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基于RH850/F1x主控器件的CAN车载网关解决方案

来源： RENESAS/NXP/TI/ATME

2018-03-13

类别：汽车电子

394

拍明

　　概述

　　车载中不同ECU之间可以相互通信，每个模块具有不同的数据格式及通讯速率等，如果没有一个协调的关口，就可能造成通信混乱，若网关具有多路通讯接口，则可以对不同的ECU进行分类整理，信息交互则会更高效，控制将会更精准，系统安全性更高。目前市面上主流的网关都主要是3路，4路通信接口，本方案基于32位MCU(RH850/F1L)实现6路CAN车载网关的应用，满足仪表指示，BCM，动力安全，安全气囊，娱乐信息系统，倒车雷达等不同ECU的CAN通信需求，使得各ECU之间信息融合交互更快捷，系统集成度更高，成本更优，更安全可靠。

　　优势

· 8-16MHZ汽车级无源晶体，标准3225封装，小尺寸2016封装，主流汽车主控RENESAS/NXP/TI/ATMEL等主流厂家官方推荐晶振型号，通过汽车级AEC-Q200认证;工作温度宽(-40-150℃)全球唯一能从材料端-陶瓷底座-导电胶-封装最终产品的晶体厂家，可以为中国客户免费做电容匹配，保证设计应用更可靠。

· TVS(CAN总线保护)满足200-500W不同功率应用，低箝位电压和泄露电流低，符合AEC-Q101汽车电子认证标准，CAN总线保护最佳之选，常用型号有批量备货，可快速供货。

　　· 32位MCU(RH850/F1x)具有以下几个特性：

　　80MHZ的CPU运行速度，执行速度快、效率高，满足网关的数据处理要求;大容量闪存，存储能力强，满足网关对数据存储的要求。内部集成6个功能强大的CAN2.0控制器，每个控制器有80个独立的缓存器，十分有利于实现网关高速、大容量的数据处理;集成的CAN控制器能减少器件数目和PCB布线数量，提高整个网关系统的抗干扰性能。同系列产品具有统一的CPU内核架构和通用的外设功能，软硬件兼容，功能增强设计无需更改PCB，节省成本和周期。

【RH850/F1L】

he in-vehicle high-end microcomputer which was the best for body application and had the lineup which can respond to a variety of Systems

The RH850/F1L is a product line in Renesas' RH850/F1x series of single chip microcontrollers designed for automotive body applications. The embedded flash memory will range from 256 KB to 2 MB and packages will be covered from small package 48 pin to 176 pin.

Key Features:

ITEM		RH850/F1L
Pin Count		48-pin	64-pin	80-pin	100-pin	144-pin	176-pin
External Memory I/F		Not provided					Provided
Clock		Main Oscillator : 8 to 24 MHz, PLL 80 MHz max.
Clock		On-chip high-speed oscillator: 8 MHz, On-chip low-speed oscillator: 240 kHz
32.768kHz sub oscillator & real time clock		Not provided				Provided
16-bit / 32-bit Timers		16 / 4	16 / 4	16 / 4	32 / 8	32 / 8	48 / 8
PWM incl. delay with diagnostics		13 channels	24 channels		48 channels	64 channels	72 channels
A/D converter	12-bit	8 channels	10 channels	11 channels	16 channels	16 + 8 channels	16 + 16 channels
A/D converter	10-bit	4 channels	11 channels	14 channels	20 channels	20 + 4 channels	20 + 8 channels
Serial Interfaces	CSI	2 channels	2 channels	4 channels	5 channels	6 channels	6 channels
	I²C	1 channel
	LIN/UART	1 channel	2 channels	3 channels	4 channels	6 channels	6 channels
	LIN Master	2 channels	2 channels		3 channels	6 channels	10 channels
	CAN	1 channel	3 channels			4 channels (code flash up to 1MB) 6 channels (code flash over 1 MB)	6 channels
Functional Safety		Clock Monitor, Window Watchdog Timers, Data CRC, Memory Protection Unit,System Register Protection, Power-on-clear, On-chip Core Voltage Monitor, ECC, Register write protection
Power supply voltage		2.7 to 5.5 V for I/O / 3.0 to 5.5 V for A/D converter
Operating ambient temperature		Ta= -40 to 125℃