DS1343E-33 Ver la hoja de datos (PDF) - Maxim Integrated

Número de pieza

componentes Descripción

Fabricante

DS1343E-33

Low-Current SPI/3-Wire RTCs

Maxim Integrated 

DS1343/DS1344

Low-Current SPI/3-Wire RTCs

AC ELECTRICAL CHARACTERISTICS (continued)

(VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C, unless otherwise noted.) (Notes 2, 3)

SCLK Rise and Fall

CE to SCLK Setup

SCLK to CE Hold

CE Inactive Time

CE to Output High-Z

Oscillator Stop Flag (OSF) Delay

tR, tF

tCC

tCCH

tCWH

tCDZ

tOSF

-18

-3 or -33

(Note 9)

POWER-UP/DOWN CHARACTERISTICS

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

PARAMETER

Recovery at Power-Up

VCC Fall Time (VPF to 0V)

VCC Rise Time (0V to VPF)

SYMBOL

tREC

tVCCF

tVCCR

CONDITIONS

200

ns

400

ns

100

ns

500

ns

400

80

ns

25

100

ms

MIN TYP MAX UNITS

20

40

ms

150

Fs

0

Fs

CAPACITANCE

(TA = +25°C, unless otherwise noted.)

PARAMETER

Input Capacitance

Output Capacitance

SYMBOL

CI

CO

(Note 10)

(Note 10)

CONDITIONS

MIN TYP MAX UNITS

10

pF

15

pF

CRYSTAL PARAMETERS

PARAMETER

Nominal Frequency

Series Resistance

Load Capacitance

SYMBOL

fO

ESR

CL

DS1343

DS1344

CONDITIONS

MIN TYP

32.768

6

12.5

Note 2: Voltage referenced to ground.

Note 3: Limits at TA = -40°C are guaranteed by design and not production tested.

Note 4: CE = VCC, VSCLK = VCC to GND, IOUT = 0mA, trickle charger disabled.

Note 5: CE = GND, IOUT = 0mA, EOSC = EGFIL = DOSF = 0, trickle charger disabled.

Note 6: VCC = 0V, EGFIL = 0, DOSF = 1.

Note 7: VCC = 0V, EGFIL = 1, DOSF = 0.

Note 8: Applies to INT0 and INT1.

Note 9: The parameter tOSF is the period of time the oscillator must be stopped for the OSF flag to be set.

Note 10: Guaranteed by design; not 100% production tested.

MAX

100

UNITS

kHz

kI

pF

4  

Maxim Integrated

Share Link: