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SM8580 Datasheet(PDF) 7 Page - Nippon Precision Circuits Inc

Part # SM8580
Description  Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor
PDF  23 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

SM8580 Datasheet(HTML) 7 Page - Nippon Precision Circuits Inc

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SM8580AM
NIPPON PRECISION CIRCUITS—7
AC Characteristics (2)
VDD = 2.4 to 3.6V, VSS = 0V, Ta = −40 to 85°C, inputs VI = 0.5VDD, outputs VO = 0.5VDD
output load capacitance CL = 100pF (tACC, tACS, tARD)
VDD = 4.5 to 5.5V, VSS = 0V, Ta = −40 to 85°C, inputs VI = 0.5VDD, outputs VO = 0.5VDD
output load capacitance CL = 100pF (tACC, tACS, tARD)
P arameter
Symbol
Rating
Unit
min
m a x
Read cycle time
tRC
150
–
ns
Address access time
tAC C
–
150
ns
CE access time
tAC S
–
150
ns
RD access time
tARD
–
100
ns
CE output set time
tCLZ
5–
ns
CE output floating
tCHZ
–6 0
ns
RD output set time
tOLZ
5–
ns
RD output floating
tOHZ
–6 0
ns
Output hold time
tOH
10
–
ns
W r ite cycle time
tWC
150
–
ns
Chip select time
tCW
140
–
ns
Address valid to end-of-write
tAW
140
–
ns
Address setup time
tAS
0–
ns
Address hold time
tWR
0–
ns
W r ite pulsewidth
tWP
130
–
ns
Input data set time
tDW
80
–
ns
Input data hold time
tDH
0–
ns
P arameter
Symbol
Rating
Unit
min
m a x
Read cycle time
tRC
85
–
ns
Address access time
tAC C
–8 5
ns
CE access time
tAC S
–8 5
ns
RD access time
tARD
–4 5
ns
CE output set time
tCLZ
3–
ns
CE output floating
tCHZ
–3 0
ns
RD output set time
tOLZ
3–
ns
RD output floating
tOHZ
–3 0
ns
Output hold time
tOH
5–
ns
W r ite cycle time
tWC
85
–
ns
Chip select time
tCW
70
–
ns
Address valid to end-of-write
tAW
70
–
ns
Address setup time
tAS
0–
ns
Address hold time
tWR
0–
ns
W r ite pulsewidth
tWP
65
–
ns
Input data set time
tDW
35
–
ns
Input data hold time
tDH
0–
ns



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