CAP1214 datasheet(16/107 Pages) MICROCHIP

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Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

Revision 1.0 (08-30-10)

SMSC CAP1214

DATASHEET

I/O Pins - SMDATA, SMCLK, and ALERT Pins

Output Low Voltage

VOL

0.4

ISINK_IO = 8mA

Output High Voltage

VOH

VDD -

0.4

ALERT pin active high and

asserted

ISOURCE_IO = 8mA

Input High Voltage

VIH

2.0

Input Low Voltage

VIL

0.8

Leakage Current

ILEAK

±5

powered or unpowered

TA < 85°C

pull-up voltage < VDD

FEEDBACK Pin

Output Low Voltage

VOL

0.4

ISINK_IO = 24mA

Output High Voltage

VOH

VDD -

0.4

VISOURCE_IO = 24mA

RESET Pin

Input High Voltage

VIH

2.0

Input Low Voltage

VIL

0.8

RESET Filter Time

tRST_FILT

RESET Pin release

to fully active

operation

tRST_ON

675

775

SMBus Timing

Input Capacitance

CIN

5pF

Clock Frequency

fSMB

400

kHz

Spike Suppression

tSP

Bus free time Start to

Stop

tBUF

1.3

Hold Time: Start

tHD:STA

0.6

Setup Time: Start

tSU:STA

0.6

Setup Time: Stop

tSU:STO

0.6

Data Hold Time

tHD:DAT

0us

Data Setup Time

tSU:DAT

0.6

Clock Low Period

tLOW

1.3

Clock High Period

tHIGH

0.6

Clock/Data Fall time

tFALL

300

Min = 20+0.1CLOAD ns

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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