Datasheet

MAX7315
8-Port I/O Expander with LED Intensity
Control, Interrupt, and Hot-Insertion Protection
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Table 15. MAX7311, PCA9535, and PCA9555 Register Compatibility
PCA9534,
PCA9554(A)
REGISTER
ADDRESS
MAX7313 IMPLEMENTATION
MAX7311, PCA9535,
PCA9555
IMPLEMENTATION
COMMENTS
Inputs 0x00 Inputs registers Implemented Same functionality
Outputs 0x01 Blink phase 0 registers Implemented Same functionality
Polarity inversion 0x02
Not implemented; register writes are
ignored; register reads return 0x00
Implemented;
power-up default is
0x00
If polarity inversion feature
is unused, MAX7313
defaults to correct state
Configuration 0x03 Ports configuration registers Not implemented Same functionality
No registers 0x0B Blink phase 1 registers Not implemented
No register 0x0E Master and global/O8 intensity register Not implemented
No register 0x0F Configuration register Not implemented
No registers
0x10–0x13
Outputs intensity registers Not implemented
Power-up default disables
the blink and intensity
(PWM) features
Figure 18. Diode-Protected Switching Inductive Load
MAX7315
P0
P1
P2
P3
P4
P5
P6
P7
V+
2V TO 3.6V
µC
SDA
SCL
SDA
I/O
AD0
SCL
GND
AD2
AD1
0.047µF
INT/O8
BAS16
5V
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
AD0

V+
SDA
SCL
P7
P6
P5
P4
TOP VIEW
MAX7315AEE
MAX7315AUE
QSOP/TSSOP
AD1
AD2
P2
P0
P1
P3
GND
INT/O8
Pin Configurations (continued)
MAX7315
P5
P0
P1
P2
P3
V+
3.3V
µC
SDA
SCL
SDA
I/O
AD0
5V 3.3V
P6
P7
SCL
P4
OUTPUT2
OUTPUT1
GND
5V
INPUT 1
INPUT 2
AD2
AD1
0.047µF
INT/O8
Typical Application Circuit