TCA8418EYFPR datasheet(7/54 Pages) TI1

No. de pieza	TCA8418EYFPR

Descripción Electrónicos	I2C Controlled Keypad Scan IC

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Fabricante Electrónico	TI1 [Texas Instruments]

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TCA8418

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SCPS215E – SEPTEMBER 2009 – REVISED NOVEMBER 2015

6.8 Switching Characteristics

STANDARD MODE,

FAST MODE, FAST

MODE PLUS (FM+)

PARAMETER

FROM

TO

UNIT

I2C BUS

MIN

MAX

Key event or Key

20

60

unlock or Overflow

GPI_INT with

ROW0–7,

tIV

Interrupt valid time

INT

40

120

μs

Debounce_DIS_Low

COL0–9

GPI_INT with

10

30

Debounce_DIS_High

tIR

Interrupt reset delay time

SCL

INT

200

ns

ROW0–7,

tPV

Output data valid

SCL

400

ns

COL0–9

tPS

Input data setup time

P port

SCL

0

ns

tPH

Input data hold time

P port

SCL

300

ns

6.9 Keypad Switching Characteristics

STANDARD MODE, FAST MODE, FAST

MODE PLUS (FM+)

PARAMETER

UNIT

I2C BUS

MIN

MAX

Key press to detection delay

25

μs

Key release to detection delay

25

μs

Keypad unlock timer

7

s

Keypad interrupt mask timer

31

s

Debounce

60

ms

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