原标题：ST STM32F072 ARM Cortex-M0 32位MCU解决方案

　　ST公司的STM32F072是高性能基于 ARM Cortex-M0 32位RISC内核的MCU,工作频率高达48MHz,具有高速嵌入存储器(高达128KB的闪存和16KB SRAM)以及各种增强性外设和I/O,提供标准的通信接口,USB全速器件,CAN,12位ADC和12位DAC以及7个通用16位计时器,32位计时器和高端控制PWM定时器, 主要用在应用控制和用户接口,手持社,A/V接收器和数字TV,PC外设,游戏和GPS平台,PLC,逆变器,打印机,扫描仪,告警系统视频互连和 HVAC.本文介绍了STM32F072xx 主要特性,框图, 评估板STM32072B-EVAL主要特性,框图,元件布局图,电路图和材料清单.

　　The STM32F072xx microcontrollers incorporate the high-performance ARM Cortex™-M0 32-bit RISC core operating at a 48 MHz frequency, high-speed embedded memories (up to 128 Kbytes of Flash memory and 16 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os. All devices offer standard communication interfaces (two I2Cs, two SPIs/I2S, one HDMI CEC and four USARTs), one USB Full speed device (crystal-less), one CAN, one 12-bit ADC, one 12-bit DAC with two channels, seven general-purpose 16-bit timers, a 32-bit timer and an advanced-control PWM timer.

　　The STM32F072xx microcontrollers operate in the -40 to +85 ℃ and -40 to +105 ℃ temperature ranges from a 2.0 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.

　　The STM32F072xx microcontrollers include devices in six different packages ranging from 48 pins to 100 pins with a die form also available upon request. Depending on the device chosen, different sets of peripherals are included. The description below provides an overview of the complete range of STM32F072xx peripherals proposed.

　　These features make the STM32F072xx microcontrollers suitable for a wide range of applications such as application control and user interfaces, handheld equipment, A/V receivers and digital TV, PC peripherals, gaming and GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms, and HVACs.

　　STM32F072xx 主要特性:

　　Core: ARM®32-bit Cortex™-M0 CPU, frequency up to 48 MHz

　　Memories

　　64 to 128 Kbytes of Flash memory

　　16 Kbytes of SRAM with HW parity checking

　　CRC calculation unit

　　Reset and power management

　　Voltage range: 2.0 V to 3.6 V

　　Power-on/Power down reset (POR/PDR)

　　Programmable voltage detector (PVD)

　　Low power modes: Sleep, Stop, Standby

　　VBATsupply for RTC and backup registers

　　Clock management

　　4 to 32 MHz crystal oscillator

　　32 kHz oscillator for RTC with calibration

　　Internal 8 MHz RC with x6 PLL option

　　Internal 40 kHz RC oscillator

　　Internal 48 MHz oscillator with automatic trimming based on ext. synchronization

　　Up to 87 fast I/Os

　　All mappable on external interrupt vectors

　　Up to 68 I/Os with 5V tolerant capability and 19 with independent supply VDDIO2

　　7-channel DMA controller

　　One 12-bit, 1.0 μs ADC (up to 16 channels)

　　Conversion range: 0 to 3.6 V

　　Separate analog supply from 2.4 up to 3.6

　　One 12-bit D/A converter (with 2 channels)

　　Two fast low-power analog comparators with programmable input and output

　　Up to 24 capacitive sensing channels for touchkey, linear and rotary touch sensors

　　Calendar RTC with alarm and periodic wakeup from Stop/Standby

　　12 timers

　　One 16-bit advanced-control timer for 6 channel PWM output

　　One 32-bit and seven 16-bit timers, with up to 4 IC/OC, OCN, usable for IR control decoding or DAC control

　　Independent and system watchdog timers

　　SysTick timer

　　Communication interfaces

　　Two I2C interfaces supporting Fast Mode Plus (1 Mbit/s) with 20 mA current sink; one supporting SMBus/PMBus and wakeup

　　Four USARTs supporting master synchronous SPI and modem control; two with ISO7816 interface, LIN, IrDA, auto baud rate detection and wakeup feature

　　Two SPIs (18 Mbit/s) with 4 to 16 programmable bit frames, and with I2S interface multiplexed

　　CAN interface

　　USB 2.0 full-speed interface, able to run from internal 48 MHz oscillator and with BCD and LPM support

　　HDMI CEC wakeup on header reception

　　Serial wire debug (SWD)

　　96-bit unique ID

　　All packages ECOPACK®2

　　图1. STM32F072xx框图

　　评估板STM32072B-EVAL

　　Evaluation board for STM32F0 series - with STM32F072VB MCU

　　The STM32072B-EVAL evaluation board is designed as complete demonstration and development platform for STMicroelectronics ARM cortex-M0 core-based STM32F072VBT6 microcontroller with two I2C, two SPI, four USART, one CAN, 12-bit ADC, 12-bit DAC, two GP comparators, internal 16KB SRAM and 128KB Flash, USB FS, Touch sensing, CEC, SWD debugging support.

　　The full range of hardware features on the board is designed for the evaluation of all the peripherals and the development of user-specific applications. Extension headers are used to easily connect a daughter board or a wrapping board for user-specific applications.

　　The ST-LINK/V2 is integrated on the board as embedded in-circuit debugger and programmer for the STM32 MCU.

　　评估板STM32072B-EVAL主要特性:

　　Four 5 V power supply options: power jack, ST-LINK/V2 USB connector, user USB connector or daughter board

　　Stereo audio jack which supports a headset with microphone connected to DAC and ADC of STM32F072VBT6.

　　2G Byte (or more) SPI interface MicroSD card

　　I2C compatible serial interface temperature sensor

　　RF E2PROM

　　RS232 and RS485 communication

　　IrDA transceiver

　　IR LED and IR receiver

　　SWD debug support, ST-LINK/V2 embedded

　　240x320 TFT color LCD connected to SPI interface of STM32F072VBT6

　　Joystick with 4-direction control and selector

　　Reset and tamper buttons

　　Four color user LEDs and two LEDs as MCU low power alarm

　　Extension connector for daughter board or wrapping board

　　MCU voltage choice fixed 3.3 V or adjustable from 1.65 V to 3.6 V

　　USB full-speed connector

　　Touch sensing buttons

　　RTC with backup battery

　　CAN2.0A/B compliant connector

　　Light Dependent Resistor (LDR)

　　Potentiometer

　　Two HDMI connectors with DDC and CEC

　　Smart Card slot

　　Motor control connector

　　图2. 评估板STM32072B-EVAL外形图

　　图3. 评估板STM32072B-EVAL框图