Chapter 1: lpc24xx introductory information, Introduction, How to read this manual – NXP Semiconductors LPC24XX UM10237 User Manual
Page 3
UM10237_4
© NXP B.V. 2009. All rights reserved.
User manual
Rev. 04 — 26 August 2009
3 of 792
1.
Introduction
NXP Semiconductor designed the LPC2400 microcontrollers around a 16-bit/32-bit
ARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG and
embedded Trace. The LPC2400 microcontrollers have 512 kB of on-chip high-speed
Flash memory. This Flash memory includes a special 128-bit wide memory interface and
accelerator architecture that enables the CPU to execute sequential instructions from
Flash memory at the maximum 72 MHz system clock rate. This feature is available only
on the LPC2000 ARM Microcontroller family of products. The LPC2400 can execute both
32-bit ARM and 16-bit Thumb instructions. Support for the two Instruction Sets means
Engineers can choose to optimize their application for either performance or code size at
the sub-routine level. When the core executes instructions in Thumb state it can reduce
code size by more than 30 % with only a small loss in performance while executing
instructions in ARM state maximizes core performance.
The LPC2400 microcontrollers are ideal for multi-purpose communication applications. It
incorporates a 10/100 Ethernet Media Access Controller (MAC), a USB full speed
device/host/OTG controller with 4 kB of endpoint RAM, four UARTs, two Controller Area
Network (CAN) channels, an SPI interface, two Synchronous Serial Ports (SSP), three I
2
C
interfaces, and an I
2
S interface. Supporting this collection of serial communications
interfaces are the following feature components; an on-chip 4 MHz internal precision
oscillator, 98 kB of total RAM consisting of 64 kB of local SRAM, 16 kB SRAM for
Ethernet, 16 kB SRAM for general purpose DMA, 2 kB of battery powered SRAM, and an
External Memory Controller (EMC). These features make this device optimally suited for
communication gateways and protocol converters. Complementing the many serial
communication controllers, versatile clocking capabilities, and memory features are
various 32-bit timers, an improved 10-bit ADC, 10-bit DAC, two PWM units, four external
interrupt pins, and up to 160 fast GPIO lines. The LPC2400 connect 64 of the GPIO pins
to the hardware based Vector Interrupt Controller (VIC) that means these external inputs
can generate edge-triggered, interrupts. All of these features make the LPC2400
particularly suitable for industrial control and medical systems.
2.
How to read this manual
Important: The term “LPC24XX“ in this user manual will be used as a generic name for all
LPC2400 parts. It covers the following parts: LPC2458, LPC2420, LPC2460, LPC2468,
LPC2470, and LPC2478.
For information about individual parts refer to
UM10237
Chapter 1: LPC24XX Introductory information
Rev. 04 — 26 August 2009
User manual
Table 1.
LPC24XX overview
LPC2458
LPC2420/60
LPC2468
LPC2470
LPC2478
Features
Ordering options
Section 1–5.1 Section 1–5.2 Section 1–5.3 Section 1–5.4 Section 1–5.5
Block diagrams