DS1557WP-120IND+ Maxim Integrated Products, DS1557WP-120IND+ Datasheet - Page 16

• Manufacturer Part Number: DS1557WP-120IND+
• Description: IC RTC RAM Y2K 3.3V 120NS 34PCM
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAM/Y2Kr

Specifications of DS1557WP-120IND+

• Memory Size: 4M (512K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 34-PowerCap™ Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AC TEST CONDITIONS
Output Load: 50 pF + 1TTL Gate
Input Pulse Levels: 0 to 3.0V
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 switchover occurs at the lower of either the battery voltage or V
5) The IRQ/FT and RST outputs are open drain.
6) Data-retention time is at +25C.
7) Maxim recommends that PowerCap Module bases experience one pass through solder reflow oriented
8) Hand soldering and touch-up: Do not touch or apply the soldering iron to leads for more than
9) t
10) t
11)
PACKAGE INFORMATION
For the latest package outline information and land patterns, go to
in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE TYPE
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.
t
AH1
AH2
WC
34 PWRCP
= 200ns.
Input: 1.5V
Output: 1.5V
, t
, t
DH1
DH2
are measured from WE going high.
are measured from CE going high.
PACKAGE CODE
PC2+1
16 of 17
www.maxim-ic.com/packages
OUTLINE NO.
21-0246
PF
.
LAND PATTERN NO.
.
Note that a “+”, “#”, or “-”
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