Overview

Description

The RL78/I1C microcomputer integrates the functions required for the metrology of smart electricity meters. They include 24-bit ΔΣ A/D converters, 32-bit Multiply-accumulator, Independent power supply real-time clock, Segment LCD driver supporting up to 8 com, and AES hardware engine that supports the DLMS standard. For single-phase two-wire meters, single-phase three-wire meters, and three-phase three-wire meters, 24-bit ΔΣ A/D converters (Max 4ch) are used for current and voltage sensing to achieve highly accurate power metrology.
Moreover, three-phase four-wire meters are possible to support by 100-pin QFP products, with ΔΣ A/D converters that are used for current sensing and Successive approximation A/D converter unit that is used for voltage sensing.
In addition, the products equipped with 512KB flash memory can also use the code flash area as two partitions, that is 256KB x 2 banks, independently. By Bank programming function in dual-bank mode and Bank swapping, the system can update the firmware without stopping the metrology operation throughout the new firmware downloading and even the bank swapping period.

Features

  • CPU: RL78 core, Max. 32MHz
  • Voltage: 1.7V to 5.5V
  • Package: 64 to 100-pin QFP
  • Memory: SRAM Max. 32KB, Program Flash Max. 512KB

Applications

  • Metering

Documentation

Title Type Date
PDF1.02 MB
Datasheet
PDF10.38 MB日本語
Manual - Hardware
PDF770 KB
Datasheet
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Manual - Hardware
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Application Note
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Application Note
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Application Note
PDF7.04 MB日本語
Brochure
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Brochure
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Brochure
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Brochure
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Brochure
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Brochure
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Brochure
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Brochure
Flyer
PDF4.89 MB日本語
Flyer
Flyer
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Flyer
PDF540 KB
Flyer
PDF14.70 MB日本語
General Reliability Literature
PDF3.23 MB日本語
Guide
PDF2.57 MB日本語
Manual - Development Tools
PDF846 KB日本語
Manual - Development Tools
PDF4.02 MB日本語
Manual - Development Tools
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Manual - Development Tools
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Manual - Hardware
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Manual - Software
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Manual - Software
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Other
Other
PDF306 KB
Overview
PDF1.02 MB日本語
Product Change Notice
PDF4.86 MB日本語
Product Change Notice
PDF3.74 MB日本語
Product Change Notice
PDF1.46 MB日本語
Product Change Notice
PDF150 KB日本語
Quick Start Guide
PDF373 KB日本語
Release Note
PDF2.87 MB
Release Note
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Release Note
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Technical Update
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Technical Update
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Technical Update
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Technical Update
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Technical Update
PDF380 KB日本語