原标题：大联大品佳集团推出基于NXP和Microchip产品的多通道汽车大灯解决方案

　　2016年8月9日，致力于亚太地区市场的领先半导体元器件分销商---大联大控股宣布，其旗下品佳集团推出基于恩智浦(NXP)ASL3315、ASL4500和Microchip PIC18F25K8-E/SS的多通道汽车大灯解决方案。

　　图示1-大联大品佳推出的基于NXP和Microchip产品的多通道汽车大灯解决方案系统框架图

　　相似料号：

　　PIC18F25K20

　　Features:

　　C Compiler Optimized Architecture:

　　Optional extended instruction set designed to optimize re-entrant code

　　Up to 1024 bytes Data EEPROM

　　Up to 64 Kbytes Linear program memory addressing

　　Up to 3936 bytes Linear data memory addressing

　　Up to 16 MIPS operation

　　High Performance RISC CPU:

　　C Compiler Optimized Architecture:

　　Optional extended instruction set designed to optimize re-entrant code

　　Up to 1024 bytes Data EEPROM

　　Up to 64 Kbytes Linear program memory addressing

　　Up to 3936 bytes Linear data memory addressing

　　Up to 16 MIPS operation

　　16-bit wide instructions, 8-bit wide data path

　　Priority levels for interrupts

　　31-level, software accessible hardware stack

　　8 x 8 single-cycle hardware multiplier

　　Flexible Oscillator Structure:

　　Precision 16 MHz internal oscillator block:

　　Factory calibrated to ± 1%

　　Software selectable frequencies range of 31 kHz to 16 MHz

　　64 MHz performance available using PLL

　　no external components required

　　Four crystal modes up to 64 MHz

　　Two external clock modes up to 64 MHz

　　4X Phase Lock Loop (PLL)

　　Secondary oscillator using Timer1 @ 32 kHz

　　Fail-Safe Clock Monitor:

　　Allows for safe shutdown if peripheral clock

　　stops

　　Two-Speed Oscillator Start-up

　　Special Microcontroller Features:

　　Operating Voltage Range: 1.8V to 3.6V

　　Self-Programmable under Software Control

　　Programmable 16-Level High/Low-Voltage

　　Detection (HLVD) module:

　　Interrupt on High/Low-Voltage Detection

　　Programmable Brown-out Reset (BOR):

　　With software enable option]

　　Extended Watchdog Timer (WDT):

　　Programmable period from 4 ms to 131s

　　Single-Supply 3V In-Circuit Serial Programming™ (ICSP™) via two pins

　　In-Circuit Debug (ICD) via Two Pins

　　Extreme Low-Power Management with nanoWatt XLP™:

　　Sleep mode: 100 nA

　　Watchdog Timer: 500 nA

　　Timer1 Oscillator: 500 nA @ 32 kHz

　　Analog Features:

　　Analog-to-Digital Converter (ADC) module :

　　10-bit resolution, 13 External Channels

　　Auto-acquisition capability

　　Conversion available during Sleep

　　1.2V Fixed Voltage Reference (FVR) channel

　　Independent input multiplexing

　　Analog Comparator module:

　　Two rail-to-rail analog comparators

　　Independent input multiplexing

　　Voltage Reference (CVREF) module

　　Programmable (% VDD), 16 steps

　　Two 16-level voltage ranges using VREF pin

　　Peripheral Highlights:

　　Up to 35 I/O pins plus 1 input-only pin:

　　High-Current Sink/Source 25 mA/25 mA

　　Three programmable external interrupts

　　Four programmable interrupt-on-change

　　Eight programmable weak pull-ups

　　Programmable slew rate

　　Capture/Compare/PWM (CCP) module

　　Enhanced CCP (ECCP) module:

　　One, two or four PWM outputs

　　Selectable polarity

　　Programmable dead time

　　Auto-Shutdown and Auto-Restart

　　Master Synchronous Serial Port (MSSP) module

　　3-wire SPI (supports all 4 modes)

　　I2C™ Master and Slave modes with address mask

　　Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) module:

　　Supports RS-485, RS-232 and LIN

　　RS-232 operation using internal oscillator

　　Auto-Wake-up on Break

　　Auto-Baud Detect

　　随着LED发光二极的效能越来越高，寿命越来越长，LED技术的进步，让LED光源进入了汽车照明领域。除了刹车灯，日间行车灯外，汽车大灯也越来越多的使用LED产品，并且对产品结构尺寸、性价比、智能化等提出了更高的要求。大联大品佳为响应市场需要，推出了NXP + Microchip的多通道汽车大灯方案。

　　图示2-大联大品佳推出的基于NXP和Microchip产品的多通道汽车大灯解决方案开发板照片

　　大联大品佳的该多通道汽车大灯方案是为汽车灯光模块量身定做的解决方案，该方案包含3路输出。ASL4500把电池电压升到一个或两个稳定的电压值，作为功率母线负载使用。ASL3415则是有3路独立输出的降压恒流控制芯片，每路均可输出最大1.5A电流以驱动LED。所有参数的设定都是通过Microchip高性能汽车级MCU PIC18F25K8-E/SS使用SPI通讯方式进行控制，同时负责使用PWM调光与汽车通讯功能。