TCA8418RTWR datasheet(5/54 Pages) TI1

No. de pieza	TCA8418RTWR

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

6.5 Electrical Characteristics

over recommended operating free-air temperature range, VCC = 1.65 V to 3.6 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

VIK

Input diode clamp voltage

II = –18 mA

1.65 V to 3.6 V

–1.2

V

VPOR Power-on reset voltage, VCC

1.03

1.43

R

rising

VI = VCC or GND, IO = 0

1.65 V to 3.6 V

V

VPOR Power-on reset voltage, VCC

0.76

1.15

F

falling

IOH = –1 mA

1.65 V

1.25

1.65 V

1.2

IOH = –8 mA

2.3 V

1.8

ROW0–7, COL0–9 high-level

VOH

3 V

2.6

V

output voltage

1.65 V

1.1

IOH = –10 mA

2.3 V

1.7

3 V

2.5

IOL = 1 mA

1.65 V

0.4

1.65 V

0.45

IOL = 8 mA

2.3 V

0.25

ROW0–7, COL0–9 low-level

VOL

3 V

0.25

V

output voltage

1.65 V

0.6

IOL = 10 mA

2.3 V

0.3

3 V

0.25

SDA

VOL = 0.4 V

1.65 V to 3.6 V

3

IOL

mA

INT and CAD_INT

VOL = 0.4 V

1.65 V to 3.6 V

3

SCL, SDA, ROW0–7, COL0–9,

II

VI = VCCI or GND

1.65 V to 3.6 V

1

μA

RESET

RINT

Internal pull-up resistor value

ROW0–7, COL0–9

105

k

Ω

Oscillator

10

OFF

fSCL = 0 kHz

1.65 V to 3.6 V

Oscillator

18

ON

1.65 V

50

fSCL = 400 kHz

3.6 V

90

VI on SDA,

1 key press

1.65 V

65

ROW0–7,

fSCL = 1 MHz

COL0–9 = VCC or

3.6 V

153

ICC

Supply current

μA

GND,

fSCL = 400 kHz

GPI low

55

IO = 0, I/O =

(pull-up

inputs,

fSCL = 1 MHz

65

enable)(1)

fSCL = 400 kHz

GPI low

15

1.65 V to 3.6 V

(pull-up

fSCL = 1 MHz

24

disable)

fSCL = 400 kHz

55

1 GPO

active

fSCL = 1 MHz

65

CI

SCL

VI = VCCI or GND

1.65 V to 3.6 V

6

8

pF

SDA

10

12.5

Cio

VIO = VCC or GND

1.65 V to 3.6 V

pF

ROW0–7, COL0–9

5

6

(1)

Assumes that one GPIO is enabled.

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