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Overview
Simple water meters and gas meters consist of a mechanical flow meter and a data display.
Meters with prepaid units need to synchronize with a built-in motorized valve to stop flow once the prepaid charge has been used up. Furthermore, prepaid meters require extended battery operation.
Renesas' ultralow voltage operation 8/16-bit microcontrollers with built-in LCD controllers offer a range of solutions for metering applications.
System Block Diagram
Recommended Products
| Block | Semiconductor device | Recommended products | Features, etc. |
|---|---|---|---|
| Flow control | MCU | 78K0/Kx2 | 8-bit AllFlash microcontroller: wealth of on-chip peripheral functions such as a reset circuit and on-chip oscillator, 20 MHz operation, low power consumption, 30 to 80 pins |
| 78K0/Kx2-L | 8-bit AllFlash microcontroller: wealth of on-chip peripheral functions such as a reset circuit, on-chip oscillator, and a clock function, 20 MHz operation, ultra-low power consumption, 16 to 48 pins | ||
| 78K0/Lx3 | 8-bit AllFlash microcontroller: wealth of on-chip peripheral functions such as a segment LCD, reset circuit, and oscillator; low power consumption, 48 to 80 pins | ||
| 78K0S/Kx1+ | 8-bit AllFlash microcontroller: wealth of on-chip peripheral functions such as a reset circuit and on-chip oscillator, 10 to 30 pins | ||
| R8C Family | Timer, 5 V operation, and small package |
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