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RL78/L13

Low power consumption, standard LCD microcontrollers suitable for LCD display of home appliances or measurement devices

 

RL78/L13 microcontrollers have a built-in segment LCD driver. Three LCD driving voltage generation methods (external resistance division, capacitive split, and internal voltage boost) are supported, corresponding to a variety of segment LCD panels. They realize low current consumption (*1): external resistance division: 1.61 μA (*2), and internal voltage boost: 1.42 μA, and capacitive split: 0.77 µA. With a lineup of 64/80-pin products supporting up to 376 segments, these microcontrollers are perfect for devices with built-in LCD panels such as home appliances and healthcare devices.

(Remarks)
(*1) Current (typ.) at 1/3 bias, subclock operation, HALT mode, and RTC operation
(*2) Registance value for external registance division = 1000 kΩ

 

Key Features:

ITEM RL78/L13
Pin Count 64-pin 80-pin
Memory Program Flash 16 to 128 KB
Data Flash 4 KB
SRAM 1 to 8 KB
CPU RL78 CPU Core
Operating Frequency 24 MHz (max.)
Clock Crystal / Ceramic 1 to 20 MHz (VDD=2.7 to 5.5 V), 1 to 8 MHz (VDD=1.8 to 2.7 V),
circuit Resonators 1 to 4 MHz (VDD=1.6 to 1.8 V)
  subsystem clock 32.768 kHz (VDD=1.6 to 5.5V)
  High Speed OCO 24 MHz +-1 %
  Low Speed OCO 15 kHz +-15 %
  PLL Built-in
I / O 49 65
Timer TAU(16-bit timer) 8 ch (with 1 ch remote control output function) (timer outputs: 8, PWM output 7 ch)
KB20(16-bit timer) 1 ch (PWM outputs: 2)
12-bit timer Interval timer x 1 ch (15 kHz/32.768 kHz)
High accuracy real- 1 ch
time clock
RTC output 1
8/10-bit A/D Convertor 9 ch 12 ch
Comparators 2 ch
Serial CSI / UART / Simplified I2C CSI: 2 ch , UART: 3 ch, LIN: 1 ch CSI: 2 ch , UART: 4 ch, LIN: 1 ch
interface Simplified I2C: 1 ch (max) Simplified I2C: 2 ch (max)
  I2C (Multi-master) 1
Interrupt 11 (external) / 32 (internal) 11 (external) / 35 (internal)
LCD   Internal voltage boosting method, capacitor split method, and external resistance division
method are switchable
Segment signal output 36(32) 51(47)
Common signal output 4(8)
Multiplier and divider / 16*16,32/32,16*16+32
multiply-accumulator circuit
DMA 4
Other peripheral functions LVD, POR, Key return, Clock output/buzzer function
Safety function WDT, TRAP instruction, Flash memory CRC operation, RAM parity error detection, Illegal
memory access, Frequency detection, RAM guard, SFR guard, A/D test

 

Pin Count / Memory Size Lineup:

RL78/L13-Pin Count/Memory Size

 

Block Diagram:

RL78/L13 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
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 for the RL78/G1F. 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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