Renesas RA2A1系列超低功耗32位ARM MCU开发方案
原标题:Renesas RA2A1系列超低功耗32位ARM MCU开发方案
Renesas公司的RA2A1系列是采用高性能 Arm® Cortex®-M23 内核的超低功耗32位ARM mcu,工作频率48MHz,提供高度集成的高精度模拟性能. RA2A1 系列产品支持 1.6 V 至 5.5 V工作电压范围.RA2A1系列集成了16 位 SAR ADC,24 位 Sigma Delta ADC,比较器,运算放大器和12位和8位DAC,高达256KB代码闪存,32KB SRAM和容性触摸检测单元以及安全特性.此外还集成了全速USB 2.0,CAN 2.0和SCI(UART,简单 SPI,简单 I2C).RA2A1系列MCU 面向成本敏感和低功耗工业传感器应用,高解析度模拟将成为成本优势.主要用在工业自动化(光电传感器,光纤传感器,温度传感器),过程自动化(压力传感器,流量控制计,单相表),楼宇自动化/家用电器(烟雾探测器),以及保健(脉搏血氧仪,身体指数测量)和一般用途.本文介绍了RA2A1系列主要特性,框图和评估板EK-RA2A1 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 setof Renesas peripherals to facilitate design scalability and efficient platform-based product development.
The MCU in this series incorporates an energy-efficient Arm Cortex®-M23 32-bit core that is particularly well suited forcost-sensitive and low-power applications, with the following features:
Up to 256-KB code flash memory
32-KB SRAM
16-bit A/D Converter (ADC16)
24-bit Sigma-Delta A/D Converter (SDADC24)
12-bit D/A Converter (DAC12)
8-bit D/A Converter (DAC8)
Operational Amplifier (OPAMP) with configurable switches
Security features.
RA2A1系列主要特性:
■ Arm Cortex-M23 Core
Armv8-M architecture
Maximum operating frequency: 48 MHz
Arm Memory Protection Unit (Arm MPU) with 8 regions
Debug and Trace: DWT, FPB, and CoreSight™ MTB-M23
CoreSight Debug Port: SW-DP
■ Memory
Up to 256-KB code flash memory
8-KB data flash memory (100,000 program/erase (P/E) cycles)
Up to 32-KB SRAM
Flash Cache (FCACHE)
Memory Protection Unit (MPU)
Memory Mirror Function (MMF)
128-bit unique ID
■ Connectivity
USB 2.0 Full-Speed (USBFS) module
- On-chip transceiver with voltage regulator
- Compliant with USB Battery Charging Specification 1.2
Serial Communications Interface (SCI) × 3
- UART
- Simple IIC
- Simple SPI
Serial Peripheral Interface (SPI) × 2
I2C bus interface (IIC) × 2
Controller Area Network (CAN) module
■ Analog
16-bit A/D Converter (ADC16)
- 1.2 Msps
- Differential input mode
- Single-ended input mode
24-bit Sigma-Delta A/D Converter (SDADC24)
- 15.6 ksps
- Differential input mode
- Single-ended input mode
12-bit D/A Converter (DAC12)
8-bit D/A Converter (DAC8) × 2
High-Speed Analog Comparator (ACMPHS)
Low-Power Analog Comparator (ACMPLP) × 2
Operational Amplifier (OPAMP) × 3
Temperature Sensor (TSN)
■ Timers
General PWM Timer 32-bit (GPT32)
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)
Event Link Controller (ELC)
Data Transfer Controller (DTC)
Key Interrupt Function (KINT)
Power-on reset
Low Voltage Detection (LVD) with voltage settings
■ Security and Encryption
AES128/256
True Random Number Generator (TRNG)
■ Human Machine Interface (HMI)
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 5.5 V)
(1 to 4 MHz when VCC = 1.6 to 5.5 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 49 input/output pins
- Up to 3 CMOS input
- Up to 46 CMOS input/output
- Up to 9 input/output 5 V tolerant
- Up to 3 high current (20 mA)
■ Operating Voltage
VCC: 1.6 to 5.5 V
■ Operating Temperature and Packages
Ta = -40℃ to +85℃
- 36-pin BGA (5 mm × 5 mm, 0.8 mm pitch)
Ta = -40°C to +105℃
- 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch)
- 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch)
- 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch)
- 40-pin QFN (6 mm × 6 mm, 0.5 mm pitch)
目标应用:
■Industrial Automation (Photoelectric Sensor, Fiber Sensor,
Temperature Sensor)
■Process Automation (Pressure Sensor, Flow control meter,
Single Phase Meter)
■Building Automation/Home Appliance (Smoke Detector)
■Healthcare (Pulse Oximeters, Body Composition Measurement)
■General Purpose
图1.RA2A1 框图
评估板EK-RA2A1 v1
评估板EK-RA2A1 v1主要特性
The EK-RA2A1 v1 enables developers to get started with initial firmware development.
• Renesas RA2A1 Microcontroller Group
R7FA2A1AB3CFM
64-pin LQFP package
48 MHz Arm® Cortex®-M23 core (Armv8-M architecture) with Arm MPU
32 KB SRAM
256 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 RA2A1 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 5V input through the Debug USB connector supplies the on-board power regulator, which provides 3.3V to power the board logic and interfaces. External 5V or 3.3V may be also supplied through alternate locations on the Evaluation Kit 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-RA2A1 v1外形图:正面
图3.评估板EK-RA2A1 v1外形图:背面
The following components are included in the kit:
1. One EK-RA2A1 board
2. One USB Type-A to USB Micro-B cable
图4.评估板EK-RA2A1 v1框图
评估板EK-RA2A1 v1材料清单:
责任编辑:David
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