1. General description
The LPC2364/66/68 microcontrollers are based on a 16-bit/32-bit
ARM7TDMI-S CPU with
real-time emulation that combines the microcontroller with up to
512 kB of embedded
high-speed flash memory. A 128-bit wide memory interface and a
unique accelerator
architecture enable 32-bit code execution at the maximum clock
rate. For critical
performance in interrupt service routines and DSP algorithms, this
increases performance
up to 30 % over Thumb mode. For critical code size applications,
the alternative 16-bit
Thumb mode reduces code by more than 30 % with minimal performance
penalty.
The LPC2364/66/68 are ideal for multi-purpose serial communication
applications. They
incorporate a 10/100 Ethernet Media Access Controller (MAC), USB
full speed device
with 4 kB Endpoint RAM, four UARTs, two CAN channels, an SPI
interface, two
Synchronous Serial Ports (SSP), three I2C interfaces, and an I2S
interface. This blend of
serial communications interfaces combined with an on-chip 4 MHz
internal oscillator,
SRAM of up to 32 kB, 16 kB SRAM for Ethernet, 8 kB SRAM for USB and
general
purpose use, together with 2 kB battery powered SRAM make these
devices very well
suited for communication gateways and protocol converters. Various
32-bit timers, an
improved 10-bit ADC, 10-bit DAC, one PWM unit, a CAN control unit,
and up to 70 fast
GPIO lines with up to 12 edge or level sensitive external interrupt
pins make these
microcontrollers particularly suitable for industrial control and
medical systems.
2. Features
♦ ARM7TDMI-S processor, running at up to 72 MHz.
♦ Up to 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.
♦ 8/32 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.
♦ 8 kB SRAM for general purpose DMA use also accessible by the USB.
♦ Dual AHB system that provides for simultaneous Ethernet DMA, USB
DMA, and
program execution from on-chip Flash with no contention between
those functions. A
bus bridge allows the Ethernet DMA to access the other AHB
subsystem.
♦ Advanced Vectored Interrupt Controller, supporting up to 32
vectored interrupts.
♦ General Purpose AHB DMA controller (GPDMA) that can be used with
the SSP serial
interfaces, the I2S port, and the SD/MMC card port, as well as for
memory-to-memory
transfers.
3. Applications
♦ Industrial control
♦ Medical systems
♦ Protocol converter
♦ Communications
