TCA9555 Datasheet, PDF (3/32 Pages) Texas Instruments – LOW VOLTAGE 16-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS

TCA9555
www.ti.com .............................................................................................................................................................. SCPS200A – JULY 2009 – REVISED JULY 2009
NO.
TSSOP (PW)
QFN (RTW)
1
22
2
23
3
24
4
1
5
2
6
3
7
4
8
5
9
6
10
7
11
8
12
9
13
10
14
11
15
12
16
13
17
14
18
15
19
16
20
17
21
18
22
19
23
20
24
21
TERMINAL FUNCTIONS
NAME
INT
A1
A2
P00
P01
P02
P03
P04
P05
P06
P07
GND
P10
P11
P12
P13
P14
P15
P16
P17
A0
SCL
SDA
V_CC
DESCRIPTION
Interrupt output. Connect to V_CC through a pullup resistor.
Address input 1. Connect directly to V_CC or ground.
Address input 2. Connect directly to V_CC or ground.
P-port input/output. Push-pull design structure. At power on, P00 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P01 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P02 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P03 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P04 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P05 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P06 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P07 is
configured as an input.
Ground
P-port input/output. Push-pull design structure. At power on, P10 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P11 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P12 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P13 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P14 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P15 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P16 is
configured as an input.
P-port input/output. Push-pull design structure. At power on, P17 is
configured as an input.
Address input 0. Connect directly to V_CC or ground.
Serial clock bus. Connect to V_CC through a pullup resistor.
Serial data bus. Connect to V_CC through a pullup resistor.
Supply voltage
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): TCA9555
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