原标题：Renesas RL78／G14系列低功耗高性能MCU解决方案

　　Renesas公司的RL78/G14系列是低功耗高性能通用微控制器(mcu),CPU最低功耗为66 μA/MHz,待机(停止)为240 nA;高计算功能为 51.2 DMIPS (32 MHz).内置的高功能计时器采用三相互补PWM输出,支持三相马达控制.MCU具有片上振荡器,数据闪存,ADC和DAC,比较器等.内置的安全特性支持家用电器安全(IEC/UL 60730).器件具有30引脚到100引脚,高达512KB闪存,使得器件有广泛的应用如马达控制,消费类电子和工业设备.RL78/G14系列真正的低功耗平台(低到66 μA/MHz和RTC+LVD 的0.60 μA ),1.6V-5.5V工作,16-512KB闪存,32MHz时的DMIPS为44,很适合于通用应用.本文介绍了RL78/G14系列主要特性,30引脚到100引脚器件框图,以及RL78/G14系列原型板主要特性和指标,框图,运行图,以及电路图,材料清单和PCB元件布局图.

　　RL78/G14 microcontrollers balance the industry’s lowest level of consumption current (CPU: 66 μA/MHz, standby (STOP): 240 nA) and a high calculation performance of 51.2 DMIPS (32 MHz). The built-in high-function timer supports three-phase motor control using three-phase complementary PWM output. They have an on-chip oscillator, data flash, A/D and D/A converters, comparator, and more. Built-in safety features (function that detects illegal operation of hardware) enable support for the household appliance safety standard (IEC/UL 60730). With a broad 30 to 100-pin lineup and up to 512 KB on-chip flash memory, these microcontrollers can be used in a wide variety of applications such as motor control and consumer and industrial equipment.

　　True Low Power Platform (as low as 66 μA/MHz, and 0.60 μA for RTC + LVD), 1.6 V to 5.5 V operation,16 to 512 Kbyte Flash, 44 DMIPS at 32 MHz, for General Purpose Applications.

　　RL78/G14系列主要特性:

　　Ultra-Low Power Consumption Technology

　　• VDD = single power supply voltage of 1.6 to 5.5 V whichcan operate a 1.8 V device at a low voltage

　　• HALT mode

　　• STOP mode

　　• SNOOZE mode

　　RL78 CPU Core

　　• CISC architecture with 3-stage pipeline

　　• Minimum instruction execution time: Can be changedfrom high speed (0.03125 μs: @ 32 MHz operation withhigh-speed on-chip oscillator) to ultra-low speed (30.5μs: @ 32.768 kHz operation with subsystem clock)

　　• Multiply/divide/multiply & accumulate instructions aresupported.

　　• Address space: 1 MB

　　• General-purpose registers: (8-bit register × 8) × 4 banks

　　• On-chip RAM: 2.5 to 48 KB

　　Code Flash Memory

　　• Code flash memory: 16 to 512 KB

　　• Block size: 1 KB

　　• Prohibition of block erase and rewriting (securityfunction)

　　• On-chip debug function

　　• Self-programming (with boot swap function/flash shieldwindow function)

　　Data Flash Memory

　　• Data flash memory: 4 KB and 8 KB

　　• Back ground operation (BGO): Instructions can beexecuted from the program memory while rewriting thedata flash memory.

　　• Number of rewrites: 1,000,000 times (TYP.)

　　• Voltage of rewrites: VDD = 1.8 to 5.5 V

　　High-speed On-chip Oscillator

　　• Select from 64 MHz, 48 MHz, 32 MHz, 24 MHz, 16 MHz,

　　12 MHz, 8 MHz, 6 MHz, 4 MHz, 3 MHz, 2 MHz, and1 MHz

　　• High accuracy: ±1.0% (VDD = 1.8 to 5.5 V, TA = -20 to+85℃

　　Operating Ambient Temperature

　　• TA = -40 to +85℃ (A: Consumer applications, D:Industrial applications)

　　• TA = -40 to +105℃ (G: Industrial applications)

　　Power Management and Reset Function

　　• On-chip power-on-reset (POR) circuit

　　• On-chip voltage detector (LVD) (Select interrupt andreset from 14 levels)

　　Data Transfer Controller (DTC)

　　• Transfer modes: Normal transfer mode, repeat transfermode, block transfer mode

　　• Activation sources: Activated by interrupt sources.

　　• Chain transfer function

　　Event Link Controller (ELC)

　　• Event signals of 19 to 26 types can be linked to thespecified peripheral function.

　　Serial Interfaces

　　• CSI: 3 to 8 channels

　　• UART/UART (LIN-bus supported): 3 or 4 channels

　　• I2C/simplified I2C: 3 to 8 channels

　　Timer

　　• 16-bit timer: 8 to 12 channels

　　(Timer Array Unit (TAU): 4 to 8 channels, Timer RJ: 1channel, Timer RD: 2 channels, Timer RG: 1 channel)

　　• 12-bit interval timer: 1 channel

　　• Real-time clock: 1 channel (calendar for 99 years, alarmfunction, and clock correction function)

　　• Watchdog timer: 1 channel (operable with the dedicatedlow-speed on-chip oscillator)

　　A/D Converter

　　• 8/10-bit resolution A/D converter (VDD = 1.6 to 5.5 V)

　　• Analog input: 8 to 20 channels

　　• Internal reference voltage (1.45 V) and temperaturesensor

　　D/A Converter

　　• 8-bit resolution D/A converter (VDD = 1.6 to 5.5 V)

　　• Analog output: None or up to two channels

　　• Output voltage: 0 V to VDD

　　• Real-time output function

　　Comparator

　　• None or up to two channels

　　• Operating modes: Comparator high-speed mode,comparator low-speed mode, window mode

　　• The external reference voltage or internal referencevoltage can be selected as the reference voltage.

　　I/O Port

　　• I/O port: 26 to 92 (N-ch open drain I/O [withstandvoltage of 6 V]: 2 to 4, N-ch open drain I/O [VDDwithstand voltage/EVDD withstand voltage]: 10 to 28)

　　• Can be set to N-ch open drain, TTL input buffer, and onchippull-up resistor

　　• Different potential interface: Can connect to a 1.8/2.5/3V device

　　• On-chip key interrupt function

　　• On-chip clock output/buzzer output controller

　　Others

　　• On-chip BCD (binary-coded decimal) correction circuit

　　图1.30引脚RL78/G14系列框图

　　图2.32引脚RL78/G14系列框图

　　图3. 36引脚RL78/G14系列框图

　　图4. 40引脚RL78/G14系列框图

　　图5. 44引脚RL78/G14系列框图

　　图6. 48引脚RL78/G14系列框图

　　图7. 52引脚RL78/G14系列框图

　　图8. 64引脚RL78/G14系列框图

　　图9. 80引脚RL78/G14系列框图

　　图10. 100引脚RL78/G14系列框图

　　RL78/G14系列原型板

　　The RL78/G14 Fast Prototyping Board comes equipped with a high-performance RL78/G14 microcontroller and is an evaluation board specialized for prototype development for a variety of applications. It has a built-in emulator circuit that is equivalent to an E2 emulator Lite so you can write/debug programs without additional tools. In addition, with Arduino Uno and Pmod™ interfaces included standard and through-hole access to all pins of the microcontroller, and so on, it has high scalability.

　　It is also possible to prototype IoT sensor devices using wireless communication based on LoRa® by combining with a Semtech SX1261/SX1262 LoRa® transceiver.

　　RL78/G14系列原型板主要特性:

　　Equipped with an RL78/G14 16-bit microcontroller (80-pin, ROM: 512KB, RAM: 48KB)

　　No additional tools are required for program debugging/writing with the built-in emulator circuit equivalent to an E2 emulator Lite

　　Through-holes with access to all of the pins of the microcontroller

　　Arduino Uno and Pmod™ interfaces come standard

　　Support for various RL78 software and tools

　　RL78/G14系列原型板主要指标:

　　图11. RL78/G14系列原型板框图

　　图. RL78/G14系列原型板布局图(顶层)

　　图. RL78/G14系列原型板运行环境图

　　图15. RL78/G14系列原型板电路图(1)

　　图. RL78/G14系列原型板电路图(2)

　　RL78/G14系列原型板材料清单: