Overview
Description
RL78/I1B microcontrollers adapt various electricity meter metrologies for different regulations by country and realize efficient power measurement by the combination of low active current 96uA/MHz, standby current 0.66uA (Halt mode with 32kHz oscillator and RTC backup on), 24-bit ΔΣA/D converter, phase adjustment circuits and high pass filter. CPU clock frequency can be minimized, taking advantage of the efficient power measurement features, which include the low power ΔΣ A/D converter 0.53mA/ch. RL78/I1B microcontrollers have a +/- 1% high-accuracy high-speed on-chip oscillator with +/-0.05% frequency correction function. The benefit of the accurate on-chip oscillator keeps the system robust even when the external oscillator is stopped.
Features
- CPU: RL78 core, Max. 24MHz
- Voltage: 1.9V to 5.5V
- Package: 80 to 100-pin QFP
- Memory: SRAM Max. 8KB, Program Flash Max. 128KB
Comparison
Applications
Design & Development
Support
Support Communities
Support Communities
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RL78 I1B R5F10MMG , Required data flash and store 15 byte in this data flash memory
Dear Sir, i am using the R5F10MMG MCU in our project and development almost done, we required in end time of project data flash memory for save the 15 bytes in this data flash memory. Please guide me and help for this issues. Thanks & Regards Shivali Singh
Sep 2, 2021 -
executing Halt instruction from RAM
hello everyone, i was trying to implement fast CRC in my RL78/I1B module. For that i purpose i was studying its datasheet and it states that in order to calculate CRC i have to execute HALT and RET instruction from RAm and don't know how to do ...
May 7, 2018 -
Interrupts Intialization (GCC for Renesas 4.9.2.201801-GNURL78 Linux Toolchain (ELF Format)
I am using compiler “GCC for Renesas 4.9.2.201801-GNURL78 Linux Toolchain (ELF Format)” for RL78/I1b MCU, I don’t know how to setup interrupt handler functions. I tried below interrupt code which was generated from CS+ CA RENESAS IDE, it compiles successfully but i didn ...
Sep 1, 2018
FAQs
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Reference Materials for Migration from R8C to RL78
We have the following reference materials available. ・Replacing the program for R8C with the program for RL78Replacement Guide for R8C Family to RL78 Family (CcnvNC30) － Software for converting a C source file for NC30 to a C source file for CC-RLCcnvNC30 C Source Code Converter ・Guide for migration from ...
Dec 28, 2020 -
RL78 Family: Reset signal generated by the power-on reset circuit (POR)
... G1H, RL78/G1M,RL78/G1N, RL78/G1P, RL78/G22, RL78/G23, RL78/G24, RL78/H1D, RL78/I1A, RL78/I1B, RL78/I1C, RL78/I1D, RL78/I1E, RL78/L12, RL78/L13, RL78/L1A, RL78/L1C Japanese
Apr 28, 2025 -
Reference Materials for Migration from 78K0/Kx2 to RL78
We have the following reference materials available. - How to replace a program for 78K0 with a program for RL78 Replacement Guide for 78K0 Family to RL78 Family (CcnvCA78K0) Software for converting a C source file for CA78K0 and CA78K0R to a C source file for CC-RL CcnvCA78K0 C Source ...
Dec 21, 2020
Videos & Training
The easy-to-build RL78 Quick Solutions feature Renesas' ultra-low power RL78 MCUs and analog devices. These solutions showcase device combinations that improve design performance and power efficiency to support your product development.
News & Blog Posts
Blog Post
Feb 9, 2023
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