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FM3540

Fairchild Semiconductor
Part Number FM3540
Manufacturer Fairchild Semiconductor
Description 4/5 Bit Multiplexed/ 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches
Published Mar 30, 2005
Detailed Description FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches October 2...
Datasheet PDF File FM3540 PDF File

FM3540
FM3540

Overview
FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches October 2001 FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches General Description The FM3540/60 multiplexes the I-port input signals with two internal non-volatile registers that can be loaded through the serial port.
The multiplexer is selected via the serial port and defaults to the I-Port upon power-up.
Pull-up resistors are provided on the input port to accommodate connections to open drain outputs and to eliminate the need for external resistors.
The device supports a choice of either 2.
5V output or Open Drain Outputs for easy interface to devices with different VDD Levels.
The serial port is an IIC compatible slave only interface and supports both 100kbits and 400kbits modes of operation.
The port is used to read the I-Port, Write Data to the internal non-volatile registers and select whether the I-Port or one...


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