TCA9534_16 Datasheet, PDF (3/38 Pages) Texas Instruments – Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander with Interrupt Output and Configuration Registers

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5 Pin Configuration and Functions
TCA9534
SCPS197B – SEPTEMBER 2014 – REVISED NOVEMBER 2016
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PIN
NAME
A0
A1
A2
P0
P1
P2
P3
GND
P4
P5
P6
P7
INT
SCL
SDA
VCC
PW, DW Package
16-Pin TSSOP, SOIC
Top View
A0 1
A1 2
A2 3
P0 4
P1 5
P2 6
P3 7
GND 8
16 _VCC
15 _SDA
14 _SCL
13 _INT
12 _P7
11 _P6
10 _P5
9 _P4
Pin Functions
I/O
DESCRIPTION
I
Address input. Connect directly to V_CC or ground
I
Address input. Connect directly to V_CC or ground
I
Address input. Connect directly to V_CC or ground
I/O
P-port input-output. Push-pull design structure. At power on, P0 is
configured as an input
I/O
P-port input-output. Push-pull design structure. At power on, P1 is
configured as an input
I/O
P-port input-output. Push-pull design structure. At power on, P2 is
configured as an input
I/O
P-port input-output. Push-pull design structure. At power on, P3 is
configured as an input
—
Ground
I/O
P-port input-output. Push-pull design structure. At power on, P4 is
configured as an input
I/O
P-port input-output. Push-pull design structure. At power on, P5 is
configured as an input
I/O
P-port input-output. Push-pull design structure. At power on, P6 is
configured as an input
I/O
P-port input-output. Push-pull design structure. At power on, P7 is
configured as an input
O
Interrupt output. Connect to V_CC through a pull-up resistor
I/O
Serial clock bus. Connect to V_CC through a pull-up resistor
I/O
Serial data bus. Connect to V_CC through a pull-up resistor
—
Supply voltage
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