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Low pin and internal configurable analog MCU


The RL78/G11 microcontroller line-up concept is based on small packages like 20 to 25pin, in small 16KB flash memory and rich analog peripherals such as A/D converters, D/A converters, comparators and PGA and these are configurable as PGA+ADC+VBGR, PGA+CMP, CMP+DAC/VBGR, or PGA+CMP+DAC/VBGR. Using the smart  features like DTC and ELC a lot of peripherals can be connected internally to reduce CPU workload and can save overall power consumption.  It also supports very low power operation (100 uA @ 1 MHz ) and a high speed 4µs wake up. Available in small 3x3mm² WFLGA , 4x4mm² HWQFN and standard 20pin LSSOP, this MCU line is suitable for sensor application, Lighting/power sources and many small appliances.


Key Features:

Item RL78/G11

Pin Count




Part Name




Prgram Flash (KB)

16 KB

Data flash memory (KB)

2 KB


1.5 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 2.7 V

1 to  8 MHz: VDD = 1.8 to 2.4 V, 1 to  4 MHz: VDD = 1.6 to 1.8 V

High-speed on-chip oscillator clock (fIH) Max: 24 MHz

HS (High-speed main) mode: 1 to 24 MHz (VDD = 2.7 to 5.5 V),

HS (High-speed main) mode: 1 to 16 MHz (VDD = 2.4 to 5.5 V),

LS (Low-speed main) mode: 1 to 8 MHz (VDD = 1.8 to 5.5 V),

LV (Low-voltage main) mode: 1 to 4 MHz (VDD = 1.6 to 5.5 V),

LP (Low-power main) mode: 1 MHz (VDD = 1.8 to 5.5 V)

Middle-speed on-chip oscillator clock (fIM) Max: 4 MHz

I/O Port







CMOS Input



16-bit timer

4 channels (3 x PWM, interval timer, External event count, delay counter)

Watchdog timer

1 channel

16bit - Timer KB

1 channel (counter, compare & dithering count, PWM output with dithering function and smooth start, interleave PFC output mode, drive 1 half bridge

12-bit interval timer

1 channel (low power timer, usable also in STOP, HALT mode)

8/16-bit interval timer

2 channels (8 bit)/1 channels (16 bit)  (cascadable low power timer, usable also in STOP, HALT mode to create long sleep intervals

Timer output


Clock output/buzzer output


2.44 kHz, 4.88 kHz, 9.76 kHz, 1.25 MHz, 2.5 MHz, 5 MHz, 10 MHz

(Main system clock: fMAIN = 20 MHz operation)

10-bit resolution A/D converter


10 channels

11 channels


1 channel

8-bit D/A converter

2 channels

Comparator (Window Comparator)

2 channels


1 channel

Data Operation Circuit (DOC)

Comparison, addition, and subtraction of 16-bit data

Serial interface

[20-pin products]

I²C: 2 channel, CSI: 3 channel/UART: 2 channel/simplified I²C: 3 channel

[24-pin, 25-pin products]

I²C: 2 channel, CSI: 4 channels/UART: 2 channel/simplified I²C: 4 channels

Data transfer controller (DTC)

23 sources

24 sources

Event Link Controller (ELC)

Event input: 17

Event trigger output: 4

Event input: 18

Event trigger output: 4

Vectored interrupt







Key interrupt



Power-on-reset circuit

• Power-on-reset: 1.51 ± 0.04V (TA = -40 to +85°C) / 1.51 ± 0.06V (TA = +85 to +105°C)

• Power-down-reset: 1.50 ± 0.04 V (TA = -40 to +85°C) / 1.51 ± 0.06V (TA = +85 to +105°C)

Voltage detector

Power on

1.67 V to 4.06 V (14 stages)

Power down

1.63 V to 3.98 V (14 stages)

On-chip debug function

Provided (Disable to tracing)

Other features Internal voltage reference (VBGR),  Interrupt flag output (INTFO)

Power supply voltage

VDD = 1.6 to 5.5 V

Operating ambient temperature

TA = -40 to +85°C (Consumer applications)

TA = -40 to +105°C (Industrial applications)


20-pin LSSOP

4.4 x 6.5mm²,

0.65mm pitch

24-pin HWQFN

4 x 4mm²,

0.50mm pitch

25-pin WFLGA

3 x 3mm²,

0.50mm pitch


Pin Count / Memory Size Lineup:

Program Flash


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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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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