DS1553 Maxim, DS1553 Datasheet - Page 17

• 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 9. Power-Up/Down Waveform Timing 3.3V Device
CAPACITANCE
(T
CE or WE at V
V
V
V
Expected Data Retention Time
(Oscillator On)
Capacitance on All Input Pins
Capacitance on IRQ/FT, RST, and
DQ Pins
A
CC
CC
CC
PF
= +25°C)
to RST High
= 3.3V ± 1 0%, T
Fall Time: V
Rise Time: V
PARAMETER
PARAMETER
IH
, Before Power-Down
PF(MAX)
PF(MIN)
A
to V
to V
= Over the operating range.)
PF(MAX)
PF(MIN)
SYMBOL
C
C
SYMBOL
IN
IO
t
t
t
REC
t
t
DR
PD
R
F
17 of 20
MIN
MIN
300
40
10
0
0
TYP
TYP
MAX
MAX
200
10
7
UNITS
UNITS
years
ms
s
s
s
pF
pF
NOTES
NOTES
6, 7
1
1