V3021SO8A EMMICRO [EM Microelectronic - MARIN SA], V3021SO8A Datasheet - Page 5

• Manufacturer Part Number: V3021SO8A
• Description: Ultra Low Power 1-Bit 32 kHz RTC
• Manufacturer: EMMICRO [EM Microelectronic - MARIN SA]

Timing Characteristics (standard temperature range)
V
Timing Characteristics (standard temperature range)
V
Note 1 : t
Note 2 : CS , RD , DS , WR and R/ W rise and fall times are specified by t
Note 3 : t
Note 4 : t
Note 5 : t
Note 6 : t
Copyright © 2005, EM Microelectronic-Marin SA
Parameter
Chip select duration
RAM access time
Time between two transfers
Rise time
Fall time
Data valid to Hi-impedance
Write data settle time
Data hold time
Advance write time
Write pulse time
Parameter
Chip select duration
RAM access time
Time between two transfers
Rise time
Fall time
Data valid to Hi-impedance
Write data settle time
Data hold time
Advance write time
Write pulse time
SS
SS
= 0V and T
= 0V and T
Typically, t
ACC
DF
DW
DH
WC
(note 2)
(note 2)
(note 2)
(note 2)
starts from RD or CS , whichever deactivates first
starts from WR or CS , whichever deactivates first
ends at WR or CS , whichever deactivates first
starts from WR or CS , whichever activates last and ends at WR or CS , whichever deactivates first
starts from RD or CS , whichever activates last
R
A
A
=-40 to +85°C, unless otherwise specified
=-40 to +125°C, unless otherwise specified
(note 5)
(note 5)
(note 6)
(note 6)
ACC
(note 1)
(note 1)
(note 4)
(note 4)
= 5 + 0.9 C
(note 3)
(note 3)
EXT
in ns; where C
Symbol
Symbol
t
t
t
t
t
t
t
t
t
ADW
t
ADW
t
ACC
t
t
ACC
t
t
WC
t
WC
t
DW
t
DW
CS
t
DF
DH
CS
t
DF
DH
W
W
R
F
R
F
Test Conditions
Write cycle
C
Test Conditions
Write cycle
C
EXT
LOAD
LOAD
(external parasitic capacitance) is in pF
= 50pF
= 50pF
5
Min.
Min.
200
500
200
200
500
200
10
10
10
60
80
25
10
10
10
60
80
25
V
V
DD
DD
R
and t
≥ 2V
≥ 2V
Max.
Max.
180
200
200
100
180
100
100
100
F
Min.
Min.
100
120
50
10
10
15
50
25
10
50
60
10
10
50
25
15
60
5
V
V
DD
DD
= 5.0V ±10%
= 5.0V ±10%
Typ.
Typ.
50
30
50
30
www.emmicroelectronic.com
Max.
Max.
200
200
100
100
60
40
60
50
V3021
Table 4 ex.
Unit
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Table 4