1. General description
The LPC178x/7x is an ARM Cortex-M3 based microcontroller for embedded applications
requiring a high level of integration and low power dissipation.
The ARM Cortex-M3 is a next generation core that offers better performance than the
ARM7 at the same clock rate and other system enhancements such as modernized
debug features and a higher level of support block integration. The ARM Cortex-M3 CPU
incorporates a 3-stage pipeline and has a Harvard architecture with separate local
instruction and data buses, as well as a third bus with slightly lower performance for
peripherals. The ARM Cortex-M3 CPU also includes an internal prefetch unit that
supports speculative branches.
The LPC178x/7x adds a specialized flash memory accelerator to accomplish optimal
performance when executing code from flash. The LPC178x/7x operates at up to
120 MHz CPU frequency.
The peripheral complement of the LPC178x/7x includes up to 512 kB of flash program
memory, up to 96 kB of SRAM data memory, up to 4032 byte of EEPROM data memory,
External Memory Controller (EMC), LCD (LPC178x only), Ethernet, USB
Device/Host/OTG, a General Purpose DMA controller, five UARTs, three SSP controllers,
three I
2
C-bus interfaces, a Quadrature Encoder Interface, four general purpose timers,
two general purpose PWMs with six outputs each and one motor control PWM, an
ultra-low power RTC with separate battery supply and event recorder, a windowed
watchdog timer, a CRC calculation engine, up to 165 general purpose I/O pins, and more.
The analog peripherals include one eight-channel 12-bit ADC and a 10-bit DAC.
The pinout of LPC178x/7x is intended to allow pin function compatibility with the LPC24xx
and LPC23xx.
For additional documentation, see Section 18 “
References”.
2. Features and benefits
Functional replacement for the LPC23xx and LPC24xx family devices.
System:
ARM Cortex-M3 processor, running at frequencies of up to 120 MHz. A Memory
Protection Unit (MPU) supporting eight regions is included.
ARM Cortex-M3 built-in Nested Vectored Interrupt Controller (NVIC).
LPC178x/7x
32-bit ARM Cortex-M3 microcontroller; up to 512 kB flash and
96 kB SRAM; USB Device/Host/OTG; Ethernet; LCD; EMC
Rev. 5 — 9 September 2014 Product data sheet
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extern12342015-07-30不错的资料，很全面，学习了谢谢分
