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RL78/I1A

Microcontrollers that output high-resolution PWM for fine dimming and toning of LED lighting

 

RL78/I1A microcontrollers realize PWM output of a minimum 0.98 ns resolution using 64 MHz timer operation and dithering function, supporting fine dimming and toning. Through cooperation between the PWM timer and comparator/external interrupt input, PFC control and protection functions can be realized by hardware. Low consumption current of 3.3 mA during LED and power supply control and 0.23 μA when waiting for UART (DALI) communication allows the power consumption of the system to be reduced. DALI/DMX512 lighting communication and Power Management Bus (PMBus) and System Management Bus (SMBus) power communication are supported. These microcontrollers can be used in LED lighting equipment and digital power supplies.

 

Key Features:

ITEM RL78/I1A
Pin Count 20-pin 30-pin 38-pin
Part Name R5F1076xxxSP  R5F107AxxxSP R5F107DxxxSP
I/O Port Total 16 26 34
CMOS I/O 13 23 29
CMOS input 3 3 5
Timer 16-bit timer (TAU) 8 channels (no timer output) 8 channels (timer output: 1, PWM output: 1) 8 channels (timer outputs: 3, PWM outputs 3)
16-bit timer (KB) 2 channels (PWM outputs: 4) 3 channels (PWM outputs: 6)
16-bit timer (KC) 1 channel (PWM outputs: 3) 1 channel (PWM outputs: 6)
Real time clock (RTC) 1 channel (no output) 1 channel (1 output)
8/10-bit A/D converter 6 channels 11 channels
Comparator 4 channels 6 channels
Programmable gain amplifier 1 channel (Input: 4 channels) 1 channel (Input: 6 channels)
Serial interface UART (Supporting LIN-bus and DMX512) 1 channel  
UART (Supporting DALI communication) 1 channel
UART - 1 channel -
CSI/UART (Supporting LIN-bus and DMX512): - - 1 channel
Vectored interrupt sources 7 external / 27 internal 10 external / 30 internal 11 external / 30 internal
Operating ambient temperature -40 to +105 ℃ (R5F107xxxGSP) / -40 to +125 ℃ (R5F107xxxMSP)

 

Pin Count / Memory Size Lineup:

RL78/I1A-Pin Count/Memory Size

 

Block Diagram:

RL78/I1A 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 for the RL78/G1F. Please use this as reference data when developing your set.

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