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

RL78/L1A

Low power 16-bit LCD microcontroller with rich analog integration.

 

The ultra low power RL78/L1A microcontroller family with embedded LCD has enhanced analog peripherals such as 12bit A/D converters, 12bit D/A converters, comparators, high accurate rail to rail OPAMPs with switch fabrics and comes with memory up to 128Kbyte Flash.

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.

Available in 80pin and 100pin LFQFP packages this MCU line has been developed especially for healthcare Bio-sensing applications such as blood glucose meter, but is suitable for many other appliances which needs low power with LCD and rich analog peripherals.

 

Main Solutions

Key Features:

ITEM RL78/L1A
Pin Count 80pin 100pin
Part Name R5F11MMx (X = D, E, F) R5F11MPx (X = E,F,G)

Program Flash

48 KB/64 KB/96 KB

64 KB/96 KB/128 KB

Data Flash memory

8 KB

8 KB

SRAM

5.5 KB

Main System Clock

High Speed System Clock

1 to 20MHz : Vdd = 2.7 to 3.6V

1 to 8MHz : Vdd = 1.8V to 2.7V

High speed On-chip Oscillator

HS mode : 1 to 24 MHz (Vdd = 2.7V to 3.6V)

HS mode : 1 to 16 MHz (Vdd = 2.4V to 3.6V)

LS mode : 1 to 8 MHz (Vdd = 1.8 to 3.6V)

Sub System Clock

32.768 kHz (TYP) : Vdd = 1.8 to 3.6V

Low Speed On-chip Oscillator

15 kHz (TYP) : Vdd = 1.8 to 3.6V

I/O port

59

79

Timers

16bit Timer  TAU

8 channels (Timer output x 8, PWM output x 7)
(7 x PWM,. interval timer, External event count, delay counter)

12bit 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

Real time clock (RTC)

1 channel (calendar for 99 years, alarm function, and clock correction function)

Real Time Clock Out

1 channel, 1Hz (Sub System Clock : fsub = 32.768kHz)

17bit Watch Dog Timer

1 channel

Clock output / Buzzer output

2 channels

12bit A/D converter

10 channels

14 channels

12bit D/A converter

2 channels

2 channels

Operation Amplifier

Rail to Rail OpAMP w/ MUX

2 channels x 2 MUX

2 channels x 4 MUX

General Purpose

1 channel

1 channel

Comparator

1 channel

1 channel

Serial Communication Interface

CSI (SPI) : 1 channel /  UART : 1 channel / Simple I2C : 1 channel

CSI : 1 channel / UART : 1 channel / Simple I2C : 1 channel

CSI : 1 channel / UART : 1 channel / Simple I2C : 1 channel

CSI : 1 channel / UART : 1 channel / Simple I2C : 1 channel

I2C bus

1 channel

LCD controller

Segment

32 (28)

45 (41)

Common

4 (8)

Data Transfer Controller

30 sources

Event Link Controller

Event : 22, Event  trigger: 8

Key Interrupt

8

Power On Reset

Power on reset : 1.51V +/- 0.04V

Power down reset  : 1.50 +/- 0.04V

Low Voltage Detector

Rising : 1.88V to 3.13V

Falling : 1.84V to 3.06V

On-chip debugging Yes
Power Supply Voltage Vdd = 1.8V to 3.6V
Operation Temperature Range Ta = -40℃ to +85℃

 

Pin Count / Memory Size Lineup:

Program Flash
SRAM
128KB
5.5KB
 
96KB
5.5KB
64KB
5.5KB
48KB
5.5KB
 
Pins
Package
80
LFQFP
100
LFQFP

 

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.)

 

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.
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

Disclaimer:

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.

Menu
Contact