Rainbow-electronics MAX7313 Manual do Utilizador Página 1

General DescriptionThe MAX7313 I2C™-compatible serial interfacedperipheral provides microprocessors with 16 I/O ports.Each I/O port can be individuall

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt10 ________________________________________________________________________________

Any bytes received after the command byte are databytes. The first data byte goes into the internal registerof the MAX7313 selected by the command byt

MAX7313Command Address AutoincrementingThe command address stored in the MAX7313 circu-lates around grouped register functions after each databyte is

Ports ConfigurationThe 16 I/O ports P0 through P15 can be configured toany combination of inputs and outputs using the portsconfiguration registers (T

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt14 ________________________________________________________________________________

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt___________________________________________________________________________________

MAX7313Set the interrupt enable I bit in the configuration registerto configure INT/O16 as the INT output (Table 4). Clearinterrupt enable to configur

Blink Phase RegistersWhen the blink function is disabled, the two blink phase0 registers set the logic levels of the 16 ports (P0through P15) when con

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt18 ________________________________________________________________________________

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt___________________________________________________________________________________

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt2 _________________________________________________________________________________

MAX7313Using PWM Intensity Controls with Blink DisabledWhen blink is disabled (Table 7), the blink phase 0 reg-isters specify each output’s logic leve

Applications InformationOutput Level TranslationThe open-drain output architecture allows the ports tolevel translate the outputs to higher or lower v

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt22 ________________________________________________________________________________

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt___________________________________________________________________________________

MAX7313where:RLEDis the resistance of the resistor in series with theLED (Ω).VSUPPLYis the supply voltage used to drive the LED (V).VLEDis the forward

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt___________________________________________________________________________________

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt26 ________________________________________________________________________________

MAX731316-Port I/O Expander with LED IntensityControl and InterruptMaxim cannot assume responsibility for use of any circuitry other than circuitry en

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt___________________________________________________________________________________

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt4 _________________________________________________________________________________

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt___________________________________________________________________________________

MAX7313Functional OverviewThe MAX7313 is a general-purpose input/output (GPIO)peripheral that provides 16 I/O ports, P0–P15, con-trolled through an I2

as an input or an output. Reading an input ports regis-ter latches the current-input logic level of the affectedeight ports. Transition detection allo

MAX7313only as an input. A pullup resistor, typically 4.7kΩ, isrequired on SCL if there are multiple masters on the 2-wire interface, or if the master

MAX731316-Port I/O Expander with LED IntensityControl and Interrupt___________________________________________________________________________________