DS1553P Maxim Integrated Products, DS1553P Datasheet - Page 15

• Manufacturer Part Number: DS1553P
• Description: 64K NV Y2KC Real Time Clocks RAM
• Manufacturer: Maxim Integrated Products

AC TEST CONDITIONS
Output Load:
Input Pulse Levels:
Timing Measurement Reference Levels:
Input Pulse Rise and Fall Times: 5 ns
NOTES:
1. Voltage referenced to ground.
2. Typical values are at 25 C and nominal supplies.
3. Outputs are open.
4. Battery switch over occurs at the lower of either the battery voltage or V
5. The
6. Data retention time is at 25 C.
7. Each DS1553 has a built-in switch that disconnects the lithium source until V
8. Real Time Clock Modules (DIP) can be successfully processed through conventional wave-soldering
In addition, for the PowerCap:
user. The expected t
from the time power is first applied by the user.
techniques as long as temperature exposure to the lithium energy source contained within does not
exceed +85 C.
ultrasonic vibration is not used.
a. Dallas Semiconductor recommends that PowerCap Module bases experience one pass through
b. Hand soldering and touch-up: Do not touch or apply the soldering iron to leads for more than
Input: 1.5V
Output: 1.5V
solder reflow oriented with the label side up (“live-bug”).
3 seconds. To solder, apply flux to the pad, heat the lead frame pad and apply solder. To remove
the part, apply flux, heat the lead frame pad until the solder reflow and use a solder wick to
remove solder.
IRQ
/FT and
RST
Post solder cleaning with water washing techniques is acceptable, provided that
DR
outputs are open drain.
is defined for DIP modules as a cumulative time in the absence of V
100 pF + 1TTL Gate
0.0 to 3.0V
15 of 19
PF
.
CC
is first applied by the
CC
starting
DS1553