PMM - Power Meter Monitor


UART-RS485/RS422/RS232 Isolated Serial Module

PMM-da-720-series-image-1-(1).jpg | PMM


  • Multi serial to UART: RS485/RS422/RS232 enabled by digital selector from the CPU
  • Supports baud rate: 110-256000 bps
  • Electrical interference and noise is greatly reduced by the presence of a large copper area
  • Compatible with 3.3V and 5V power source
  • Isolated power supply
  • Data isolation: up to 5000 VRMS isolation rating with up to 12.8 kV surge capability
  • Protected from Overvoltage Line Faults up to ±60V
  • ±25kV ESD protection
  • 120 & 390 Ohm terminal resistors
  • Operating temperature: -40 to 80oC
  • Module size: 43mm * 18mm * 5mm
  • Vertical and horizontal mounting options, compatible with standard DIP/SIP pinout
  • RoHS Compliant
  • Proven PCB Layout
  • Fully Assembled and Tested
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PMM0912i is an isolated multi serial to UART converter module, it can be considered as the 3 in 1 media board. It can convert the three different serial communication types; RS485, RS422 and RS232 to UART.

All the serial communication types can’t work all together so PMM0912i has a digital input selector that allows the user to choose which media is currently in use so that only one media to UART conversion is running at a time

The module contains power and data isolator which protects the circuitry and CPU from overvoltage. It can operate normally with a voltage range of (3V to 3.6V) or (4.5V to 5.5V) and needs an external power supply.




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