原标题：汽车空调解决方案

　　方案简介

　　汽车自动空调系统是实现对车厢内空气进行制冷、加热、换气和空气净化的装置。可以自动收集车内外温度、湿度等一系列信号，传递给控制器，按一定的数学模式计算，并自动调节以获得最佳空调运行模式。

　　主要包括以下模块：

　　1、人机界面：LCD显示与键盘输入;

　　2、信号采集：外部传感器实时采集车内车外温度，传给控制器;

　　3、MCU控制器：对输入数据运算并输出控制执行器;

　　4、输出控制：风门模式控制、调试模块、风道控制等;

　　方案图片：

　　方案框图：

　　方案规格参数：

　　MCU采用ST汽车级8位控制器 STM8AF51x

　　主频：24MHz

　　Flash：32K+

　　ADC通道：10bit 10/16个

　　定时器：1个8bit

　　通讯接口：UART 1

　　IIC 1

　　SPI 1

　　CAN 1

　　风道控制电机驱动：BD16925EFV(2ch)

　　BD16910EFV(1ch)

　　BD16925EFV

　　耐压：Max 60V

　　输入电压：-0.3~+20V

　　工作电压：8~16V

　　输出电流：1A/ch

　　内置反接、过压、过流、过温保护

　　工作温度：-40~+110°C

　　封装：HTSSOP-B24

　　BD16910EFV

　　耐压：Max 60V

　　输入电压：-0.3~+20V

　　工作电压：6~28V

　　输出电流：1A/ch

　　内置反接、过压、过流、过温保护

　　工作温度：-40~+110°C

　　封装：HTSSOP-B20

　　The STM8AF526x/8x/Ax and STM8AF6269/8x/Ax automotive 8-bit microcontrollers described in this datasheet offer from 32 Kbyte to 128 Kbyte of non volatile memory and integrated true data EEPROM. They are referred to as high density STM8A devices in STM8S series and STM8AF series 8-bit microcontrollers reference manual (RM0016).

　　The STM8AF52 series features a CAN interface.

　　All devices of the STM8A product line provide the following benefits: reduced system cost, performance and robustness, short development cycles, and product longevity.

　　The system cost is reduced thanks to an integrated true data EEPROM for up to 300 k write/erase cycles and a high system integration level with internal clock oscillators, wtachdog, and brown-out reset.

　　Device performance is ensured by 20 MIPS at 24 MHz CPU clock frequency and enhanced characteristics which include robust I/O, independent watchdogs (with a separate clock source), and a clock security system.

　　Short development cycles are guaranteed due to application scalability across a common family product architecture with compatible pinout, memory map, and modular peripherals. Full documentation is offered with a wide choice of development tools.

　　Product longevity is ensured in the STM8A family thanks to their advanced core which is made in a state-of-the art technology for automotive applications with 3.3 V to 5.5 V operating supply.

　　All STM8A and ST7 microcontrollers are supported by the same tools including STVD/STVP development environment, the STice emulator and a low-cost, third party in-circuit debugging tool.

　　主要特性

　　AEC-Q10x qualified

　　Core

　　Max fCPU: 24 MHz

　　Advanced STM8A core with Harvard architecture and 3-stage pipeline

　　Average 1.6 cycles/instruction resulting in 10 MIPS at 16 MHz fCPUfor industry standard benchmark

　　Memories

　　Program memory: 32 to 128 Kbyte Flash program; data retention 20 years at 55 °C

　　Data memory: up to 2 Kbyte true data EEPROM; endurance 300 kcycle

　　RAM: 6 Kbyte

　　Clock management

　　Low-power crystal resonator oscillator with external clock input

　　Internal, user-trimmable 16 MHz RC and low-power 128 kHz RC oscillators

　　Clock security system with clock monitor

　　Reset and supply management

　　Wait/auto-wakeup/Halt low-power modes with user definable clock gating

　　Low consumption power-on and power-down reset

　　Interrupt management

　　Nested interrupt controller with 32 vectors

　　Up to 37 external interrupts on 5 vectors

　　Timers

　　2 general purpose 16-bit timers with up to 3 CAPCOM channels each (IC, OC, PWM)

　　Advanced control timer: 16-bit, 4 CAPCOM channels, 3 complementary outputs, dead-time insertion and flexible synchronization

　　8-bit AR basic timer with 8-bit prescaler

　　Auto-wakeup timer

　　Window and independent watchdog timers

　　I/Os

　　Up to 68 user pins (11 high sink I/Os)

　　Highly robust I/O design, immune against current injection

　　Communication interfaces

　　High speed 1 Mbit/s CAN 2.0B interface

　　USART with clock output for synchronous operation - LIN master mode

　　LINUART LIN 2.2 compliant, master/slave modes with automatic resynchronization

　　SPI interface up to 10 Mbit/s or fMASTER/2

　　I2C interface up to 400 Kbit/s

　　Analog to digital converter (ADC)

　　10-bit resolution, 2 LSB TUE, 1 LSB linearity and up to 16 multiplexed channels

　　Operating temperature up to 150 °C

　　Qualification conforms to AEC-Q100 grade 0