Freescale Kinetis KEA128汽车光控制模块参考设计

Freescale Kinetis KEA128汽车光控制模块参考设计

Freescale Kinetis KEA128汽车光控制模块参考设计

关键字：ARM Cortex－M0+ MCU,汽车电子,马达控制,KEA128

Freescale公司的Kinetis KEA128系列产品是基于ARM Cortex-M0+内核的MCU,工作频率48MHz,单周期32位x32位乘法器,多达128KB闪存,256B EEPROM和16KB RAM,工作电压2.7V-5.5V,闪存写电压2.7V-5.5V,工作温度–40℃C 到+125℃,主要用在汽车娱乐连接模块,DC/BLDC马达控制,TPMS,电动摩托车CDI/EFI,电池管理,泵/风扇控制,窗/门/天窗控制,BCM/HVAC和座位/雨刷控制等.本文介绍了Kinetis KEA128主要特性和框图,以及汽车光控制模块KEA128LEDLIGHTRD主要特性,框图和电路图.

Kinetis EA series MCUs for automotive provide cost-effective ARM®-based solution for a wide range of automotive applications and are pin-compatible across the Kinetis EA series and with future Kinetis automotive families.

This series includes a set of analog, communication, timing and control peripherals with varying flash memory size and pin count. These scalable devices are highly robust, and offer an enhanced ESD/EMC performance solution for cost-sensitive automotive applications. This series is supported by development tools, software and hardware references to help you quickly start designing.

Kinetis 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 ARM 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 256 B EEPROM

? Up to 16 KB RAM

Clocks

? Oscillator (OSC)—loop-controlled Pierce oscillator, crystal or ceramic resonator range of 31.25 kHz to 39.0625 kHz or 4 MHz to 24 MHz

? Internal clock source (ICS)—internal FLL with internal or external reference, precision trimming of internal reference allowing 1% deviation across temperature range of –30 ℃ to 85 ℃ and 1.5% deviation across temperature

Freescale Kinetis KEA128汽车光控制模块参考设计

range of –40 ℃ to 125 ℃, up to 48 MHz

? 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)

? Bit manipulation engine (BME)

Security and Integrity Modules

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

Human-machine interface (HMI)

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

? Up to two 32-bit keyboard interrupt modules (KBI)

? External interrupt (IRQ)

Analog Modules

? One 12 bit with up to 16 channel SAR ADC with internal band gap reference channel, 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)

? Up to two 2-channel FlexTimer/PWM (FTM)

? One 2-channel periodic interrupt timer (PIT)

? One real-time clock (RTC)

? Up to one 16-bit pulse width timer

Kinetis KEA128目标应用:

? Infotainment connection module

? Park assistance

? DC/BLDC motor control

? Electronic park brake

? TPMS

? Motorcycle CDI/EFI

? Battery management

? Pump/fan controller

? Passive entry push start

? Ambient lighting

? BCM/HVAC

? Windows/door/sun roof

? Seats/mirror/wiper

? Immobilizer

? Powertrain companion chip

Freescale Kinetis KEA128汽车光控制模块参考设计

? Generic sensor node

图1. Kinetis KEA128系列MCU框图

KEA128LEDLIGHTRD光控制模块参考设计

KEA128LEDLIGHTRD: Light Control Module Reference Design Based on Kinetis EA MCU and E-switch (MC10XS3425)

The lighting control reference design is built on a Kinetis KEA128 32-bit ARM® Cortex®-M0+ automotive-grade MCU. Overall hardware solution includes Kinetis KEA128 MCU, MC10XS3425EK quad high-side driver chips MC33901 CAN transceiver and MC33662 LIN transceiver chips. This covers LIN and CAN communication-based complete headlight environment control solution, including LEDs, tail lights, turn signals, lamp current control and diagnostics.

Hardware board is available for purchase to evaluate this solution and it includes a SWD connector interface to debug the SW provided. In addition, a lighting connector interface is available to increase the number of lights controlled through this solution.

KEA128LEDLIGHTRD光控制模块参考设计主要特性:

32-bit KEA128 MCU in 64 LQFP package

MC33662 LIN transceiver

MC33901 CAN transceiver

MC10XS3425EK multi-chip high-side switch

4 LEDs

Freescale Kinetis KEA128汽车光控制模块参考设计

4 Potentiometers

4 User buttons

SWD connector interface for debugging Light connector interface

KEA128LEDLIGHTRD光控制模块参考设计包括:

? Kinetis KEA128LEDLIGHTRD board ? DVD

? Quick Start Guide

图2. KEA128LEDLIGHTRD光控制模块参考设计框图

Freescale Kinetis KEA128汽车光控制模块参考设计

图3. KEA128LEDLIGHTRD光控制模块参考设计电路图(1)

图4. KEA128LEDLIGHTRD光控制模块参考设计电路图(2)