1、Featured Features
· Support S-class power quality analysis
· Supports detection for over-current over-voltage under-current undervoltagevoltage dip and voltage swell
· The fastest RMS detection is 10ms
· Support DC metering
· Waveform recording and caching can be used in harmonic analysis scenarios and Maximum support up to 64 harmonics analysis
2、Working voltage and Temperature
· Working voltage: 2.2V~3.6V
ADC and metering working voltage: 2.6V ~ 3.6V
· Operation Temperature: -40~+85℃
· Storage Temperature: -55~+150℃
3、Working Current:
· Normal mode: [email protected](V94XX/V94XXA)
· Normal mode: [email protected](V94XXP)
· Idle mode: 0.379 mA @6.5536MHz
· Sleep mode (LCD active): 9.3μA(V94XX/V94XXA)
· Sleep mode (LCD active): 12μA(V94XXP)
· Sleep mode (LCD inactiven): 3.1μA
· Deep Sleep mode: 2.9μA
4、MCU
· 32 bits Cortex-M0 with maximum 26 operation speed.
· Single cycle multiplier.
· Standard 2-wires SWD debug interface.
· Maximum 512KB FLASH memory is built in V94XX FLASH has write protection and encryption functions and supports ISP and IAP .
· Maximum 64KB SRAM is built in V94XX SRAM with parity data can be retained in shallow sleep mode.
· 256 bytes SRAM with data retention under deep-sleep mode.
· Support abort exception detection including FLASH check-sum error SRAM parity error memory address error and memory align error.
5、Interface Controller
· Maximum 5 UART controllers with parity check.
· Each UART TX channel can be coupled with IR carrier for IR transmission.
· Maximum 1 ISO7816 controllers.
· Maximum 1 SPI master/slave controllers.
· Maximum 1 I2C master/slave controller.
· 4 32 bits timers.
· 4 16 bits PWM timers.
· 4 channels DMA controller.
· 128/192/256 bits AES CODEC.
· ECC encrypt/decrypt accelerated engine.
· Dual fr
· 4COM/6COM/8COM.
· 1/3 or 1/4 bias.
· Support multi-kinds of scan frequency.
· LCD voltage: The default output is about 3.3V. Adjustment range: 2.7~3.6V 0.06V per step.
· Watch dog timers with programmable period.
· Support multiple wake-up sources under each mode.
· Maximum 75 GPIOs.
· Maximum 14 GPIOs can be external interrupt and wakeup sources under all modes.
6、Analog Controller
· 16bits ADC with 10Ksps and Maximum 9 external input.
· ADC supports manual sample mode or auto sample mode.
· Maximum 2 comparators with single end input or differential input.
· em
· em
· Support external 32.768 KHz crystal or 6.5536MHz crystal (optional).
· Support crystal absent detect for both 32.768 KHz and 6.5536 MHz crystal.
· Each clock can be selected to be system clock.
· Support digital clock divider up-to 1/256.
· Support low voltage detection with programmable level.
· Support DVCC1 power on reset
7、RTC
· Support 1ppm RTC manual calibration.
8、Metering Features
· 3 independent oversampling ∑/∆ ADCs: one of the ADC (channel A) can measure voltage the other ADC with multifunction measure current or temperature etc.
· Highly Metering Accurate:
Supports the requirements of IEC 62053-21:2020/ IEC 62053-22:2020 and IEC 62053-23:2020.
Less than 0.1% error in active energy metering over a dynamic range of 5000:1
Less than 0.2% error in reactive energy metering over a dynamic range of 5000:1
Less than 0.5% error in current/voltage RMS over a dynamic range of 5000:1.
· Supports various measurements:
· DC components of voltage and current signal
· Total/fundamental instantaneous/ average current/voltage RMS
· Total instantaneous/ average active /reactive/apparent power
· 10 or 12 cycles of total RMS
· Fundamental instantaneous/average active /reactive/apparent power
· active/ reactive energy active/ reactive/ apparent power Irms constant value and fundamental wave are selectable
· Line frequency and phase
· Software calibration
· Accelerating calibration when weak current is applied.
· Current input: current shunt resistor CT Hall cell and TMR supportive
