Rainbow-electronics DS1340 Manual do Utilizador descarregar pdf (Página 5)

DS1340

2-Wire RTC with Trickle Charger

_____________________________________________________________________ 5

OUTPUTS

PF(MAX)

INPUTS

HIGH-Z

RST

DON'T CARE

VALID

RECOGNIZED

VALID

PF(MIN)

RST

RPU

Figure 2. Power-Up/Power-Down Timing

CCSA

vs. V

FT = 0

DS1340 toc01

(V)

SUPPLY CURRENT (µA)

5.04.54.03.53.02.52.01.5

100

150

200

250

1.0 5.5

100

125

150

CCS

vs. V

FT = 0

DS1340 toc02

(V)

SUPPLY CURRENT (µA)

5.04.54.03.53.02.52.01.51.0 5.5

-1.8V

-3.0V

-3.3V

BACKUP1

(FT = 0) vs. V

BACKUP

DS1340 toc03

450

500

550

600

650

700

750

800

850

400

BACKUP

(V)

SUPPLY CURRENT (nA)

5.04.54.03.53.02.52.01.51.0 5.5

Typical Operating Characteristics

= +3.3V, T

= +25°C, unless otherwise noted.)

BACKUP2

(FT = 1) vs. V

BACKUP

DS1340 toc04

450

500

550

600

650

700

750

800

850

400

BACKUP

(V)

SUPPLY CURRENT (nA)

5.04.54.03.53.02.52.01.51.0 5.5

FT vs. V

BACKUP

DS1340 toc06

BACKUP

(V)

FREQUENCY (Hz)

5.04.51.5 2.0 2.5 3.53.0 4.0

511.9965

511.9970

511.9975

511.9980

511.9985

511.9990

511.9995

512.0000

511.9960

1.0 5.5

BACKUP3

vs. TEMPERATURE

DS1340 toc05

TEMPERATURE (°C)

SUPPLY CURRENT (nA)

6040-20 0 20

500

550

600

650

700

750

800

850

-40 80

BACKUP

= 3.0V

1 2 3 4 5 6 7 8 9 10 11 12

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