ArrowARM Guide - Embedded Developer

42 |LPC23xx and LPC24xx 72 MHz, 32-bitmicrocontrollers with ARM7TDMI-S coreCore: ARM7TDMI-SThe LPC23xx and LPC24xx use a high-performance 32-bit ARM7 core that operatesat up to 72 MHz. Each device has 512 KB of on-chip Flash. The LPC23xx offers upto 58 KB of SRAM, while the LPC24xx offers up to 98 KB of SRAM. Both deviceshave two AHB buses, so high-bandwidth peripherals like Ethernet and USB can runsimultaneously, without impacting the main application. The LPC24xx is also the onlyARM7 MCU with two-port USB capability; it has one USB device, and one USBHost or OTG. This unique ability enables new advances for multiple communications applications by supporting compound(Host + device) USB functionality, such as a USB mini-hub.Features • On-chip RC-oscillator 4 Mhz trimmed to 1%• Four 32-bit general purpose timers• PWM block supporting 3-Phase Motor Control• Watchdog timer from multiple clock source options• 10-bit A/D converter and 10-bit D/A converter• Low-power Real Time Clock with 2 KB SRAM andbattery back-up• General Purpose DMA controller• High-speed Serial: I 2 S (digital Audio), three I 2 C,three SPI/SSP, four UARTsLPC24xx Block DiagramBenefits • Allows fast simultaneous communications operations• Eliminates communication bandwidth bottlenecks• Design flexibilityArrow Electronics ARM Solutions1-866-910-3650