SM8580 datasheet(6/23 Pages) NPC

Part #	SM8580

Description	Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor

PDF	23 Pages

Scroll/Zoom	100%

Manufacturer	NPC [Nippon Precision Circuits Inc]

Direct Link	http://www.npc.co.jp/en

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6 / 23 page

SM8580AM

NIPPON PRECISION CIRCUITS—6

Terminal Capacitance Characteristics

Ta = 25

°C, f = 1MHz

Oscillator Characteristics

Ta = 25°C, Seiko Epson C-002SH crystal (CI = 30kΩ, CL = 10pF) unless otherwise noted

AC Characteristics (1)

VSS = 0V, Ta = −40 to 85°C unless otherwise noted

P arameter

Symbol

Condition

Rating

Unit

min

typ

m a x

Address input capacitance

C ADD

A0 to A3

–

p F

Data output capacitance

C DATA

D0 to D3

–

1 5

p F

P arameter

Symbol

Condition

Rating

Unit

min

typ

m a x

Oscillator start time

tSTA

V DD = 1.6 V

–

3.0

Oscillator stop voltage

V STO

–

1.5

Frequency voltage characteristic

f/V

V DD = 1.6 to 5.5V

−2

–

ppm/V

Frequency accuracy

V DD = 3.0V

−20

–

+20

p p m

Input capacitance

C G

V DD = 3.0V

–

1 5

–

p F

Output capacitance

C D

V DD = 3.0V

–

1 0

–

p F

P arameter

Symbol

Condition

Rating

Unit

min

m a x

min

FOUT duty

Duty

V DD = 5V ± 10%

4 0

–

6 0

V DD = 3V ± 10%

4 0

–

6 0

Oscillator failure detection time

tOSC

V DD = 5V ± 10%

1 0

–

m s

V DD = 3V ± 10%

1 0

–

m s

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