原标题：Renesas RA6M1 120MHz 32位ARM MCU开发方案

　　Renesas公司的RA6M1微控制器是瑞萨电子 RA6 产品系列的切入点,采用高效的 40nm 工艺,由开放且灵活的生态系统概念提供支持,即基于 FreeRTOS 的灵活配置软件包 (FSP),能够扩展以使用其他 RTOSes 和中间件. RA6M1具有120MHz 32位Arm® Cortex®-M4 内核,集成了512kB 闪存以及 256kB SRAM,以及与 EEPROM 存储数据功能类似的 8kB 数据闪存.具有电容式触摸传感单元,全速 USB 2.0,CAN 2.0B,SCI(UART,简单 SPI,简单 I2C),SPI/ I2C 多主机接口,SDHI和SSI/串行声音接口.适用于需要安全性,大型嵌入式 RAM 和低功耗的物联网应用如安全性(火灾探测,防盗检测,面板控制),计量(电力,自动抄表),工业(机器人,开门器,缝纫机,自动售货机,UPS)以及HVAC(供暖,空调,锅炉控制)和一般用途等.本文介绍了RA6M1主要特性,框图,以及评估板EK-RA6M1 v1主要特性,框图,电路图,材料清单和PCB设计图.

　　The MCU integrates multiple series of software- and pin-compatible Arm®-based 32-bit cores that share a common set of Renesas peripherals to facilitate design scalability and efficient platform-based product development.

　　The MCU in this series incorporates a high-performance Arm Cortex®-M4 core running up to 120 MHz with the following features:

　　 512-KB code flash memory

　　 256-KB SRAM

　　 Capacitive Touch Sensing Unit (CTSU)

　　 USBFS

　　 SD/MMC Host Interface

　　 Quad Serial Peripheral Interface (QSPI)

　　 Security and safety features

　　 12-bit A/D Converter (ADC12)

　　 12-bit D/A Converter (DAC12)

　　 Analog peripherals.

　　RA6M1主要特性:

　　■ Arm Cortex-M4 Core with Floating Point Unit (FPU)

　　 Armv7E-M architecture with DSP instruction set

　　 Maximum operating frequency: 120 MHz

　　 Support for 4-GB address space

　　 On-chip debugging system: JTAG, SWD, and ETM

　　 Boundary scan and Arm Memory Protection Unit (Arm MPU)

　　■ Memory

　　 512-KB code flash memory (40 MHz zero wait states)

　　 8-KB data flash memory (125,000 erase/write cycles)

　　 256-KB SRAM

　　 Flash Cache (FCACHE)

　　 Memory Protection Units (MPU)

　　 Memory Mirror Function (MMF)

　　 128-bit unique ID

　　■ Connectivity

　　 USB 2.0 Full-Speed (USBFS) module

　　- On-chip transceiver

　　 Serial Communications Interface (SCI) with FIFO × 7

　　 Serial Peripheral Interface (SPI) × 2

　　 I2C bus interface (IIC) × 2

　　 CAN module (CAN) × 2

　　 Serial Sound Interface Enhanced (SSIE)

　　 SD/MMC Host Interface (SDHI) × 2

　　 Quad Serial Peripheral Interface (QSPI)

　　 IrDA interface

　　 Sampling Rate Converter (SRC)

　　 External address space

　　- 8-bit bus space

　　■ Analog

　　 12-bit A/D Converter (ADC12) with 3 sample-and-hold circuits each × 2

　　 12-bit D/A Converter (DAC12) × 2

　　 High-Speed Analog Comparator (ACMPHS) × 6

　　 Programmable Gain Amplifier (PGA) × 6

　　 Temperature Sensor (TSN)

　　■ Timers

　　 General PWM Timer 32-bit Enhanced High Resolution (GPT32EH) × 4

　　 General PWM Timer 32-bit Enhanced (GPT32E) × 4

　　 General PWM Timer 32-bit (GPT32) × 5

　　 Asynchronous General-Purpose Timer (AGT) × 2

　　 Watchdog Timer (WDT)

　　■ Safety

　　 Error Code Correction (ECC) in SRAM

　　 SRAM parity error check

　　 Flash area protection

　　 ADC self-diagnosis function

　　 Clock Frequency Accuracy Measurement Circuit (CAC)

　　 Cyclic Redundancy Check (CRC) calculator

　　 Data Operation Circuit (DOC)

　　 Port Output Enable for GPT (POEG)

　　 Independent Watchdog Timer (IWDT)

　　 GPIO readback level detection

　　 Register write protection

　　 Main oscillator stop detection

　　 Illegal memory access

　　■ System and Power Management

　　 Low power modes

　　 Realtime Clock (RTC) with calendar and VBATT support

　　 Event Link Controller (ELC)

　　 DMA Controller (DMAC) × 8

　　 Data Transfer Controller (DTC)

　　 Key Interrupt Function (KINT)

　　 Power-on reset

　　 Low Voltage Detection (LVD) with voltage settings

　　■ Security and Encryption

　　 AES128/192/256

　　 3DES/ARC4

　　 SHA1/SHA224/SHA256/MD5

　　 GHASH

　　 RSA/DSA/ECC

　　 True Random Number Generator (TRNG)

　　■ Human Machine Interface (HMI)

　　 Capacitive Touch Sensing Unit (CTSU)

　　■ Multiple Clock Sources

　　 Main clock oscillator (MOSC) (8 to 24 MHz)

　　 Sub-clock oscillator (SOSC) (32.768 kHz)

　　 High-speed on-chip oscillator (HOCO) (16/18/20 MHz)

　　 Middle-speed on-chip oscillator (MOCO) (8 MHz)

　　 Low-speed on-chip oscillator (LOCO) (32.768 kHz)

　　 IWDT-dedicated on-chip oscillator (15 kHz)

　　 Clock trim function for HOCO/MOCO/LOCO

　　 Clock out support

　　■ General-Purpose I/O Ports

　　 Up to 76 input/output pins

　　- Up to 9 CMOS input

　　- Up to 67 CMOS input/output

　　- Up to 14 input/output 5 V tolerant

　　- Up to 13 high current (20 mA)

　　■ Operating Voltage

　　 VCC: 2.7 to 3.6 V

　　■ Operating Temperature and Packages

　　 Ta = -40°C to +85°C

　　- 100-pin LGA (7 mm × 7 mm, 0.65 mm pitch)

　　 Ta = -40°C to +105°C

　　- 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch)

　　- 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch)

　　- 64-pin QFN (8 mm × 8 mm, 0.4 mm pitch)

　　图1. RA6M1框图

　　评估板EK-RA6M1 v1

　　Evaluation Kit for RA6M1 Microcontroller Group EK-RA6M1 v1

　　The EK-RA6M1 v1 enables developers to get started with initial firmware development.

　　• Renesas RA6M1 Microcontroller Group

　　 R7FA6M1AD3CFP

　　 100-pin LQFP package

　　 120 MHz Arm® Cortex®-M4 core with Floating Point Unit (FPU)

　　 256 KB SRAM

　　 512 KB code flash memory

　　 8 KB data flash memory

　　• Connectivity

　　 A Device USB connector for the Main MCU

　　 S124 MCU-based SEGGER J-Link® On-Board interface for debugging and programming of the RA6M1 MCU. A 10-pin JTAG/SWD interface is also provided for connecting optional external debuggers and programmers.

　　 Two PMOD connectors, allowing use of appropriate PMOD compliant peripheral plug-in modules for rapid prototyping

　　 Pin headers for access to power and signals for the Main MCU

　　• Multiple clock sources

　　 Main MCU oscillator crystals, providing precision 12.000 MHz and 32,768 Hz external reference clocks  Additional low-precision clocks are available internal to the Main MCU

　　• MCU reset push-button switch

　　• MCU boot configuration jumper

　　• General purpose I/O ports

　　 One jumper to allow measuring of Main MCU current

　　 Copper jumpers on PCB bottom side for configuration and access to selected MCU signals

　　• Operating voltage

　　 External 5 V input through the Debug USB connector supplies the on-board power regulator to power logic and interfaces on the board. External 5 V or 3.3 V may be also supplied through alternate locations on the board.

　　• A two-color board status LED indicating availability of regulated power and connection status of the J-Link interface

　　• A red User LED, controlled by the Main MCU firmware

　　• A User Push-Button switch, User Capacitive Touch Button sensor, and an optional User Potentiometer, all of which are controlled by the Main MCU firmware

　　图2. 评估板EK-RA6M1 v1外形图:顶视图

　　图3. 评估板EK-RA6M1 v1外形图:底视图

　　图4. 评估板EK-RA6M1 v1框图

　　图5.电源选择图

　　评估板EK-RA6M1 v1材料清单: