MAX7315 Maxim, MAX7315 Datasheet - Page 14

• Manufacturer Part Number: MAX7315
• Description: The MAX7315 I²C-/SMBus™-compatible serial interfaced peripheral provides microprocessors with 8 I/O ports
• Manufacturer: Maxim

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