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CAP1128 Datasheet(PDF) 6 Page - Microchip Technology

Part # CAP1128
Description  8 Channel Capacitive Touch Sensor with 2 LED Drivers
PDF  75 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

CAP1128 Datasheet(HTML) 6 Page - Microchip Technology

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CAP1128
DS00001622B-page 6
 2015 Microchip Technology Inc.
3
SMDATA /
SPI_MSIO /
SPI_MISO
SMDATA - Bi-directional, open-drain SMBus data -
requires pull-up resistor
DIOD (5V)
n/a
SPI_MSIO - SPI Master-Slave-In-Out bidirectional port
when used in bi-directional mode
DIO
SPI_MISO - SPI Master-In-Slave-Out port when used in
normal mode
DO
4
SMCLK / SPI_-
CLK
SMCLK - SMBus clock input - requires pull-up resistor
DI (5V)
n/a
SPI_CLK - SPI clock input
DI (5V)
5
N/C
Not Internally Connected
n/a
Connect to
Ground
6LED1
Open drain LED 1 driver (default)
OD (5V)
Connect to
Ground
Push-pull LED 1 driver
DO
leave open or
connect to
Ground
7LED2
Open drain LED 2 driver (default)
OD (5V)
Connect to
Ground
Push-pull LED 2 driver
DO
leave open or
connect to
Ground
8
N/C
Not Internally Connected
n/a
Connect to
Ground
9
RESET
Active high soft reset for system - resets all registers to
default values. If not used, connect to ground.
DI (5V)
Connect to
Ground
10
ALERT#
ALERT# - Active low alert / interrupt output for SMBus
alert or SPI interrupt
OD (5V)
Connect to
Ground
ALERT# - Active high push-pull alert / interrupt output
for SMBus alert or SPI interrupt
DO
leave open
11
ADDR_COMM
Address / communications select pin - pull-down resis-
tor determines address / communications mechanism
AI
n/a
12
CS8
Capacitive Touch Sensor Input 8
AIO
Connect to
Ground
13
CS7
Capacitive Touch Sensor Input 7
AIO
Connect to
Ground
14
CS6
Capacitive Touch Sensor Input 6
AIO
Connect to
Ground
15
CS5
Capacitive Touch Sensor Input 5
AIO
Connect to
Ground
16
CS4
Capacitive Touch Sensor Input 4
AIO
Connect to
Ground
TABLE 2-1:
PIN DESCRIPTION FOR CAP1128 (CONTINUED)
Pin
Number
Pin Name
Pin Function
Pin Type
Unused
Connection



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