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℃；