HT5019

HT501X is a low-power, high-performance single-phase power metering SoC chip. It integrates a 32-bit ARM core, 128K flash, 8K SRAM, a hardware EMU module supporting anti-tampering function for phase loss, a high-precision RTC module with temperature self-compensation function, and an LCD driver. It provides a highly integrated single-chip solution for single-phase multi-functional and anti-tampering power meters.

Key features

• Operating voltage range: 2.0V~5.5V
• Operating temperature range: -40°C~85°C
• Lead-free green package
• Based on ARM 32-bit Cortex-M0 CPU Core, supports Thumb-2 instruction set, includes NVIC and scalable debug technology
• Memory resources: 128K Flash + 512 bytes Information Block, 8K SRAM
• High-speed system clock: PLL multiplication mode with wait states, max CPU frequency 39.32MHz; without wait states, max CPU frequency 19.66MHz
• Low system power consumption: minimum 3.7μA in standby mode (Hold mode), minimum 2.9μA in sleep mode (Sleep mode)
• Power monitoring function with internal switching between external system supply VSYS and battery input VBAT
• Built-in 9.5MHz HRC and 32KHz LRC with multi-channel clock detection
• Supports SW debug protocol
• RTC module: external 32K low-frequency crystal with integrated resistor/capacitor and automatic temperature compensation; built-in RTC temperature curve digital compensation coefficients for full temperature range RTC compensation without user software intervention; auxiliary RTC: when external OSC crystal stops, system can switch to internal low-frequency RC for timekeeping
• High-accuracy temperature sensor TPS: temperature sensor consistency better than ±0.5°C over -40°C ~ +85°C range
• LCD: supports 4COM, 6COM, 8COM LCD display, SEG interface supports up to 43 segments
• Up to 6 UART channels, with 2 channels multiplexed for hardware ISO 7816 protocol
• WDT module cannot be disabled in normal mode, ensuring reliable system operation
• Built-in hardware AES/GHASH encryption/decryption algorithm
• Built-in DMA
• Built-in key scan, supports 1×4, 2×4, 3×4, 4×4 keyboard scanning
• Supports I²C, SPI, TIMER CC & PWM
• Active energy measurement error less than 0.1%, dynamic range greater than 5000:1, supports IEC62053-21, IEC62053-22, IEC62053-23
• Three-channel Σ-Δ ADC, simultaneous output of metering parameters for two measurement channels, flexible anti-tamper functionality
• Provides active power, reactive power, apparent power, active energy, reactive energy, and apparent energy
• Supports active, reactive, and apparent pulse output with accessible pulse count registers
• Provides high-accuracy RMS values, frequency, ADC waveform data, and other metering parameters
• Supports SAG and PEAK functions
• Multiple energy accumulation mode options
• Software calibration for gain error and phase error
• Configurable anti-creep function for each of the two metering channels
• Supports EMU low-power mode: EMU low-power operating frequency configurable at 204.8KHz or 32KHz, supports anti-tamper metering for neutral line loss and live line loss, continuous low-power metering, system power consumption better than 650μA
• Supports DC metering