1. Home
    2. Microcontrollers and Microprocessors
    3. RL78 Family


The standard for general-purpose microcontroller with low power, high function, and abundant lineup


RL78/G13 microcontrollers balance the industry's lowest level of consumption current (CPU: 66 μA/MHz, standby (STOP): 230 nA) and a high performance of 41 DMIPS (32 MHz). They have an on-chip oscillator, data flash, A/D converter, 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 20 to 128-pin lineup and up to 512 KB on-chip flash memory, these microcontrollers can be used in a wide variety of applications from home and consumer appliances to industrial equipment.


Key Features:

Pin Count 20/24/25
CPU Core RL78 Core
Prpgram Flash (KB) 16 to 64 16 to 128 16 to 192 16 to 512

32 to 512


96 to 512 192 to 512
Data Flash (KB) ※2 4
R5F1006x R5F1007x R5F1008x
4 to 8
R5F100Ax R5F100Bx R5F100Cx
4 to 8 R5F100Ex 4 to 8 R5F100Fx R5F100Gx 4 to 8
R5F100J R5F100Lx
SRAM (KB) 2 to 4 2 to 12 2 to 16 2 to 32 2 to 32 8 to 32 16 to 32
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)

Subsystem Clock - XT1 (crystal) oscillation, external subsystem clock input (EXCLKS) 32.768 kHz
Low-speed on-chip oscillator clock 15 kHz (VDD = 1.6 - 5.5 V)
I/O port TOTAL 16/20/21 26/28/32 36 40/44 48/58 74/92 120
N-ch open drain I/O (6 V tolerance) -/2/2 2/3/3 3 4/4 4
N-ch open drain I/O (VDD tolerance) 5/5/6 9/9/10 10 10/11 13/15 21/24 25
Timer   16 bit (TAU)   8 ch, PWM output/20 pins: 2, 24 pins: 3, 25 pins: 3)) 8 ch, PWM output x 3 8 ch, PWM output x 3 8 ch, PWM output x 4 8 ch, PWM output/52 pins: 4, 64 pins: 7 12 ch, PWM output x 10 16 ch, PWM output x 14
12-bit interval timer 1
Watchdog timer 1
Serial Interface CSI:1 ch/UART:1 ch/simplifiedI²C:
1 ch
2 2/1 1/- -
CSI:2 ch/UART:1 ch/simplifiedI²C:
2 ch
- -/1 1/2 3
(LIN-bus corres-pondence):
1 ch/simplifiedI2C:
1 ch
- 1/1/- -
CSI:1 ch/UART(bus corres-pondence):1 ch/simplifiedI2C:2 ch - -/-/1 1
I²C bus -/1/1 2
8/10-bit resolution A/D converter 6 8 9 10 12 17/20 26
Clock/Buzzer output -/-/1 2
Power-on reset ON
DMA 2 4
External interrupt pins 3/5/5 6 10 10/13 15/16 16
Multiplier/divider/multiply-accumulator Multiplication/Division multiply library support (unit operations)
Safety Function RAM parity error detection
Invalid memory access detection
Frequency detection
A/D converter testing
CRC calculation(General purpose、High-speed)
RAM guarding
SFR guarding
On-chip debug ON
Power supply voltage VDD=1.6~5.5V
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)

※1 64-pin BGA (4 × 4) package product has a ROM size of 32 KB to 256 KB.

※2 When I use data flash, an exclusive library (approximately 8.1 K byte) is necessary.


Pin Count / Memory Size Lineup:

RL78/G13-Pin Count/Memory Size


Block Diagram:

RL78/G13 Block Diagram

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


Resources for Software and Hardware

Title Description
My Renesas Create a My Renesas account to use our tool download services, receive e-newsletter/update notifications, and take advantage of our other services.
e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
Forum A forum and community site to share technical information, questions and opinions with others who use Renesas products.
Video Watch videos related to this product.


Software Design Support

Title Description
Web Simulator
RL78/G13 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
IBIS IBIS standard simulation data is required for high-speed board design and can be used to run simulations to examine and troubleshoot issues such as waveform reflection, ringing, and so on, before producing the actual board.
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.
You can filter the sample codes and application notes that are displayed using the below filters.

Confirm below disclaimers

Input Renesas account name and password


The information contained herein has been provided by a member of Renesas Partners. This information is provided on the Renesas website provided for convenience and informational purposes only. Renesas is not responsible for the contents of this page or any changes or updates to the information posted on this page. Certain links provided herein permit you to leave this site and enter non-Renesas sites. These linked sites are not under control of Renesas. Renesas is not responsible for the contents of any linked site or any changes or updates to such sites. These links are provided for convenience and informational purposes only. The inclusion of any link does not imply endorsement by Renesas of any linked site.

Renesas's Publication of information regarding third-party products or services does not constitute an endorsement regarding the suitability of such products or services or a warranty, representation or endorsement of such products or services either alone or in combination with any of Renesas's product or service.