PMM0912i - UART-RS485/RS422/RS232 Isolated Serial Module

UART-RS485/RS422/RS232 Isolated Serial Module

Key features

• Multi serial to UART: RS485/RS422/RS232 enabled by digital selector from the CPU
• Supports baud rate: 110-256000 bps --> - Transparent conversion.--> - Transparent tape identification.--> - Protocol mode conversion.--> -->
• Electrical interference and noise is greatly reduced by the presence of a large copper area --> - Fixed configuration.--> - Serial frame data designation.--> -->
• 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

Overview

DESCRIPTION

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.

BOARD PINOUT

SCHEMATIC DIAGRAM

DIMENSIONS

Specifications