The General-purpose microcontroller with lower operating current than RL78/G13

RL78/G13A microcontrollers share the functionality of RL78/G13 products but have a much (over 40%) lower operating current of 47 μA/MHz (typ.).Operation is guaranteed at ambient temperatures up to 105°C while this is not the case for RL78/G13 products with 384 or 512 Kbytes of code flash memory.RL78/G13A microcontrollers can be used in a wide variety of applications, from home and consumer appliances to industrial equipment.

Key Features:

Pin Count 44 pins 48 pins 64 pins 100 pins
CPU Core RL78 Core
Prpgram Flash (KB) 384 KB, 512 KB
Data Flash (KB) 8 KB
SRAM (KB) 24 KB, 32 KB
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 to 5.5 V)
I/O port TOTAL 40 44 58 92
N-ch open drain I/O (6 V tolerance) 4 4 4 4
N-ch open drain I/O (VDD tolerance) 10 11 15 24
Timer 16 bit (TAU) 8 8 8 12
12-bit interval timer 1
Watchdog timer 1
Serial Interface CSI:1 ch/UART: 1 ch / simplifiedI2C: 1 ch 2 1 - -
CSI:1 ch/UART: 1 ch / simplifiedI2C: 2 ch - 1 2 3
CSI:1 ch/UART(LIN-bus corres-pondence): 1 ch / simplifiedI2C: 1 ch - - - -
CSI:2 ch/UART(LIN-bus corres-pondence): 1 ch / simplifiedI2C: 2 ch 1 1 1 1
I2C Bus 1 1 1 2
8/10-bit resolution A/D converter 10 10 12 20
Clock / Buzzer output 2
Power-on reset ON
DMA 2 2 2 4
External interrupt pins 7 10 13 13
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 to 5.5 V
Operating ambient temperature TA = - 40 to + 85 ℃ (A-version for consumer applications)
TA = - 40 to + 105 ℃ (G-version for industrial applications) 

Pin Count / Memory Size Lineup:

Program Flash



Block Diagram:

* Format of User Option Byte differs slightly from RL78/G13. (Please refer TN-RL*-A0097A/J,E for details.)

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.


Software Design Support

Title Description
e² studio This integrated development environment (IDE) is based on the popular combination of the open-source Eclipse IDE and its CDT plug-in that enables C/C++ language development.
CS+ This integrated development environment (IDE) can be used for coding, assembly, compiling, and simulation. CS+ is also included with starter kits.
E2 emulator Lite This entry-level on-chip debugging emulator provides functionality equivalent to that of the E1 emulator at a low price.
E2 emulator This on-chip debugging emulator has advanced features that improve the efficiency of development. In addition to the basic functions from debugging to flash programming, this emulator supports hot plug-in and external triggers as standard items. This emulator also helps to reduce development time by downloading at high speeds (compared to the E1 emulator) and the ability to work in combination with various solutions such as the tuning of current drawn by systems under development.
E1 emulator This on-chip debugging emulator is a standard model which provides basic debugging functions (production is to be discontinued at the end of December 2019).


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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