ARM微控制器 - MCU 32-bit ARM Cortex-M3 Microcontroller Unit
Overview
The LPC185x/3x/2x/1x are ARM Cortex-M3 based microcontrollers for embedded applications. The ARM Cortex-M3 is a next generation core that offers system enhancements such as low power consumption, enhanced debug features, and a high level of support block integration.
The LPC185x/3x/2x/1x operate at CPU frequencies of up to 180 MHz. The ARM Cortex-M3 CPU incorporates a 3-stage pipeline and uses a Harvard architecture with separate local instruction and data buses as well as a third bus for peripherals. The ARM Cortex-M3 CPU also includes an internal prefetch unit that supports speculative branching.
The LPC185x/3x/2x/1x include up to 1 MB of flash and 136 kB of on-chip SRAM, 16 kB of EEPROM memory, a quad SPI Flash Interface SPIFI, a State Configurable Timer SCT subsystem, two High-speed USB controllers, Ethernet, LCD, an external memory controller, and multiple digital and analog peripherals.
MoreLess
## Features
* Processor core
* ARM Cortex-M3 processor, running at CPU frequencies of up to 180 MHz
* ARM Cortex-M3 built-in Memory Protection Unit MPU supporting eight regions
* ARM Cortex-M3 built-in Nested Vectored Interrupt Controller NVIC
* Non-maskable Interrupt NMI input
* JTAG and Serial Wire Debug, serial trace, eight breakpoints, and four watch points
* Enhanced Trace Module ETM and Enhanced Trace Buffer ETB support
* System tick timer
* On-chip memory
* Up to 1 MB on-chip dual bank flash memory with flash accelerator
* 16 kB on-chip EEPROM data memory
* 136 kB SRAM for code and data use
* Multiple SRAM blocks with separate bus access
* 64 kB ROM containing boot code and on-chip software drivers
* 64 bit of One-Time Programmable OTP memory for general-purpose use
* Clock generation unit
* Crystal oscillator with an operating range of 1 MHz to 25 MHz
* 12 MHz internal RC oscillator trimmed to 2 % accuracy over temperature and voltage 1 % accuracy for Tamb = 0 °C to 85 °C
* Ultra-low power RTC crystal oscillator
* Three PLLs allow CPU operation up to the maximum CPU rate without the need for a high-frequency crystal. The second PLL can be used with the High-speed USB, the third PLL can be used as audio PLL
* Clock output
* Configurable digital peripherals
* State Configurable Timer SCT subsystem on AHB
* Global Input Multiplexer Array GIMA allows to cross-connect multiple inputs and outputs to event driven peripherals like timers, SCT, and ADC0/1
* Serial interfaces
* Quad SPI Flash Interface SPIFI with 1-, 2-, or 4-bit data at rates of up to 52 MB per second
* 10/100T Ethernet MAC with RMII and MII interfaces and DMA support for high throughput at low CPU load. Support for IEEE 1588 time stamping/advanced time stamping IEEE 1588-2008 v2
* One High-speed USB 2.0 Host/Device/OTG interface with DMA support and on-chip high-speed PHY USB0
* One High-speed USB 2.0 Host/Device interface with DMA support, on-chip full-speed PHY and ULPI interface to an external high-speed PHY USB1
* USB interface electrical test software included in ROM USB stack
* Four 550 UARTs with DMA support: one UART with full modem interface; one UART with IrDA interface; three USARTs support UART synchronous mode and a smart card interface conforming to ISO7816 specification
* Up to two C_CAN 2.0B controllers with one channel each. Use of C_CAN controller excludes operation of all other peripherals connected to the same bus bridge
* Two SSP controllers with FIFO and multi-protocol support. Both SSPs with DMA support
* One Fast-mode Plus I²C-bus interface with monitor mode and with open-drain I/O pins conforming to the full I²C-bus specification. Supports data rates of up to 1 Mbit/s
* One standard I²C-bus interface with monitor mode and standard I/O pins
* Two I²S interfaces with DMA support, each with one input and one output
* Digital peripherals
* External Memory Controller EMC supporting external SRAM, ROM, NOR flash, and SDRAM devices
* LCD controller with DMA support and a programmable display resolution of up to 1024H x 768V. Supports monochrome and color STN panels and TFT color panels; supports 1/2/4/8 bpp Color Look-Up Table CLUT and 16/24-bit direct pixel mapping
* SD/MMC card interface
* Eight-channel General-Purpose DMA controller can access all memories on the AHB and all DMA-capable AHB slaves
* Up to 164 General-Purpose Input/Output GPIO pins with configurable pull-up/pull-down resistors
* GPIO registers are located on the AHB for fast access. GPIO ports have DMA support
* Up to eight GPIO pins can be selected from all GPIO pins as edge and level sensitive interrupt sources
* Two GPIO group interrupt modules enable an interrupt based on a programmable pattern of input states of a group of GPIO pins
* Four general-purpose timer/counters with capture and match capabilities
* One motor control PWM for three-phase motor control
* One Quadrature Encoder Interface QEI
* Repetitive Interrupt timer RI timer
* Windowed watchdog timer
* Ultra-low power Real-Time Clock RTC on separate power domain with 256 bytes of battery powered backup registers
* Event recorder with three inputs to record event identification and event time; can be battery powered
* Alarm timer; can be battery powered
* Analog peripherals
* One 10-bit DAC with DMA support and a data conversion rate of 400 kSamples/s
* Two 10-bit ADCs with DMA support and a data conversion rate of 400 kSamples/s. Up to eight analog channels total. Each analog input is connected to both ADCs
* Unique ID for each device
* Power
* Single 3.3 V 2.2 V to 3.6 V power supply with on-chip internal voltage regulator for the core supply and the RTC power domain
* RTC power domain can be powered separately by a 3 V battery supply
* Four reduced power modes: Sleep, Deep-sleep, Power-down, and Deep power-down
* Processor wake-up from Sleep mode via wake-up interrupts from various peripherals
* Wake-up from Deep-sleep, Power-down, and Deep power-down modes via external interrupts and interrupts generated by battery powered blocks in the RTC power domain
* Brownout detect with four separate thresholds for interrupt and forced reset
* Power-On Reset POR
* Available in LQFP208, LBGA256, LQFP144, and TFBGA100 packages
## Target Applications
* Industrial
* Consumer
* White goods
* RFID readers
* e-Metering
## Features