5G Era-Smart Water Meters Gradually Approaching Smart LifeIssuing time:2020-05-19 13:43
Smart water meter is a new type of water meter that uses modern microelectronics technology, modern sensor technology, and smart IC card technology to measure water consumption, transmit water data and settle transactions.    3PEAK RS485（TPT487/TPT75176）Features： ◆ Comply with EIA RS-485 / RS-422 standard ◆ Data rate: 10Mbps; ◆ Half duplex； ◆ A bus can connect up to 256 transceivers; ◆ temperature range：-40℃~+125℃； 3PEAK LDO（TPL9032）Features： ◆ Wide input voltage range：1.7V~5.5V； ◆ Output voltage: 0.75V~5V, a variety of fixed voltage outputs are optional; ◆ Output current：300mA； ◆ Ultra low noise：8.61uArms； ◆ Super high PSRR：85dB@1KHz； 60dB@100KHz； ◆ Encapsulation：SOT23-3, SOT23-5, SOT-89, 1x1 DFN-4 ； 3PEAK LDO（TPL720）特点： ◆Wide input voltage range: 2.4V~6V, support 4 dry battery input; ◆ Internal maximum output current limit：400mA； ◆ Ultra low quiescent current：1uA； ◆ high PSRR：50dB@1KHz； ◆ Optional output voltage accuracy：1% ； ◆ Multiple fixed output voltage options； ◆ Encapsulation：SOT23-3, SOT23-5, SOT-89, 1x1 DFN-4； Features of Huada's low-power MCU (HC32L13x series)： ◆ 48MHz Cortex-M0+ 32 位 ; ◆ Wide input voltage range：1.8V~5.5V； ◆ Ultra low power consumption： – 0.5μA @ 3V Deep sleep mode： All clocks are off, power-on reset is valid, IO status is maintained, IO interrupt is valid, power consumption when all registers, RAM and CPU data are saved – 0.9μA @3V 深度睡眠模式+ RTC 工作； – 7μA @32.768kHz low-speed working mode: MCU and peripherals run, run the program from FLASH； – 35μA/MHz@3V@24MHz sleep mode: MCU stops, peripherals are running, and main clock is running； – 130μA/MHz@3V@24MHz working mode: MCU and peripherals run, run the program from FLASH； – 4μS ultra-low power wake-up time； ◆ 4*26 / 6*24 / 8*22 LCD drive； ◆ Hardware perpetual calendar RTC module； ◆ 12-bit 1Msps sampling high-speed and high-precision SARADC； ◆ Working conditions：-40 ~ 85℃；  |
