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1、NXP LPC81xM 32位ARM CortexM0+ MCU开发方案关键字：ARM CortexM0+ MCU,消费类电子,马达控制,火警和安防,气候控制,照明NXP公司的LPC81xM系列产品是基于ARM Cortex-M0+内核的低成本32位MCU,CPU工作频率高达30MHz,支持高达16KB闪存和4KB SRAM,外设包括CRC引擎,I2C总线接口,多达三个UART,多达两个SPI接口,一个多速率定时器,自叫醒定时器和状态可配置的定时器,一个比较器,功能可配置的I/O端口和多达18个通用I/O引脚,主要用于照明, 消费类电子,马达控制,火警和安防和气候控制.本文介绍了LPCXpre
2、sso812 MAX主要特性和优势,框图, 评估板LPCXpresso812-MAX主要特性和电路图.The LPC81xM are an ARM Cortex-M0+ based, low-cost 32-bit MCU family operating at CPU frequencies of up to 30 MHz. The LPC81xM support up to 16 kB of flash memory and 4 kB of SRAM.The peripheral complement of the LPC81xM includes a CRC engine, one I2
3、C-bus interface, up to three USARTs, up to two SPI interfaces, one multi-rate timer, self wake-up timer, and state-configurable timer, one comparator, function-configurable I/O ports through a switch matrix, an input pattern match engine, and up to 18 general-purpose I/O pins.LPCXpresso812 MAX主要特性和优
4、势: System:n ARM Cortex-M0+ processor, running at frequencies of up to 30 MHz with single-cycle multiplier and fast single-cycle I/O port.u ARM Cortex-M0+ built-in Nested Vectored Interrupt Controller (NVIC).u System tick timer.u Serial Wire Debug (SWD) and JTAG boundary scan modes supported.u Micro
5、Trace Buffer (MTB) supported.u Memory:n Up to 16 kB on-chip flash programming memory with 64 Byte page write and erase.u Up to 4 kB SRAM.u ROM API support:n Boot loader.u USART drivers.u I2C drivers.u Power profiles.u Flash In-Application Programming (IAP) and In-System Programming (ISP).u Digital p
6、eripherals:n High-speed GPIO interface connected to the ARM Cortex-M0+ IO bus with up to 18 General-Purpose I/O (GPIO) pins with configurable pull-up/pull-down resistors, programmable open-drain mode, input inverter, and glitch filter.u High-current source output driver (20 mA) on four pins.u High-c
7、urrent sink driver (20 mA) on two true open-drain pins.u GPIO interrupt generation capability with boolean pattern-matching feature on eight GPIO inputs.u Switch matrix for flexible configuration of each I/O pin function.u State Configurable Timer/PWM (SCTimer/PWM) with input and output functions (i
8、ncluding capture and match) assigned to pins through the switch matrix.u Multiple-channel multi-rate timer (MRT) for repetitive interrupt generation at up to four programmable, fixed rates.u Self Wake-up Timer (WKT) clocked from either the IRC or a low-power, low-frequency internal oscillator.u CRC
9、engine.u Windowed Watchdog timer (WWDT).u Analog peripherals:n Comparator with internal and external voltage references with pin functions assigned or enabled through the switch matrix.u Serial interfaces:n Three USART interfaces with pin functions assigned through the switch matrix.u Two SPI contro
10、llers with pin functions assigned through the switch matrix.u One I2C-bus interface with pin functions assigned through the switch matrix.u Clock generation:n 12 MHz internal RC oscillator trimmed to 1.5 % accuracy that can optionally be used as a system clock.u Crystal oscillator with an operating
11、range of 1 MHz to 25 MHz.u Programmable watchdog oscillator with a frequency range of 9.4 kHz to 2.3 MHz.u 10 kHz low-power oscillator for the WKT.u PLL allows CPU operation up to the maximum CPU rate without the need for a high-frequency crystal. May be run from the system oscillator, the external
12、clock input CLKIN, or the internal RCu oscillator. Clock output function with divider that can reflect the crystal oscillator, the main clock, the IRC, or the watchdog oscillator.u Power control:n Integrated PMU (Power Management Unit) to minimize power consumption.uReduced power modes: Sleep mode,
13、Deep-sleep mode, Power-down mode, and Deep power-down mode.uWake-up from Deep-sleep and Power-down modes on activity on USART, SPI, and I2C peripherals.u Timer-controlled self wake-up from Deep power-down mode.u Power-On Reset (POR).u Brownout detect.u Unique device serial number for identification.
14、n Single power supply.n Operating temperature range -40 to 105 except for the DIP8 package, which is available for a temperature range of -40 to 85 .n Available as DIP8, TSSOP16, SO20, TSSOP20, and XSON16 packagenLPCXpresso812 MAX应用: 8/16-bit applicationsn Lightingn Consumern Motor controln Climate
15、controln Fire and security applicationsn图1. LPCXpresso812 MAX框图评估板LPCXpresso812-MAXThe LPCXpresso812-MAX board with NXPs LPC812 Cortex-M0+ microcontroller is designed to make it as easy as possible to get started with your project.LPCXpresso is a low-cost development platform available from NXP, sup
16、porting NXPs ARM-based microcontrollers. The platform is comprised of a simplified Eclipse-based IDE and low-cost target boards which include an attached JTAG debugger. LPCXpresso is an end-to-end solution enabling embedded engineers to develop their applications from initial evaluation to final production.评估板LPCXpresso812-MA
