MAX7315 Ver la hoja de datos (PDF) - Maxim Integrated
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Fabricante
MAX7315
Maxim Integrated
MAX7315 Datasheet PDF : 26 Pages
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8-Port I/O Expander with LED Intensity
Control, Interrupt, and Hot-Insertion Protection
Table 3. Power-Up Configuration
REGISTER FUNCTION
POWER-UP CONDITION
Blink phase 0 outputs P7–P0
Ports configuration P7–P0
Blink phase 1 outputs P7–P0
Master, O8 intensity
Configuration
Outputs intensity P1, P0
Outputs Intensity P3, P2
Outputs intensity P5, P4
Outputs intensity P7, P6
High-impedance outputs
Ports P7–P0 are inputs
High-impedance outputs
PWM oscillator is disabled;
O8 is static logic output
INT/O8 is interrupt output;
blink is disabled;
global intensity is enabled
P1, P0 are static logic outputs
P3, P2 are static logic outputs
P5, P4 are static logic outputs
P7, P6 are static logic outputs
ADDRESS
CODE
REGISTER DATA
(HEX)
D7 D6 D5 D4 D3 D2 D1 D0
0x01
11111111
0x03
11111111
0x09
11111111
0x0E
00001111
0x0F
0x10
0x11
0x12
0x13
00001100
11111111
11111111
11111111
11111111
Table 4. Configuration Register
REGISTER
ADDRESS
CODE
REGISTER DATA
(HEX)
D7
D6
D5
D4
D3
D2
D1
D0
R/W
CONFIGURATION
Write device configuration
Read-back device configuration
Disable blink
Enable blink
Flip blink register (see text)
0
INT
X
O1
O0
I
G
B
E
1
O
—
X
X
X
X
X
X
X
0
—
X
X
X
X
X
X
X
1
—
0x0F
X
X
X
X
X
X
0
1
—
X
X
X
X
X
X
1
1
Disable global intensity control—intensity
is set by registers 0x10–0x13 for ports P0
through P7 when configured as outputs,
and by D3–D7 of register 0x0E for INT/O8 —
when INT/O8 pin is configured as an
output port
X
X
X
X
X
0
X
X
Enable global intensity control—intensity
for all ports configured as outputs is set —
by D3–D0 of register 0x0E
X = Don’t care.
X
X
X
X
X
1
X
X
14 ______________________________________________________________________________________
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