SM8578BV Nippon_Precision_Circuits America, SM8578BV Datasheet - Page 4

• Manufacturer Part Number: SM8578BV
• Description: Real-time Clock ic
• Manufacturer: Nippon_Precision_Circuits America

Oscillator Characteristics
T
AC Characteristics
V
1. C
2. C
Oscillator start time
Oscillator stop voltage
Frequency voltage characteristic
Frequency accuracy
Output capacitance
CLK clock period
CLK HIGH-level pulsewidth
CLK LOW-level pulsewidth
CE setup time
CE hold time
CE recovery time
CLK hold time
Write data setup time
Write data hold time
Read data output delay time
Output disable delay time
Input rise and fall time
a
SS
= 25 C, C
L
L
=50pF
=50pF, RL=10k
= 0 V, C
CLK
C E
P arameter
P arameter
L
G
= 50 pF, T
= 10 pF, Seiko Epson C-002SH crystal (C
2
1
50%
a
= 40 to 85 C unless otherwise noted
S y m b o l
S y m b o l
t
V
t
CS
t
t
t
50%
CLK
t
t
t
CKH
t
t
t
STA
C
t
t
t
f/V
WH
STO
WL
CS
CH
CR
DS
DH
RD
RZ
RF
IC
D
V
V
V
V
DD
DD
DD
DD
m i n
600
300
300
150
200
300
50
50
50
–
–
–
= 1.6 V
= 1.6 to 5.5 V
= 5.0 V
= 5.0 V
SM8578BV
Condition
t
V
WL
D D
t
CLK
= 5 V ± 10%
typ
I
–
–
–
–
–
–
–
–
–
–
–
–
= 30 k , C
t
WH
m a x
200
100
20
–
–
–
–
–
–
–
–
–
L
m i n
–
–
10
–
= 6 pF) unless otherwise noted
2
1200
m i n
600
600
300
400
600
100
100
100
–
–
–
NIPPON PRECISION CIRCUITS—4
V
D D
Rating
t
typ
CH
15
= 3.0 V ± 10%
–
–
–
–
typ
–
–
–
–
–
–
–
–
–
–
–
–
t
CKH
t
CR
m a x
+10
5.0
1.5
+2
m a x
400
200
–
40
–
–
–
–
–
–
–
–
–
ppm/V
Unit
ppm
Unit
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
s