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Low power consumption, high function general-purpose microcontrollers suitable for motor control as well as industrial and metering applications


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 44 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.



Key Features:

Pin Count 30/32/36 pins 44 pins 44 pins 48 pins 52/64 pins 80/100 pins
Program Flash (KB) 16 to 128 16 to 192 16 to 256 16 to 512 32 to 512
(52-pin: Up to 256 KB)
96 to 512
Data Flash (KB) ROM 96 KB or more 8
ROM 64 KB or less 4 (No applicable products)
SRAM (KB) 2.5 to 16 2.5 to 20 2.5 to 24 2.5 to 48 4 to 48
(52-pin: Up to 24 KB)
12 to 48
Main System Clock High-speed system clock(fMX)

X1 (crystal/ceramic) oscillation, external main system clock input (EXCLK):

1 to 20 MHz (VDD = 2.7 to 5.5 V),

1 to 16 MHz (VDD=2.4 to 5.5 V),

1 to 8 MHz (VDD = 1.8 to 5.5 V),

1 to 4 MHz (VDD = 1.6 to 5.5 V)

High-speed on-chip oscillator clock (fIH)

1 to 32 MHz(VDD=2.7 to 5.5 V),

1 to 16 MHz (VDD=2.4 to 5.5 V) ,

1 to 8 MHz(VDD=1.8 to 5.5 V),

1 to 4 MHz (VDD=1.6 to 5.5 V)

* Only Timer RD can be operated at 48, 64 MHz(fHOCO)

Subsystem Clock - XT1 (crystal) oscillation, external subsystem clock input (EXCLKS) 32.768 kHz
Low-speed on-chip oscillator clock 15 kHz
I/O port Total 26/28/32 36 40 44 48/58 74/92
CMOS I/O 21/22/26 28 31 34 38/48 64/82
CMOS input 3/3/3 5 5 5 5 5
CMOS output - - - 1 1 1
N-ch open drain I/O (6 V tolerance) 2/3/3 3 4 4 4 4
Timer 16-bit TAU 4 channels, PWM output x 3 8 channels, PWM output x 6
Timer RJ 1 channel
Timer RD 2 channels, PWM output x 6
Timer RG 1 channel, PWM output 1
Real-time clock (RTC) 1 channel
RTC output (1 Hz) - 1 channel ( fSUB = 32.768 kHz)
12-bit interval timer 1 channel
Watchdog timer 1 channel
Clock output/buzzer output 2 channels
Serial Interface CSI:1ch/UART:1ch/simplified I2C:1ch 2/2/1 1 1 1 1/- -
CSI:2ch/UART:1 ch/simplified I2C:2 ch -/-/1 1 1 1 1/2 3
CSI:1 ch/UART(supporting LIN-bus):1 ch /simplified I2C:1 ch 1 1 1 - - -
CSI:2 ch/UART(supporting LIN-bus):1 ch /simplified I2C:2 ch - - - 1 1 1
I2C 1 channel 2 channels
8/10-bit resolution A/D converter 8 channels 9channels 10 channels 12 channels 17/20 channels
8-bit D/A converter (ROM 96 KB or more) 1/2/2 channels 2 channels
Comparators (ROM 96 KB or more) 2 channels (Supported window function)
Data transfer control (DTC) ROM 96 KB or more 30 sources 31 sources 32 sources 32/33 sources 39 sources
ROM 64 KB or less 28 sources 29 sources 30 sources 30/31 sources (No applicable products)
Event link controller (ELC)) Event input ROM 96 KB or more 21 22 26
ROM 64 KB or less 19 20 (No applicable products)
Event trigger output ROM 96 KB or more 8/9/9 9 9
ROM 64 KB or less 7 7 (No applicable products)
External interrupt pins 6 10 13 15/19 20
Multiplier/divider/multiply-accumulator Multiple instruction, divide instruction and multiply-accumulator instruction are supported
Safety Function WDT, TRAP instruction, flash memory CRC operations, RAM parity error detection, invalid memory access detection, frequency detection, RAM guarding, SFR guarding, A/D converter testing, I/O port output signal level detection function
On-chip debug Provided (Supported trace function with ROM 96 KB or more products)
Power-on-reset circuit Power-on-reset: 1.51 V, Power-down-reset: 1.50 V
Voltage detector 1.63 to 4.06 V (14 stages)
Power supply voltage VDD = 1.6 to 5.5 V (TA = -40 to +85 ℃)
VDD = 2.4 to 5.5 V (TA = -40 to +105 ℃)
Operating ambient temperature TA = - 40 to + 85 ℃ (A-version for consumer applications and D-version for industrial applications)
TA = - 40 to + 105 ℃(G-version for industrial applications)


Pin Count / Memory Size Lineup:

RL78/G14-Pin Count/Memory Size


Block Diagram:

RL78/G14 Block Diagram

Below you will find information to support the development of your application.
You can find an explanation of orderable part numbers here.


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Software Design Support

Title Description
Web Simulator RL78/G14 Web Simulator supporting initial evaluation for development now available
CS+ An integrated development environment that can be used for coding, assembling/compiling, and simulation. (Also included with Renesas Starter Kits.)
e2 studio Renesas eclipse embedded studio, known as e² studio, is a complete development and debug environment based on the popular Eclipse CDT project.
E1 A standard Renesas on-chip debugging emulator that enables users to carry out ample debugging for real development at low cost. (Also included with starter kits.)
Renesas Starter Kit All the development tools you need for MCU evaluation and getting started. Also recommended for training.


Hardware Design Support

Title Description
Characteristics data Information on observed values. Please use this as reference data when developing your set.
Oscillation circuit characteristics The resonators for which the operation is verified and their oscillator constants are shown below.
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