NR8576AB datasheet(4/10 Pages) NPC

Part #	NR8576AB

Description	Real-time Clock Modules

Download	10 Pages

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Manufacturer	NPC [Nippon Precision Circuits Inc]

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

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4 / 10 page

NR8576 Series

NIPPON PRECISION CIRCUITS—4

Oscillator Characteristics

DC Electrical Characteristics

VSS = 0 V, VDD = 5.0 V ± 10%, Ta = −40 to 85 °C unless otherwise noted

Parameter

Symbol

Condition

Rating

Unit

Frequency deviation

∆f/f

O

Ta = 25 °C,

VDD = 5.0 V

NR8576

×A

5 ± 12

ppm

NR8576

×B

5 ± 23

ppm

Frequency temperature characteristic

Top

Ta = −10 to 70 °C,

VDD = 5.0 V, 25 °C std

+10/

−120

ppm

Frequency voltage characteristic

f/V

Ta = 25 °C,

VDD = 2.0 to 5.5 V

±2

ppm/V

Oscillator start time

tSTA

Ta = 25 °C, VDD = 2.5 V

3

s

Aging

fA

Ta = 25 °C, VDD = 5.0 V,

ﬁrst year

±5

ppm

Parameter

Symbol

Condition

Rating

Unit

min

typ

max

Current consumption

IDD1

VDD = 5.0 V

CE = VSS, FOE = VSS,

FSEL = VDD,

FOUT: ﬂoating

–

1.5

3.0

µA

IDD2

VDD = 3.0 V

–

1.0

2.0

µA

IDD3

VDD = 2.0 V

–

0.5

1.0

µA

IDD4

VDD = 5.0 V

CE = VSS, FOE = VDD,

FSEL = VSS,

FOUT: 32 kHz output

–

4.0

10.0

µA

IDD5

VDD = 3.0 V

–

2.5

6.5

µA

IDD6

VDD = 2.0 V

–

1.5

4.0

µA

HIGH-level input voltage

VIH

CE, FSEL, WR, FOE, CLK, DATA

0.8VDD

––

V

LOW-level input voltage

VIL

CE, FSEL, WR, FOE, CLK, DATA

–

0.2VDD

V

Input OFF leakage current

IOFF

CE, FSEL, WR, FOE, CLK;

VIN = VDD or VSS

–

0.5

µA

HIGH-level output voltage

VOH1

VDD = 5.0 V

IOH = −1.0 mA;

DATA, FOUT

4.5

–

V

VOH2

VDD = 3.0 V

2.0

–

V

LOW-level output voltage

VOL1

VDD = 5.0 V

IOL = 1.0 mA;

DATA, FOUT

–

0.5

V

VOL2

VDD = 3.0 V

–

0.8

V

Output load fanout

N/CL

FOUT

2 LSTTL/30 pF max.

Output leakage current

IOZH

VOUT = 5.5 V; DATA, FOUT

−1.0

–

1.0

µA

IOZL

VOUT = 0 V; DATA, FOUT

−1.0

–

1.0

µA

Supply voltage detect

threshold voltage

VDT

1.4

1.7

2.0

V

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