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Renesas RA4M1 ARM MCU容性触摸和LCD控制方案

来源： eccn

2020-05-27

类别：工业控制

123

拍明

原标题：Renesas RA4M1 ARM MCU容性触摸和LCD控制方案

　　Renesas公司的RA4M1是采用高性能Arm® Cortex®-M4核的微控制器(mcu)系列产品,提供分段LCD控制器和容性触摸检测单元.MCU集成了多个软件和引脚兼容的Arm®32位核,提供低功耗,高性能Arm Cortex®-M4核,工作频率48MHz,集成了256KB闪存,32KB SRAM,分段LCD控制器(SLCDC),容性触摸检测单元(CTSU),USB 2.0全速模块(USBFS),14位ADC(ADC14)和12位DAC(DAC12),8位DAC(DAC8)x2,低功耗模拟比较器(ACMPLP)x2,运算放大器(OPAMP)x4以及温度传感器(TSN).具有加密AES128/256和GHASH以及真随机号码发生器(TRNG).工作温度-40℃ 到 +85℃和-40℃到 +105℃.中电网为您整理如下详细资料,主要用在密集的人机界面设计如容性触摸通路和分段LCD控制器.本文介绍了RA4M1主要特性,框图,以及评估板EK-RA4M1 v1主要特性,框图,电路图,材料清单和PCB设计图.

　　The Renesas RA4M1 group of micrcontrollers (MCUs) uses the high-performance Arm® Cortex®-M4 core and offers a segment LCD controller and a capacitive touch sensing unit input for intensive HMI designs. The RA4M1 MCU is built on a highly efficient low power process and is supported by an open and flexible ecosystem concept—the Flexible Software Package (FSP), built on FreeRTOS—and is expandable to use other RTOSes and middleware. The RA4M1 is suitable for applications where a large amount of capacitive touch channels and a segment LCD controller are required.

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

　　The MCU provides an optimal combination of low-power, high-performance Arm Cortex®-M4 core running up to48 MHz with the following features:

　　 256-KB code flash memory

　　 32-KB SRAM

　　 Segment LCD Controller (SLCDC)

　　 Capacitive Touch Sensing Unit (CTSU)

　　 USB 2.0 Full-Speed Module (USBFS)

　　 14-bit A/D Converter (ADC14)

　　 12-bit D/A Converter (DAC12)

　　 Security features.

　　RA4M1主要特性:

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

　　 Armv7E-M architecture with DSP instruction set

　　 Maximum operating frequency: 48 MHz

　　 Support for 4-GB address space

　　 Arm Memory Protection Unit (Arm MPU) with 8 regions

　　 Debug and Trace: ITM, DWT, FPB, TPIU, ETB

　　 CoreSight™ Debug Port: JTAG-DP and SW-DP

　　■ Memory

　　 256-KB code flash memory

　　 8-KB data flash memory (100,000 program/erase (P/E) cycles)

　　 32-KB SRAM

　　 Flash Cache (FCACHE)

　　 Memory Protection Unit (MPU)

　　 128-bit unique ID

　　■ Connectivity

　　 USB 2.0 Full-Speed Module (USBFS)

　　- On-chip transceiver with voltage regulator

　　- Compliant with USB Battery Charging Specification 1.2

　　 Serial Communications Interface (SCI) × 4

　　- UART

　　- Simple IIC

　　- Simple SPI

　　 Serial Peripheral Interface (SPI) × 2

　　 I2C bus interface (IIC) × 2

　　 Controller Area Network (CAN) module

　　 Serial Sound Interface Enhanced (SSIE)

　　■ Analog

　　 14-bit A/D Converter (ADC14)

　　 12-bit D/A Converter (DAC12)

　　 8-bit D/A Converter (DAC8) ×2 (for ACMPLP)

　　 Low-Power Analog Comparator (ACMPLP) × 2

　　 Operational Amplifier (OPAMP) × 4

　　 Temperature Sensor (TSN)

　　■ Timers

　　 General PWM Timer 32-Bit (GPT32) × 2

　　 General PWM Timer 16-Bit (GPT16) × 6

　　 Asynchronous General-Purpose Timer (AGT) × 2

　　 Watchdog Timer (WDT)

　　■ Safety

　　 Error Correction Code (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 Battery Backup support

　　 Event Link Controller (ELC)

　　 DMA Controller (DMAC) × 4

　　 Data Transfer Controller (DTC)

　　 Key Interrupt Function (KINT)

　　 Power-on reset

　　 Low Voltage Detection (LVD) with voltage settings

　　■ Security and Encryption

　　 AES128/256

　　 GHASH

　　 True Random Number Generator (TRNG)

　　■ Human Machine Interface (HMI)

　　 Segment LCD Controller (SLCDC)

　　- Up to 38 segments × 4 commons

　　- Up to 34 segments × 8 commons

　　 Capacitive Touch Sensing Unit (CTSU)

　　■ Multiple Clock Sources

　　 Main clock oscillator (MOSC)

　　(1 to 20 MHz when VCC = 2.4 to 5.5 V)

　　(1 to 8 MHz when VCC = 1.8 to 2.4 V)

　　(1 to 4 MHz when VCC = 1.6 to 1.8 V)

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

　　 High-speed on-chip oscillator (HOCO)

　　(24, 32, 48, 64 MHz when VCC = 2.4 to 5.5 V)

　　(24, 32, 48 MHz when VCC = 1.8 to 5.5 V)

　　(24, 32 MHz when VCC = 1.6 to 5.5 V)

　　 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 84 input/output pins

　　- Up to 3 CMOS input

　　- Up to 81 CMOS input/output

　　- Up to 9 input/output 5-V tolerant

　　- Up to 2 high current (20 mA)

　　■ Operating Voltage

　　 VCC: 1.6 to 5.5 V

　　■ Operating Temperature and Packages

　　 Ta = -40℃ to +85℃

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

　　 Ta = -40℃ to +105℃

　　- 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)

　　- 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch)

　　- 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch)

　　- 40-pin QFN (6 mm × 6 mm, 0.5 mm pitch)

　　图1.RA4M1框图

　　评估板EK-RA4M1 v1

　　Evaluation Kit for RA4M1 Microcontroller Group EK-RA4M1 v1

　　The EK-RA4M1 v1 enables developers to get started with initial firmware development.

　　• Renesas RA4M1 Microcontroller Group

　　 R7FA4M1AB3CFP

　　 100-pin LQFP package

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

　　 32 KB SRAM

　　 256 KB code flash memory

　　 8 KB data flash memory

　　• Connectivity

　　 A Device USB connector for the Main MCU

　　 SEGGER J-Link® On-Board (OB) interface for debugging and programming of the RA4M1 MCU. A 10pin 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 the Evaluation Kit logic and interfaces. External 5 V or 3.3 V may also be supplied through alternate locations on the Evaluation Kit.

　　• 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 Sensor (button), and an optional User Potentiometer, all of which are controlled by the Main MCU firmware.