MAX7316 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX7316

10-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection

Maxim Integrated 

10-Port I/O Expander with LED Intensity

Control, Interrupt, and Hot-Insertion Protection

Table 13. Master, O8 Intensity Register

REGISTER

MASTER AND GLOBAL INTENSITY

Write master and global intensity

Read back master and global intensity

Master intensity duty cycle is 0/15 (off);

internal oscillator is disabled;

all outputs will be static with no PWM

Master intensity duty cycle is 1/15

Master intensity duty cycle is 2/15

Master intensity duty cycle is 3/15

—

Master intensity duty cycle is 13/15

Master intensity duty cycle is 14/15

Master intensity duty cycle is 15/15 (full)

ADDRESS

CODE

R/W (HEX)

0

1

—

—

—

—

—

—

0X0E

—

—

REGISTER DATA

D7

D6

D5

D4

MSB

LSB

MASTER INTENSITY

D3

MSB

D2

D1

O8 INTENSITY

M3

M2

M1

M0

G3

G2

G1

0

0

0

0

—

—

—

0

0

0

1

—

—

—

0

0

1

0

—

—

—

0

0

1

1

—

—

—

—

—

—

—

—

—

—

1

1

0

1

—

—

—

1

1

1

0

—

—

—

1

1

1

1

—

—

—

D0

LSB

G0

—

—

—

—

—

—

—

—

O8 intensity duty cycle is 1/16

—

O8 intensity duty cycle is 2/16

—

O8 intensity duty cycle is 3/16

—

—

—

O8 intensity duty cycle is 14/16

—

O8 intensity duty cycle is 15/16

—

O8 intensity duty cycle is 16/16

(static output, no PWM)

—

—

—

—

—

0

0

0

0

—

—

—

—

0

0

0

1

—

—

—

—

0

0

1

0

—

—

—

—

—

—

—

—

—

—

—

—

1

1

0

1

—

—

—

—

1

1

1

0

—

—

—

—

1

1

1

1

The MAX7316 must be protected from the negative

voltage transient generated when switching off induc-

tive loads, such as relays, by connecting a reverse-

biased diode across the inductive load (Figure 19). The

peak current through the diode is the inductive load’s

operating current.

Power-Supply Considerations

The MAX7316 operates with a power-supply voltage of

2V to 3.6V. Bypass the power supply to GND with at

least 0.047µF as close to the device as possible. For

the QFN version, connect the underside exposed pad

to GND.

20 ______________________________________________________________________________________

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