DS1554-100 DALLAS [Dallas Semiconductor], DS1554-100 Datasheet - Page 15

• Manufacturer Part Number: DS1554-100
• Description: 256K NV Y2KC Timekeeping RAM
• Manufacturer: DALLAS [Dallas Semiconductor]

POWER-UP/DOWN WAVEFORM TIMING 5-VOLT DEVICE Figure 8
POWER-UP/DOWN CHARACTERISTICS
PARAMETER
Power-Down
V
V
V
V
V
V
Expected Data Retention Time
(Oscillator On)
CE
CC
PF(Min)
CC
CC
PF(MAX)
PF
or
to
Fall Time: V
Fall Time: V
Rise Time: V
RST
WE
at V
High
IH
PF(MAX)
PF(MIN)
PF(MIN)
, Before
to V
to
to
SO
SYMBOL
t
t
t
t
REC
t
t
DR
PD
FB
R
F
15 of 21
MIN
300
10
40
10
0
0
TYP
(0 C to 70 C; V
MAX
200
UNITS
CC
years
ms
= 5.0V 10%)
s
s
s
s
NOTES
6, 7
DS1554