TCA6416 Datasheet, PDF (23/31 Pages) Texas Instruments – LOW-VOLTAGE 16-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS

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TCA6416
LOW-VOLTAGE 16-BIT I²C AND SMBus I/O EXPANDER
WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
SCPS153 – DECEMBER 2007
APPLICATION INFORMATION
Figure 14 shows an application in which the TCA6416 can be used.
V_CCI
(1.8 V)
V_CC
SCL
Master
Controller SDA
INT
GND _RESET
V_CCI V_CCP
10 kW (x 7)
10 kW 10 kW 10 kW
2
24
10 kW
V_CCI
22
SCL
V_CCP
P00
4
23
SDA
1
INT
3
RESET
P01 ⁵
P02 ⁶
P03 ⁷
P04 ⁸
TCA6416 P05 ⁹
P06 ¹⁰
P07 ¹¹
P10 ¹³
P11 ¹⁴
P12 ¹⁵
21 _ADDR
P13 ¹⁶
P14 ¹⁷
P15 ¹⁸
P16 ¹⁹
P17 ²⁰
GND
12
ALARM
(See Note E)
Subsystem 1
(e.g., Alarm)
A
ENABLE
B
Keypad
A. Device address configured as 0100000 for this example.
B. P00 and P02–P10 are configured as inputs.
C. P01 and P11–P17 are configured as outputs.
D. Pin numbers shown are for the PW package.
E. Resistors are required for inputs (on P port) that may float. If a driver to an input will never let the input float, a resistor
is not needed. Outputs (in the P port) do not need pullup resistors.
Figure 14. Typical Application
Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): TCA6416
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