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当前位置：首页 -> 方案设计 |
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| KEA128 汽车光控制模块参考设计 |
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| 文章来源： 更新时间：2014/11/5 11:01:00 |
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Freescale公司的Kinetis EA系列MCU是基于ARM核的高成本效益的汽车电子解决方案,适用于汽车各种应用如娱乐连接模块,停车辅助,DC/BLDC马达控制,TPMS,电动自行车CDI/EFI,电池管理,泵/风扇控制器,环境照明,BCM/HVAC,车窗/门/车顶,座位/镜/雨刷,动力总成姐妹芯片,传感器节点和发动机防盗系统.本文介绍了KEA128主要特性,框图,以及光控制模块参考设计KEA128LEDLIGHTRD主要特性和框图,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.
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 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 pre-trimmed 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 up to 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)
– Up to three UART modules (UART)
– Two I2C modules (I2C)
– One MSCAN module (MSCAN)
• Package options
– 80-pin LQFP
– 64-pin LQFP
图1. KEA128框图
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
• Generic sensor node
光控制模块参考设计KEA128LEDLIGHTRD
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.
光控制模块参考设计KEA128LEDLIGHTRD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
4 Potentiometers
4 User buttons
SWD connector interface for debugging
Light connector interface
图2. 光控制模块参考设计KEA128LEDLIGHTRD外形图
光控制模块包括:
KEA128LEDLIGHTRD DVD
KEA128LEDLIGHTRD Quick Start Guide
KEA128LEDLIGHTRD Board
图3. 光控制模块参考设计KEA128LEDLIGHTRD电路图(1)
图4. 光控制模块参考设计KEA128LEDLIGHTRD电路图(2)
图5. 光控制模块参考设计KEA128LEDLIGHTRD电路图(3)
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