Rainbow-electronics DS1374 Manual de usuario descargar pdf (Pagina 3)

DS1374

C, 32-Bit Binary Counter Watchdog RTC with

Trickle Charger and Reset Input/Output

_____________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS

= V

CC MIN

to V

CC MAX

, T

= -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

R1 (Note 5)

250

R2 (Note 6)

2000

Trickle-Charge Current-Limiting

Resistors

R3 (Note 7)

4000

Ω

Input Leakage I

(Note 8) -1 +1

I/O Leakage I

(Note 9) -1 +1

RST Pin I/O Leakage I

LORST

(Note 10)

-200

µA

SDA Logic 0 Output (V

= 0.4V)

OLSDA

3.0 mA

> 2V; V

= 0.4V 3.0

1.71V < V

< 2V; V

= 0.2 V

3.0

RST, SQW, and INT Logic 0

Outputs (Note 11)

OL1

1.3V < V

< 1.71V; V

= 0.2 V

250 µA

DS1374-18 75 150

DS1374-3

110

200

Active Supply Current

(Notes 11, 12)

CCA

DS1374-33

180

300

µA

DS1374-18 60 100

DS1374-3 80 125

Standby Current (Notes 11, 13) I

CCS

DS1374-33

115

175

µA

BACKUP

Leakage Current

BACKUP

= 3.7V)

BACKUPLKG

100 nA

DC ELECTRICAL CHARACTERISTICS

= 0V, V

BACKUP

= 3.7V, T

= -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MAX TYP MAX

UNITS

BACKUP

Current (OSC ON);

SQW OFF

BKOSC1

(Note 14)

400

700 nA

BACKUP

Current (OSC ON);

SQW ON (32kHz)

BKOSC2

(Notes 14, 15)

600 1000

BACKUP

Data-Retention Current

(OSC OFF)

BACKUPDR

25 100 nA

1 2 3 4 5 6 7 8 ... 14 15

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Rainbow-electronics DS1374 Manual de usuario Pagina 3

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