TCA9554_15 Datasheet, PDF (3/38 Pages) Texas Instruments – TCA9554 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers

www.ti.com
5 Pin Configuration and Functions
PW, DB, OR DBQ PACKAGE
(TOP VIEW)
VCC
TCA9554
SCPS233D – MARCH 2012 – REVISED AUGUST 2015
PIN
NAME
NO.
A0
1
A1
2
A2
3
P0
4
P1
5
P2
6
P3
7
GND
8
P4
9
P5
10
P6
11
P7
12
INT
13
SCL
14
SDA
15
VCC
16
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
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
Copyright © 2012–2015, Texas Instruments Incorporated
Product Folder Links: TCA9554
Submit Documentation Feedback
3