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CAP1214 Datasheet(PDF) 15 Page - Microchip Technology

Part # CAP1214
Description  Multiple Channel Capacitive Touch Sensor and LED Driver
PDF  107 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

CAP1214 Datasheet(HTML) 15 Page - Microchip Technology

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Multiple Channel Capacitive Touch Sensor and LED Driver
Datasheet
SMSC CAP1214
15
Revision 1.0 (08-30-10)
DATASHEET
Time to
Communications
tCOMM
15
20
ms
Time from power applied to
communications active
Time to First
Conversion
tCONV
100
200
ms
Time from power applied to first
sensor sampled
Time to First Valid
Detection
tCONV
675
775
ms
Time from power applied to first
valid data
Capacitive Touch Sensor
Base Capacitance
CBASE
5
50
pF
Pad untouched
Detectable
Capacitive Shift
ΔC
TOUCH
0.1
2
pF
Pad touched
Sample Time
tTOUCH
2.5
ms
Update Time
Δt
TOUCH
35
ms
Recalibration Interval
Δt
CAL
8s
Automatic Recalibration active,
no touch active, default settings
Power Supply
Rejection
PSR
±310
counts
/ V
LED / GPIO Drivers (LED / GPIO 1 - 8)
Duty Cycle
DUTYLED
0
100
%
Programmable
Drive Frequency
fLED
2kHz
Sinking Current
ISINK
24
mA
VOL = 0.4
Sourcing Current
ISOURCE
24
mA
VOH = VDD - 0.4
Input High Voltage
VIH
2.0
V
LED / GPIO configured as input
Input Low Voltage
VIL
0.8
V
LED / GPIO configured as input
LED Drivers (LED 9 - LED 10)
Duty Cycle
DUTYLED
0
100
%
Programmable
Drive Frequency
fLED
2kHz
Sinking Current
ISINK
24
mA
Output Low Voltage
VOL
0.4
V
ISINK = 24mA
LED11 Driver
Duty Cycle
DUTYLED
0
100
%
Programmable
Drive Frequency
fLED
2
kHz
Programmable
Sinking Current
ISINK
48
mA
Output Low Voltage
VOL
0.4
V
ISINK = 48mA
Table 3.2 Electrical Specifications (continued)
VDD = 3V to 3.6V, TA = 0°C to 85°C, all Typical values at TA = 27°C unless otherwise noted.
CHARACTERISTIC
SYMBOL
MIN
TYP
MAX
UNIT
CONDITIONS



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