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.
Features
- I Extended Operating Voltage Range 3.0V-5.5V I IIC Compatible Slave Interface. I ESD performance: Human body model > 2000V I Choice of 2.5V outputs or Open-Drain Outputs
Block Diagram
Non_Mux_Out
I[4:0]
Y[4:0] Mux1 SOPRA Mux2 SOPRB
MXSB, MXSA
IIC Read Logic
Mux3 Control Logic
MUXSEL OVRD
SDA SCL
IIC Interface
Shift Register
Slave Address Register ASEL Comparator
Start/Stop Logic
© 2001 Fairchild Semiconductor Corporation FM3540/60 Rev. C
1
www. fairchildsemi. com
FM3540/60 4/5 Bit M.
FM3540CMT14 Datasheet
