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NR8576AB Datasheet(PDF) 5 Page - Nippon Precision Circuits Inc

Part # NR8576AB
Description  Real-time Clock Modules
Download  11 Pages
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Manufacturer  NPC [Nippon Precision Circuits Inc]
Direct Link  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

NR8576AB Datasheet(HTML) 5 Page - Nippon Precision Circuits Inc

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NR8576 series
SEIKO NPC CORPORATOIN—5
AC Characteristics
Ta =
−40 to 85°C, CL = 50pF unless otherwise noted.
Parameter
Symbol
Rating
Unit
VDD = 5V ± 10%
VDD = 3V ± 10%
min
max
min
max
CLK clock period
tCLK
0.75
7800
1.5
7800
µs
CLK LOW-level pulsewidth
tCLKL
0.375
3900
0.75
3900
µs
CLK HIGH-level pulsewidth
tCLKH
0.375
3900
0.75
3900
µs
CE setup time
tCES
0.375
3900
0.75
3900
µs
CE hold time
tCEH
0.375
0.75
µs
CE enable time
tCE
0.9
0.9
sec
Write data setup time
tSD
0.1
0.2
µs
Write data hold time
tHD
0.1
0.1
µs
WR setup time
tWRS
100
100
ns
WR hold time
tWRH
100
100
ns
DATA output delay time
tDATD
0.2
0.4
µs
DATA output floating time
tDZ
0.1
0.2
µs
Clock rise time
tr1
50
100
ns
Clock fall time
tf1
50
100
ns
FOUT rise time (CL = 30pF)
tr2
100
200
ns
FOUT fall time (CL = 30pF)
tf2
100
200
ns
Disable time (CL = 30pF)
tHZ
100
200
ns
tLZ
100
200
ns
Enable time (CL = 30pF)
tZH
100
200
ns
tZL
100
200
ns
FOUT duty cycle (CL = 30pF)
Duty
40
60
40
60
%
Wait time
tRCV
0.95
1.9
µs


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