by high-performance cpus.
64kBSRAM is accessible to high-performance cpus via the ARM local bus
16kBSRAM is used for Ethernet interfaces and can also be used as a general purpose SRAM
16kBSRAM is available for universal DMA and can also be accessed via USB.
So their cpu and operating frequency are similar, and the main difference is the size of the flash inside the chip and some supporting modules on the periphery.