原标题：Renesas RL78-G1C 16位超低功耗MCU入门开发方案

　　Renesas公司的RL78/G1C是16位超低功耗mcu,工作电压2.4V-5.5V, RL78 24 MHz (31 DMIPS)内核,工作时功耗71 μA/MHz.器件还集成了精度±1%振荡器,USB 2.0全速接口以及其多种通信接口,主要用在工业和办公设备,马达控制,消费类电子,家用电器和医疗电子等.本文介绍了RL78/G1C主要特性,32引脚和48引脚框图, RL78/G1C入门评估板主要特性,框图,电路图和PCB元件布局图.

　　The new RL78 family inherits the strengths of the R8C and 78K microcontroller families. It enables customers to build compact and energy-efficient systems at lower cost.It also provides peace of mind, because users of R8C and 78K microcontrollers can make use of their existing software resources.

　　The RL78 family combines the reliability and proven track record of the R8C family with the low power consumption of the 78K family.

　　The RL78 family supports the full range of requirements of low-end microcontroller customers.

　　Product Overview:

　　RL78 24 MHz (31 DMIPS) core

　　(±1%) on-chip oscillator (accurate over operating temperature)

　　USB 2.0 Full speed interface, compliant with battery charging specification 1.2

　　2.4V to 5.5V operation

　　Small package options: 32-pin WQFN (5 x 5 mm), 48-pin WQFN (7 x 7 mm)

　　Applications: Industrial and office equipment, home appliances, healthcare and consumer electronics

　　RL78/G1C主要特性:

　　Ultra-Low Power Technology

　　• 2.4 V to 5.5 V operation from a single supply

　　• Stop (RAM retained): 0.23 μA, (LVD enabled): 0.31 μA

　　• Halt (RTC + LVD): 0.57 μA

　　• Supports snooze

　　• Operating: 71 μA/MHz

　　16-bit RL78 CPU Core

　　• Delivers 31 DMIPS at maximum operating frequency of 24 MHz

　　• Instruction Execution: 86% of instructions can be executed in 1 to 2 clock cycles

　　• CISC Architecture (Harvard) with 3-stage pipeline

　　• Multiply Signed & Unsigned: 16 x 16 to 32-bit result in 1 clock cycle

　　• MAC: 16 x 16 to 32-bit result in 2 clock cycles

　　• 16-bit barrel shifter for shift & rotate in 1 clock cycle

　　• 1-wire on-chip debug function

　　Code Flash Memory

　　• Density: 32 KB

　　• Block size: 1 KB

　　• On-chip single voltage flash memory with protection from block erase/writing

　　• Self-programming with secure boot swap function and flash shield window function

　　Data Flash Memory

　　• Data Flash with background operation

　　• Data flash size: 2 KB

　　• Erase Cycles: 1 Million (typ.)

　　• Erase/programming voltage: 2.4 V to 5.5 V

　　RAM

　　• 5.5 KB size options

　　• Supports operands or instructions

　　• Back-up retention in all modes

　　High-speed On-chip Oscillator

　　• 24 MHz with +/− 1% accuracy over voltage (2.4 V to

　　5.5 V) and temperature (−20℃ to +85℃)

　　• Pre-configured settings: 48 MHz, 24 MHz (TYP.)

　　Reset and Supply Management

　　• Power-on reset (POR) monitor/generator

　　• Low voltage detection (LVD) with 9 setting options

　　(Interrupt and/or reset function)

　　USB

　　• Complying with USB version 2.0, incorporating host/function controller

　　• Corresponding to full-speed transfer (12 Mbps) and low-speed (1.5 Mbps)

　　• Complying with Battery Charging Specification Revision 1.2

　　• Compliant with the 2.1A/1.0A charging mode prescribed in the Apple Inc. MFi specification in the USB power supply component specification

　　Direct Memory Access (DMA) Controller

　　• Up to 2 fully programmable channels

　　• Transfer unit: 8- or 16-bit

　　Multiple Communication Interfaces

　　• Up to 2 x I2C master

　　• Up to 1 x I2C multi-master

　　• Up to 2 x CSI (7-, 8-bit)

　　• Up to 1 x UART (7-, 8-, 9-bit)

　　Extended-Function Timers

　　• Multi-function 16-bit timer TAU: Up to 4 channels (remote control output available)

　　• Real-time clock (RTC): 1 channel (full calendar and alarm function with watch correction function)

　　• 12-bit interval timer: 1 channel

　　• 15 kHz watchdog timer: 1 channel (window function)

　　Rich Analog

　　• ADC: Up to 9 channels, 8/10-bit resolution, 2.1 μs minimum conversion time

　　• Internal voltage reference (1.45 V)

　　• On-chip temperature sensor

　　Safety Features (IEC or UL 60730 compliance)

　　• Flash memory CRC calculation

　　• RAM parity error check

　　• RAM write protection

　　• SFR write protection

　　• Illegal memory access detection

　　• Clock stop/frequency detection

　　• ADC self-test

　　• I/O port read back function (echo)

　　General Purpose I/O

　　• 5 V tolerant, high-current (up to 20 mA per pin)

　　• Open-Drain, Internal Pull-up support

　　Operating Ambient Temperature

　　• Standard: −40℃ to + 85℃

　　• Extended: −40℃ to + 105℃

　　Package Type and Pin Count

　　• 32-pin plastic HWQFN (5 x 5)

　　• 32-pin plastic LQFP (7 x 7)

　　• 48-pin plastic LFQFP (7 x 7)

　　• 48-pin plastic HWQFN (7 x 7)

　　图1. RL78/G1C 32引脚框图

　　图2. RL78/G1C 48引脚框图

　　RL78 offers system designers key advantages for next-generation designs, reducing system power, enhancing integration and providing a cost-effective platform approach.

　　RL78/G1C 应用领域:

　　RL78/G1C入门评估板

　　The Renesas Starter Kit for RL78/G1C is intended as a user-friendly introductory and evaluation tool for the RL78/G1C microcontroller. The board also provides a useful platform for evaluating the Renesas suite of development tools for coding and debugging, using CubeSuite+ as well as programming the device using E1 emulator and/or Renesas Flash Programmer.

　　The Renesas Starter Kit for RL78/G1C may be connected to the host PC using the included USB E1 on chip debugging interface.

　　The purpose of the board is to enable the user to evaluate the capabilities of the device and its peripherals by giving the user a simple platform on which code can be run only minutes from opening box. It can also prove an invaluable tool in development by providing a useful test platform for code already debugged using one of our more powerful emulation tools.

　　This RSK is an evaluation tool for Renesas microcontrollers. This manual describes the technical details of the RSK hardware. The Quick Start Guide and Tutorial Manual provide details of the software installation and debugging environment.

　　RL78/G1C入门评估板主要特性:

　　• Renesas microcontroller programming

　　• User code debugging

　　• User circuitry such as switches, LEDs and a potentiometer

　　• Sample application

　　• Sample peripheral device initialisation code

　　The RSK board contains all the circuitry required for microcontroller operation

　　图3. RL78/G1C入门评估板框图

　　图4.RL78/G1C入门评估板外形图