Renesas Electronics Expands the RL78 Family of Microcontrollers with Industry’s Highest Segment Count LCD Controller

  Renesas Electronics Expands the RL78 Family of Microcontrollers with
  Industry’s Highest Segment Count LCD Controller

The New RL78/L13 Group Microcontrollers Support Up to 376 Segments and Operate
                  Down to 0.6 µA with Full Calendar Function

Business Wire

SANTA CLARA, Calif. -- November 06, 2012

Renesas Electronics Corporation (TSE:6723), a premier supplier of advanced
semiconductor solutions, today announced the RL78/L13 Group of low-power
microcontrollers (MCUs) with on-chip LCD controller offering up-to 376 segment
drive capability in an 80-pin package [Note 1]. These new MCUs are optimal for
consumer, health and industrial equipment that are equipped with an LCD panel.

RL78/L13 (Photo: Business Wire)

RL78/L13 (Photo: Business Wire)

“As people become accustomed to easy and intuitive interaction with their
electronics at work and at home, they increasingly look for greater
functionality from their electronic devices and equipment,” said Ritesh Tyagi,
senior director, Microcontroller Products & Solutions Marketing, Renesas
Electronics America. “The RL78/L13 devices with on-chip LCD driver complement
Renesas’ expanding RL78 MCU family, allowing more information to be displayed
for greater convenience and to enable more intelligent decision making.”

LCD panels are widely used in both consumer and industrial equipment,
including home appliances such as washing machines, stoves and microwave
ovens, health equipment such as blood pressure monitors and blood glucose
monitors, and portable test equipment and meters. Renesas has already released
the RL78/L12 low-power MCUs that reduce [Note 2] power consumption by about
30% compared to earlier Renesas products as on-chip LCD driver MCUs. There is
now, however, strong demand for an increase in the number of segments in
on-chip LCD driver MCUs to support the large increases of information shown on
LCD panels due to needs to display information such as power saving status
ecological information and the additional information associated with advanced

At the same time, the Induction Heating (IH) method is beginning to be widely
used in IH cooking equipment, and industrial equipment as well. In this IH
heating equipment, high-functionality timers are required to control the IH
inverter circuit. Renesas is now releasing the RL78/L13 Group of MCUs to
respond to these needs.

Key Features of the RL78/L13 Group of MCUs

(1) Achieves the industry's highest LCD display segment count and contributes
to richer information displays using LCD panels

The new RL78/L13 MCUs can drive up to 376 segments [Note 3] achieving the
industry's largest number of LCD segments in an 80-pin MCU. This allows even
more information, such as numbers and symbols, to be displayed on the LCD
panels included in home appliances and other equipment.

(2) Provides comparators and high-functionality timers to support system
control for IH equipment

These new MCUs include comparators that are effective for zero cross detection
[Note 4] in AC power supply waveforms and high-functionality timers that
support variable pulse width modulation (PWM) control in real time and are
thus optimal for IH heating control. These high-functionality timers include a
forcible output stop function and can contribute to improved safety in end

(3) Provides a high-precision real-time clock (RTC) [Note 5] function that
provides a perpetual high-precision RTC counter

Compared to the RTC provided in the RL78/L12 Group products, the RTC in the
RL78/L13 products increases the correction resolution [Note 6] and thus
increases the clock precision. Also, the RTC calendar register, which
indicates the time and date, retains its value without being cleared by reset
factors external to the MCU. These functions make these products optimal for
systems such as measurement equipment and meters that require a permanent,
high-precision RTC counter.

In addition, these new products inherit the superlative features of the RL78
Family, such as achieving the industry's lowest levels of power consumption,
supporting the IEC 60730 standard, which is a required home appliance safety
standard in Europe, and reducing total system costs by taking advantage of
on-chip peripheral functions integrated on the MCU. These features allow users
to increase end product functionality, reduce system costs, and improve

Renesas continues to develop on-chip LCD drive MCUs that match market needs
and continue to expend their product line.

Also, Renesas will be displaying new products at the Embedded Technology 2012
Exhibition to be held at PACIFICO YOKOHAMA from November 14 to November 16
this year.

The RL78/L13 Group of MCUs consists of 24 models in 64-pin and 80-pin packages
and flash memory capacities from 16 KB to 128 KB.

Pricing and Availability

Samples of the RL78/L13 Group of MCUs are scheduled for availability beginning
November 2012, and price varies depending on the pin-count, package and memory
storage configurations. For example, samples of the R5F10WMGAFB MCU with
80-pin LQFP package (12mm square) with embedded 8 KB RAM is planned to be
priced at US$1.70 per unit when ordered 10,000 units. Mass production of the
RL78/L13 devices is scheduled to begin in February 2013 and is expected to
reach a volume of 8,000,000 units per month for the total of the products of
the group in August 2013. (Pricing and availability are subject to change
without notice.)

[Note 1] The segment display method makes it possible to, for example, display
a single seven part (segment) digit in a calculator display with fewer than
seven signals by time division control of the on/off state of each segment.

[Note 2] When comparing current consumption in the LCD display state in HALT
mode with the subsystem clock operating with the Renesas 78K0R/Lx3 MCUs.

[Note 3] This is the total number of segments with 8 columns × 47 segments for
80-pin package products.

[Note 4] Zero cross detection: Function that detects the passage of an AC
voltage through the zero point (the zero cross point). This function can be
used to suppress surge currents, back electromotive force, and switching noise
in power supply circuits.

[Note 5] RTC: A function that provides clock and calendar functions and
continuously counts the time.

[Note 6] The RTC in the RL78/L13 Group products includes a function to
periodically correct time errors. The correction resolution expresses how
finely this time error correction is divided. The higher the correction
resolution, the higher precision correction it is possible to implement, which
can lead to a higher precision RTC function.


The new RL78/L13 Group incorporates SuperFlash® technology licensed from
Silicon Storage Technology, Inc. SuperFlash® is a registered trademark of
Silicon Storage Technology, Inc., U.S.A., in the United States, Japan, and
other countries. All other names of products or services mentioned in this
press release are trademarks or registered trademarks of their respective

About Renesas Electronics Corporation

Renesas Electronics Corporation (TSE: 6723), the world’s number one supplier
of microcontrollers, is a premier supplier of advanced semiconductor solutions
including microcontrollers, SoC solutions and a broad-range of analog and
power devices. Business operations began as Renesas Electronics in April 2010
through the integration of NEC Electronics Corporation (TSE:6723) and Renesas
Technology Corp., with operations spanning research, development, design and
manufacturing for a wide range of applications. Headquartered in Japan,
Renesas Electronics has subsidiaries in 20 countries worldwide. More
information can be found at

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