TCA1116 Datasheet, PDF (1/12 Pages) Texas Instruments – LOW VOLTAGE 16-BIT I2C I/O EXPANDER WITH INTERRUPT AND RESET

TCA1116
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LOW VOLTAGE 16-BIT I²C I/O EXPANDER
WITH INTERRUPT AND RESET
Check for Samples: TCA1116
SCPS229 – SEPTEMBER 2011
FEATURES
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• I²C to Parallel Port Expander
• Supports partial power down i.e. SDA and SCL
are 5V tolerant (<1uA leakage) even when
Vcc=0
• Supports 1.8V I²C operation
• Open-Drain Active-Low Interrupt Output
• Active-Low Reset Input
• I/O Ports are 5V tolerant
• Low Standby-Current Consumption of
3 μA Max
• 400-kHz Fast I²C Bus support
• Polarity Inversion Register
• Configurable with up to four different I2C
addresses using hardware pins
• Directly drive LEDs using high current push
pull outputs
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 1000-V Charged-Device Model (C101)
PW PACKAGE
(TOP VIEW)
RTW PACKAGE
(TOP VIEW)
INT 1
A1 2
RESET 3
P00 4
P01 5
P02 6
P03 7
P04 8
P05 9
P06 10
P07 11
GND 12
24 V_CC
23 SDA
22 SCL
21 A0
20 P17
19 P16
18 P15
17 P14
16 P13
15 P12
14 P11
13 P10
24 23 22 21 20 19
P00 ¹
P01 ²
P02 ³
P03 ⁴
P04 ⁵
P05 ⁶
Exposed
Center
Pad
18 _A0
17 _P17
16 P16
15 P15
14 P14
13 _P13
7 8 9 10 11 12
The exposed center pad, if used, must be
connected as a secondary ground or left
electrically open.
DESCRIPTION
This 16-bit I/O expander for the two-line bidirectional bus (I²C) is designed for 1.65-V to 5.5-V V_CC operation. It
provides general-purpose remote I/O expansion for most microcontroller families via the I²C interface [serial clock
(SCL), serial data (SDA)]. Two hardware pins (A0 and A1) are used to program and vary the fixed I²C address
and allow up to four devices to share the same I²C bus. The TCA1116 consists of two 8-bit Configuration (input
or output selection), Input Port, Output Port, and Polarity Inversion (active-high or active-low operation) registers.
At power-on, the I/Os are configured as inputs. The system master can enable the I/Os as either inputs or
outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding
Input or output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register.
All registers can be read by the system master.
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated