FM3560M20X

FM3560M20X Datasheet

FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches

Part	Datasheet
FM3560M20X	FM3560M20X (pdf)

PDF Datasheet Preview
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 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 of the internal nonvolatile registers is output to the Y-port. The FM3540/60 is fabricated with an advanced CMOS technology to achieve high density and low power. 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] SOPRA SOPRB IIC Read Logic Mux3 SDA SCL IIC Interface Start/Stop Logic Shift Register Mux2 MXSB, MXSA Y[4:0] Mux1 Control Logic MUXSEL OVRD Slave Address Register Comparator ASEL 2001 Fairchild Semiconductor Corporation FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches Ordering Information Order Number FM3540CM14 FM3540CMT14 FM3540SM14 FM3540SMT14 FM3560M20 FM3560MT20 Package Number M14A MTC14 M14A MTC14 M20B MTC20 Package Description 14-Pin SO 14-Pin TSSOP 14-Pin SO 14-Pin TSSOP 20-Pin SO 20-Pin TSSOP Packing T&R T&R T&R T&R T&R T&R Y-Port Output Type Open-Collector Open-Collector Fixed 2.5V Fixed 2.5V See Note below See Note below Device Address 1001110 See Note below See Note below Note About Y-Port Output Type FM3560 device has a dedicated input pin LEVEL to select either "Fixed 2.5Volts" or "Open-Collector" Y-Port output type. Note About Device Address For FM3540 with an alternate device address of 0110111, contact Fairchild Marketing/Sales. FM3560 device has a dedicated input pin ASEL to select either "1001110" or 0110111" as device address. Pin Connection Diagrams 14-Pin Packages FM3540 20-Pin Packages FM3560 OVRD Level ASEL Non_Mux_Out MUXSEL Pin Description Pin Name I[0:4] Y[0:4] SCL Override# WP Non_Mux_Out Mux_Sel Level ASEL SDA Data Inputs w/Pullups 10K-40K O/D Data Outputs Serial Port Clock Input 120K pullup Override Input, sets all outputs to 0 Write Protect Input Non-Multiplexed Output Mux. Select Input Level Select Input Address Select Input Serial Port Data I/O 120K pullup FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches Functional Description The FM3540/60 has two primary functional modes of operation and an additional mode for programming the device. Operational Modes During standard operation the device will either pass an address to the Y-Port from the I-Port or from an internally programmed value. At power up the device will default to passing the I-Port value to the Y-Port. The I-port values are generated from the motherboard of the system and may be hardwired or driven by another device. Pullup resistors are provided on the device to accommodate this device being driven by open drain output drivers. The device expects standard CMOS input signals. The level of the output signal is determined by the Level input. If this input is connected to Vss/Ground, the output is at 2.5V on the multiplexed outputs Y0-Y4 . The non-multiplexed output is always at CMOS levels. The Level input, if left unconnected it has an internal pullup , will cause the Y0-Y4 outputs to operate as open-drain outputs. The override# input, when set to 0, will cause all the outputs to be set to The WP signal, if set to logic 1, will prevent data from being written to the non-volatile register. The mux_sel input, when set to logic 0, will select the data from the non-volatile register to drive on the Y0-4 outputs. If set to logic 1, the data from the inputs are selected instead. The non_mux_out latch is transparent when the mux_sel signal is at logic 0, and will latch data when the mux_select is in a logic 1 state. Output Port Y0-Y4 The output port is an open drain output to allow for easy connection to devices running at different voltage levels. The port is always active and either passes the value on the I-Port or the value in the Serial output port Register SOPR . Changing the Mux Path is accomplished by writing to b7, b6 of the Serial Input Port Register. SOPR-b7, b6 defaults to a value of "10" at power up and the default path is from the I-Port through to the output port. The multiplexer only updates when an IIC stop condition is observed. Register Description The FM3540/60 has 3 registers in total. These registers are made up of a combination of read only, write only and read write bits. The two registers are listed below. Serial Output Port Register A SOPRA Address 00H - A read/ write register that contains the new value to be written to output Port-Y and the multiplexer select bit.

PDF Datasheet Preview

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

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 of the internal nonvolatile registers is output to the Y-port. The FM3540/60 is fabricated with an advanced CMOS technology to achieve high density and low power.

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] SOPRA

SOPRB

IIC Read Logic

Mux3

SDA SCL

IIC Interface

Start/Stop Logic

Shift Register

Mux2

MXSB, MXSA

Y[4:0] Mux1

Control Logic

MUXSEL OVRD

Slave Address Register

Comparator

ASEL
2001 Fairchild Semiconductor Corporation

FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches
Ordering Information

Order Number

FM3540CM14 FM3540CMT14 FM3540SM14 FM3540SMT14 FM3560M20 FM3560MT20

Package Number

M14A MTC14 M14A MTC14 M20B MTC20

Package Description
14-Pin SO 14-Pin TSSOP
14-Pin SO 14-Pin TSSOP
20-Pin SO 20-Pin TSSOP

Packing

T&R T&R T&R T&R T&R T&R

Y-Port Output Type

Open-Collector Open-Collector

Fixed 2.5V Fixed 2.5V See Note below See Note below

Device Address
1001110 See Note below See Note below

Note About Y-Port Output Type FM3560 device has a dedicated input pin LEVEL to select either "Fixed 2.5Volts" or "Open-Collector" Y-Port output type. Note About Device Address For FM3540 with an alternate device address of 0110111, contact Fairchild Marketing/Sales. FM3560 device has a dedicated input pin ASEL to select either "1001110" or 0110111" as device address.

Pin Connection Diagrams
14-Pin Packages FM3540
20-Pin Packages FM3560

OVRD

Level

ASEL

Non_Mux_Out

MUXSEL

Pin Description

Pin Name

I[0:4] Y[0:4] SCL Override# WP Non_Mux_Out Mux_Sel Level ASEL SDA

Data Inputs w/Pullups 10K-40K O/D Data Outputs Serial Port Clock Input 120K pullup Override Input, sets all outputs to 0 Write Protect Input Non-Multiplexed Output Mux. Select Input Level Select Input Address Select Input Serial Port Data I/O 120K pullup

FM3540/60 4/5 Bit Multiplexed, 1 Bit Latched Port with Standard 2-Wire Bus Interface and Non-Volatile Latches

Functional Description

The FM3540/60 has two primary functional modes of operation and an additional mode for programming the device.

Operational Modes

During standard operation the device will either pass an address to the Y-Port from the I-Port or from an internally programmed value. At power up the device will default to passing the I-Port value to the Y-Port.

The I-port values are generated from the motherboard of the system and may be hardwired or driven by another device. Pullup resistors are provided on the device to accommodate this device being driven by open drain output drivers. The device expects standard CMOS input signals. The level of the output signal is determined by the Level input. If this input is connected to Vss/Ground, the output is at 2.5V on the multiplexed outputs Y0-Y4 . The non-multiplexed output is always at CMOS levels. The Level input, if left unconnected it has an internal pullup , will cause the Y0-Y4 outputs to operate as open-drain outputs. The override# input, when set to 0, will cause all the outputs to be set to The WP signal, if set to logic 1, will prevent data from being written to the non-volatile register.

The mux_sel input, when set to logic 0, will select the data from the non-volatile register to drive on the Y0-4 outputs. If set to logic 1, the data from the inputs are selected instead. The non_mux_out latch is transparent when the mux_sel signal is at logic 0, and will latch data when the mux_select is in a logic 1 state.

Output Port Y0-Y4

The output port is an open drain output to allow for easy connection to devices running at different voltage levels. The port is always active and either passes the value on the I-Port or the value in the Serial output port Register SOPR . Changing the Mux Path is accomplished by writing to b7, b6 of the Serial Input Port Register. SOPR-b7, b6 defaults to a value of "10" at power up and the default path is from the I-Port through to the output port. The multiplexer only updates when an IIC stop condition is observed.

Register Description

The FM3540/60 has 3 registers in total. These registers are made up of a combination of read only, write only and read write bits. The two registers are listed below.

Serial Output Port Register A SOPRA Address 00H - A read/ write register that contains the new value to be written to output Port-Y and the multiplexer select bit.

More datasheets: M39140 SL001 | M39140 SL005 | M39140 SL002 | APE12M05 | 2683 | 882250 SL001 | 882250 SL005 | 882250 SL002 | HMC543LC4B | S560-6600-EZ-F

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived FM3560M20X Datasheet file may be downloaded here without warranties.

Datasheet ID: FM3560M20X 514874