Rainbow-electronics MAX7359 Bedienungsanleitung PDF herunterladen (Seite 2)

MAX7359

2-Wire Interfaced Low-EMI

Key Switch Controller/GPO

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

(All voltages referenced to GND.)

..........................................................................-0.3V to +4V

COL2/PORT2–COL7/PORT7 ....................................-0.3V to +4V

SDA, SCL, AD0, INT .................................................-0.3V to +6V

All Other Pins..............................................-0.3V to (V

+ 0.3V)

DC Current on COL2/PORT2–COL7/PORT7 ......................25mA

GND Current .......................................................................80mA

Continuous Power Dissipation (T

= +70°C)

24-Pin TQFN (derate 15.4mW/°C above +70°C)..........1229mW

Operating Temperature Range (T

MIN

to T

MAX

) .....-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

= 1.62V to 3.6V, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V

= 2.5V, T

= +25°C.) (Notes 1, 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Operating Supply Voltage V

1.62 3.60 V

All key switches open, oscillator running,

COL2–COL7 configured as key switches

25 60

Operating Supply Current I

N keys pressed

(25 +

20 x N)

µA

Sleep-Mode Supply Current I

0.6 5 µA

POR 1.0 1.6 V

POR Hysteresis PORHYST V

rising 42 mV

Key-Switch Source Current I

KEY

20 35 µA

Key-Switch Source Voltage V

KEY

Operating mode 0.42 0.55 V

Key-Switch Resistance R

KEY

(Note 3) 5 kΩ

Startup Time from Shutdown t

START

2000 2400 µs

Output Low Voltage

COL2/PORT2 to COL7/PORT7

OLPORT

SINK

= 10mA 0.2 V

INT Output V

OLINT

SINK

= 10mA 0.5 V

Oscillator Frequency F

OSC

64 kHz

SERIAL-INTERFACE SPECIFICATIONS

Serial Bus Timeout t

OUT

With bus timeout enabled 10 40 ms

Input High Voltage

SDA, SCL, AD0

0.7 x

Input Low Voltage

SDA, SCL, AD0

0.3 x

Output Low Voltage SDA V

OLPORT

SINK

= 10mA 0.4 V

Input Leakage Current V

= 0 to 6V -1 +1 µA

1 2 3 4 5 6 7 ... 21 22

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