原标题：Freescale KEA128 32位MCU CAN和马达控制方案

　　freescale公司的Kinetis EA系列MCU是基于ARM的可升级低功耗的32位MCU,采用高达48MHz ARM Cortex-M0+内核,具有单周期32位X32位的乘法器,工作电压2.7V-5.5V,闪存写电压范围2.7V-5.5V,工作温度-40 到125℃,主要用在汽车电子如HVAC,门窗和座位控制,环境灯控制,TPMS以及马达控制等.本文介绍了Kinetis EA系列MCU主要特性,框图, 以及用于CAN和BLDC/PMSM马达控制的TRK-KEA128开发平台主要特性,电路图和材料清单.

　　Kinetis EA series MCUs for automotive provide an automotive-grade, scalable, 32-bit portfolio with a broad ARM ecosystem for a wide range of automotive applications. The EA series is pin compatible with Freescale’s 8-bit S08RN family and include a powerful array of analog, communication and timing and control peripherals with specific Flash memory size and pin counts. This MCU series offers low-power, built on the ARM®-Cortex® M0+ core, high-robustness and cost-efficiency to provide automotive developers with an optimized ARM-based solution. This series was designed with EMC/ESD in mind to ensure strong noise immunity and low radiated emissions.

　　KEA128主要特性:

　　• Operating characteristics

　　– Voltage range: 2.7 to 5.5 V

　　– Flash write voltage range: 2.7 to 5.5 V

　　– Temperature range (ambient): -40 to 125℃

　　• Performance

　　– Up to 48 MHz ARMR Cortex-M0+ core

　　– Single cycle 32-bit x 32-bit multiplier

　　– Single cycle I/O access port

　　• Memories and memory interfaces

　　– Up to 128 KB flash

　　– Up to 16 KB RAM

　　• Clocks

　　– Oscillator (OSC) - supports 32.768 kHz crystal or 4 MHz to 24 MHz crystal or ceramic resonator; choice of low power or high gain oscillators

　　– Internal clock source (ICS) - internal FLL with internal or external reference, 37.5 kHz pretrimmed internal reference for 48 MHz system clock

　　– Internal 1 kHz low-power oscillator (LPO)

　　• System peripherals

　　– Power management module (PMC) with three power modes: Run, Wait, Stop

　　– Low-voltage detection (LVD) with reset or interrupt, selectable trip points

　　– Watchdog with independent clock source (WDOG)

　　– Programmable cyclic redundancy check module (CRC)

　　– Serial wire debug interface (SWD)

　　– Aliased SRAM bitband region (BIT-BAND)

　　– Bit manipulation engine (BME)

　　• Security and integrity modules

　　– 80-bit unique identification (ID) number per chip

　　• Human-machine interface

　　– Up to 71 general-purpose input/output (GPIO)

　　– Two 32-bit keyboard interrupt modules (KBI)

　　– External interrupt (IRQ)

　　• Analog modules

　　– One 16-channel 12-bit SAR ADC, operation in Stop mode, optional hardware trigger (ADC)

　　– Two analog comparators containing a 6-bit DAC and programmable reference input (ACMP)

　　• Timers

　　– One 6-channel FlexTimer/PWM (FTM)

　　– Two 2-channel FlexTimer/PWM (FTM)

　　– One 2-channel periodic interrupt timer (PIT)

　　– One pulse width timer (PWT)

　　– One real-time clock (RTC)

　　• Communication interfaces

　　– Two SPI modules (SPI)

　　– Three UART modules (UART)

　　– Two I2C modules (I2C)

　　– One MSCAN module (MSCAN)

　　• Package options

　　– 80-pin LQFP

　　– 64-pin LQFP

　　图1. Kinetis EA系列MCU框图

　　Kinetis EA系列目标应用:

　　Automotive

　　Heating Ventilation and Air Conditioning (HVAC)

　　Doors, Window Lift and Seat Control

　　Parking Brakes

　　Electric Pumps, Motor Control and Auxiliaries

　　Power Sun Roof Modules

　　Park Exit Assist

　　Infotainment Gateway

　　Ambient Lighting Control

　　Battery Chargers and Management

　　Tire Pressure Monitoring System (TPMS)

　　Motor Control

　　Brushless DC (BLDC) Motor

　　TRK-KEA128: 用于CAN和BLDC/PMSM马达控制的KEA128 StarterTRAK入门板

　　StarterTRAK is a low-cost development kit based on Kinetis EA series MCUs that enables rapid prototyping and tool reuse.

　　The TRK-KEA128 development platform for the Kinetis EA series 32-bit ARM®-based MCUs is the most robust of this series featuring 128 KB of Flash and CAN module for body applications. These scalable and low-power devices are supported by a broad enablement ecosystem that includes software drivers, operating systems, example codes and application notes to help you quickly implement your designs.

　　图2. TRK-KEA128开发平台外形图

　　TRK-KEA128开发平台主要特性:

　　Kinetis KEA128 MCU in a 80 LQFP package

　　On-board openSDA debugging and programming circuit using the PK20DX128 MCU

　　LIN communications interface

　　Analog interface with ambient light sensor

　　4 high efficiency LEDs

　　2 push buttons

　　SCI serial communication interface (sharing the openSDA interface)

　　CAN communications interface

　　TRK-KEA128开发平台包括:

　　TRK-KEA128 Board

　　TRK-KEA DVD (includes CodeWarrior software)

　　USB cable

　　TRK-KEA Quick Start Guide

　　Freescale Warranty Card