71M6545
71M6545 is Metrology Processors manufactured by Silergy.
DESCRIPTION
The 71M6545/71M6545H metrology processors are based on 4th-generation metering architecture supporting the 71M6xxx series of isolated current sensing products that offer drastic reduction in ponent count, immunity to magnetic tampering, and unparalleled reliability. The 71M6545/71M6545H integrate our Single Converter Technology® with a 22-bit delta-sigma ADC, a customizable 32-bit putation engine (CE) for core metrology functions, as well as a user-programmable 8051patible application processor (MPU) core with up to 64KB flash and up to 5KB RAM.
An external host processor can access metrology functions directly through the SPI™ interface, or alternatively through the embedded MPU core in applications requiring metrology data capture, storage, and preprocessing within the metrology subsystem. In addition, the devices integrate an RTC, DIO, and UART. A plete array of ICE and development tools, programming libraries, and reference designs enable rapid development and certification of meters that meet all ANSI and IEC electricity metering standards worldwide.
Shunt Resistor Sensors
C NEUTRAL
LOAD
Resistor Dividers 71M6xx3 71M6xx3 71M6xx3
HOST
POWER SUPPLY
This system is referenced to Neutral
NEUTRAL
Pulse Transformers
SPI_CKI SPI_DI SPI_DO SPI_CSZ XFER_BUSY
MUX and ADC
IADC0 IADC1
} IN-
VADC10 (VC)
IADC6 IADC7
} IC
VADC9 (VB)
IADC4 IADC5
}
VADC8(VA)
IADC2 IADC3
} IA
V3P3A V3P3SYS GNDA GNDD
PWR MODE CONTROL
71M6545/H
REGULATOR
TEMPERATURE SENSOR
VBAT_RTC
BATTERY MONITOR
VREF
SERIAL PORT RX...
