DS1553 Maxim, DS1553 Datasheet - Page 16

• Manufacturer Part Number: DS1553
• Description: The DS1553 is a full-function, year-2000-compliant (Y2KC) real-time clock/calendar (RTC) with an RTC alarm, watchdog timer, power-on reset, battery monitor, and "8k x 8 nonvolatile static RAM (NV SRAM)
• Manufacturer: Maxim

POWER-UP/DOWN CHARACTERISTICS
(V
Figure 8. Power-Up/Down Waveform Timing 5V Device
CE or WE at V
V
V
V
V
Expected Data Retention Time
(Oscillator On)
CC
CC
CC
CC
PF
to RST High
= 5.0V ± 1 0%, T
Fall Time: V
Fall Time: V
Rise Time: V
PARAMETER
IH
, Before Power-Down
PF(MAX)
PF(MIN)
PF(MIN)
A
to V
to V
to V
= Over the operating range.)
SO
PF(MIN)
PF(MAX)
SYMBOL
t
t
t
t
REC
t
t
PD
DR
FB
R
F
16 of 20
MIN
300
10
40
10
0
0
TYP
MAX
200
UNITS
years
ms
s
s
s
s
NOTES
6, 7