The RL78 Family 16-bit microcontrollers are the convergence of the high CPU performance of the 78K0R and the superb on-chip
functions of the R8C and the 78K, and offer a comprehensive lineup
of 10-128 pin and 1-512 KB products for the 8/16-bit market.
Realizing industry-leading low power consumption at 46 μA/MHz
consumption during normal operation and 0.57 μA/MHz during clock
operation, you can expect greatly improved power efficiency using
RL78 microcontrollers. Built-in features such as a high-precision
(±1%) high-speed on-chip oscillator, background operation data flash capable of 1 million rewrites, temperature sensor, and interface ports for multiple power supplies help reduce system costs and size.
The RL78/G1x (general purpose group) is a true low power MCU series within the RL78 Family.
The RL78/L1x microcontroller family is a peripheral rich family of true low power microcontrollers integrating LCD controller/driver, suitable for industrial and consumer LCD display applications. RL78/L1x offer unique display driver functionality to reduce system power consumption.
The RL78/I1x microcontrollers are part of the RL78 microcontroller family with rich analog integration and support high temperature operation. RL78/I1x is ideal for application specific solutions but also suitable for many general purpose application In the mass market with tough environment operation.
The RL78/F1x microcontrollers are suitable for automotive applications. As the successors of both the 78K0R and R8C, they realize low power consumption and are equipped with built-in functions suitable for automotive applications such as CAN communications, advanced timer, and safety functions.
RL78/D1x (Automotive Only)
Renesas is introducing the RL78/D1x as an optimized solution for the BRICs and low-end instrument cluster markets. The RL78/D1x is the successor of 78K0/Dx2 or UPD78082x microcontrollers and suited for car instrument cluster, built-in car instrument cluster dedicated features such as Sound Generator, Stepper Motor Controller/Driver and LCD Segment Controller/Driver etc.
Product Longevity Program(PLP)
Renesas Electronics is operating the Product Longevity Program (PLP) to help customers select the most appropriate part
for applications that require long life cycles.
Find an RL78 Microcontroller
Find by Specifications or Function
Parametric Search (RL78 Family)
Learn more about the features of the RL78 Family that offer true low power & low voltage operation, high quality & safety, and broad scalability.
Development Environment for the Renesas RL78 Family MCUs
Renesas Electronics supports all aspects of application development for the RL78 Family with products such as the integrated development environments e² studio and CS+, real-time OSes, and programming tools.
Useful Tools for Development
1. RL78 Quick Solution
The RL78 Quick Solution page presents "easy to build" solutions that will assist in your product development.
Learn more >>
2. RL78 WEB Simulator
Carry out prototype development and power consumption simulation for the RL78 Family easily without purchasing
Learn more >>
3. Applilet EZ PL for RL78
Applilet EZ PL for RL78 is software that allows users with no programming language knowledge to easily create a
microcontroller application program, in a manner similar to that of solving a jigsaw puzzle.
Learn more >>