NXP Semiconductors LPC24XX UM10237 - Manual (Page 4)

UM10237_4 © NXP B.V. 2009. All rights reserved.
User manual Rev. 04 — 26 August 2009 4 of 792
NXP Semiconductors
UM10237
Chapter 1: LPC24XX Introductory information
Most features and peripherals are identical for all LPC2400 parts. All differences are listed
in
Table 1–2 .
3. LPC2400 features
• ARM7TDMI-S processor, running at up to 72 MHz.
• 98 kB on-chip SRAM includes:
– 64 kB of SRAM on the ARM local bus for high performance CPU access.
– 16 kB SRAM for Ethernet interface. Can also be used as general purpose SRAM.
– 16 kB SRAM for general purpose DMA use also accessible by the USB.
– 2 kB SRAM data storage powered from the RTC power domain.
• LPC2458/68/78 only: 512 kB on-chip Flash program memory with In-System
Programming (ISP) and In-Application Programming (IAP) capabilities. Flash program
memory is on the ARM local bus for high performance CPU access.
• Dual Advanced High-performance Bus (AHB) system allows memory access by
multiple resources and simultaneous program execution with no contention.
• EMC provides support for asynchronous static memory devices such as RAM, ROM
and Flash, as well as dynamic memories such as Single Data Rate SDRAM.
• Advanced Vectored Interrupt Controller (VIC), supporting up to 32 vectored interrupts.
• General Purpose AHB DMA controller (GPDMA) that can be used with the SSP, I 2 S,
and SD/MM interface as well as for memory-to-memory transfers.
• LPC2470/78 only: LCD controller, supporting both Super-Twisted Nematic (STN) and
Thin-Film Transistors (TFT) displays.
– Dedicated DMA controller.
– Selectable display resolution (up to 1024
× 768 pixels).
– Supports up to 24-bit true-color mode.
• Serial Interfaces:
– Ethernet MAC with MII/RMII interface and associated DMA controller. These
functions reside on an independent AHB bus.
– USB 2.0 full-speed dual port device/host/OTG controller with on-chip PHY and
associated DMA controller.
– Four UARTs with fractional baud rate generation, one with modem control I/O, one
with IrDA support, all with FIFO.
– CAN controller with two channels.
Table 2. Differences between LPC2400 parts
Pins/
High-speed
GPIO pins Flash EMC LCD
LPC2458 180/136 512 kB 16-bit no
LPC2460/20 208/160 flashless 32-bit no
LPC2468 208/160 512 kB 32-bit no
LPC2470 208/160 flashless 32-bit yes
LPC2478 208/160 512 kB 32-bit yes