DS1330W Maxim, DS1330W Datasheet - Page 8

• Manufacturer Part Number: DS1330W
• Description: The DS1330W 3
• Manufacturer: Maxim

POWER-DOWN/POWER-UP TIMING
BATTERY WARNING TIMING
WARNING:
Under no circumstance are negative undershoots, of any amplitude, allowed when device is in battery
backup mode.
NOTES:
1.
2.
3. t
4. t
5. These parameters are sampled with a 5 pF load and are not 100% tested.
6. If the
7. If the
8. If
PARAMETER
V
V
V
V
V
V
Write Protection
V
V
PARAMETER
Battery Test Cycle
Battery Test Pulse Width
Battery Test to
PARAMETER
Expected Data
Retention Time
WE
RST
WE
CC
CC
CC
CC
CC
CC
CC
CC
going low to the earlier of
buffers remain in a high impedance state during this period.
buffers remain in high-impedance state during this period.
the output buffers remain in a high-impedance state during this period.
WE
OE
WP
DS
Fail Detect to
slew from V
Fail Detect to
slew from 0V to V
Valid to
Valid to End of
Valid to
Valid to
Inactive
Inactive
Active
WE
is measured from the earlier of
is specified as the logical AND of
= V
is high for a Read Cycle.
CE
CE
is low or the
IH
or V
low transition occurs simultaneously with or latter than the
high transition occurs prior to or simultaneously with the
CE
RST
BW
BW
TP
and
IL
Valid
Inactive
CE
to 0V
. If
Active
and
TP
OE
WE
= V
low transition occurs prior to or simultaneously with the
CE
IH
SYMBOL
SYMBOL
SYMBOL
or
during write cycle, the output buffers remain in a high impedance state.
t
t
t
t
t
t
BTPW
t
WE
t
t
t
RPD
REC
RPU
BPU
BTC
t
BW
t
DR
PD
PU
CE
R
F
going high.
or
CE
WE
and
going high.
MIN
MIN
MIN
150
150
150
10
8 of 10
WE
. t
WP
TYP
TYP
TYP
is measured from the latter of
200
24
MAX
MAX
MAX
125
350
WE
1.5
15
WE
2
1
1
1
high transition, the output
low transition, the output
(T
(T
UNITS
UNITS
UNITS
A
A
years
: See Note 10)
: See Note 10)
ms
ms
ms
µs
µs
µs
µs
hr
CE
s
s
s
(T
low transition,
A
= +25°C)
CE
NOTES
NOTES
NOTES
DS1330W
11
14
14
14
or
9
WE