MAX7313ATG-T Maxim Integrated, MAX7313ATG-T Datasheet - Page 21

• Manufacturer Part Number: MAX7313ATG-T
• Description: Interface - I/O Expanders 16-Bit I/O Port Expander
• Manufacturer: Maxim Integrated
• Series: MAX7313r

Specifications of MAX7313ATG-T

• Maximum Operating Frequency: 400 KHz
• Operating Supply Voltage: 2 V to 3.6 V
• Operating Temperature Range: - 40 C to + 125 C
• Mounting Style: SMD/SMT
• Package / Case: TQFN-24 EP
• Output Current: 50 mA
• Power Dissipation: 761 mW

Table 13. Master, O16 Intensity Register
The MAX7313 is pin compatible and software compatible
with the standard register structure used by MAX7311,
PCA9535, and PCA9555. However, some MAX7311 func-
tions are not implemented in the MAX7313, and the
MAX7313’s PWM and blink functionality is not supported
in the MAX7311. Software compatibility is clearly not
100%, but the MAX7313 was designed so the subset
(omitted) features default to the same power-up behavior
as the MAX7311, PCA9535, and PCA9555, and superset
features do not use existing registers in a different way. In
practice, many applications can use the MAX7313 as a
drop-in replacement for the MAX7311.
When driving LEDs, a resistor in series with the LED
must be used to limit the LED current to no more than
______________________________________________________________________________________________________
Control, Interrupt, and Hot-Insertion Protection
Master intensity duty cycle is 15/15 (full)
Master intensity duty cycle is 0/15 (off);
Read back master and global intensity
MASTER AND GLOBAL INTENSITY
all outputs will be static with no PWM
Master intensity duty cycle is 13/15
Master intensity duty cycle is 14/15
Master intensity duty cycle is 1/15
Master intensity duty cycle is 2/15
Master intensity duty cycle is 3/15
Write master and global intensity
O16 intensity duty cycle is 14/16
O16 intensity duty cycle is 15/16
O16 intensity duty cycle is 16/16
internal oscillator is disabled;
O16 intensity duty cycle is 1/16
O16 intensity duty cycle is 2/16
O16 intensity duty cycle is 3/16
(static output, no PWM)
REGISTER
—
—
Compatibility with MAX7311
16-Port I/O Expander with LED Intensity
Driving LED Loads
R/W
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0
1
ADDRESS
CODE
(HEX)
0X0E
MSB
M3
D7
—
—
—
—
—
—
—
—
0
0
0
0
1
1
1
50mA. Choose the resistor value according to the fol-
lowing formula:
where:
R
LED (Ω).
V
V
V
sinking I
I
For example, to operate a 2.2V red LED at 14mA from a
5V supply, R
MASTER INTENSITY
LED
SUPPLY
LED
OL
LED
M2
is the desired operating current of the LED (A).
D6
is the output low voltage of the MAX7313 when
—
—
—
—
—
—
—
—
0
0
0
0
1
1
1
is the forward voltage of the LED (V).
is the resistance of the resistor in series with the
LED
R
is the supply voltage used to drive the LED (V).
LED
M1
D5
(V).
LED
—
—
—
—
—
—
—
—
0
0
1
1
0
1
1
= (V
= (5 - 2.2 - 0.25) / 0.014 = 182Ω.
REGISTER DATA
SUPPLY
LSB
M0
D4
—
—
—
—
—
—
—
—
0
1
0
1
1
0
1
MSB
- V
D3
G3
—
—
—
—
—
—
—
—
—
0
0
0
1
1
1
LED
O16 INTENSITY
- V
D2
G2
—
—
—
—
—
—
—
—
—
0
0
0
1
1
1
OL
) / I
LED
D1
G1
—
—
—
—
—
—
—
—
—
0
0
1
0
1
1
LSB
D0
G0
—
—
—
—
—
—
—
—
—
0
1
0
1
0
1
21