ISL12022M_10 Datasheet, PDF (30/31 Pages) Intersil Corporation – Low Power RTC with Battery Backed SRAM,Integrated ±5ppm Temperature Compensation and Auto Daylight Saving

ISL12022M
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to
web to make sure you have the latest Rev. (Continued)
DATE
REVISION
CHANGE
07/22/09
FN6668.5
Corrected date from July 10, 2008 to July 10, 2009 and repost. No rev, no formal review
necessary per M Casino.
07/10/09
FN6668.5
Refer to following link for detailed list of changes:
http://intranet.intrepid.intersil.com/Windchill/wtcore/jsp/isil/ViewIsilPart.jsp?oid=VR%3Aext
.isil.part.mcol.MCOL%3A114266645
12/18/08
FN6668.4
Changed Storage Temperature on page 3 from:
"-65°C to +165°C" to "-40°C to +85°C"
12/15/08
FN6668.3
Added spec to datasheet - Delta FoutI on page 3.
Added Tape and Reel Reference Note to Ordering Information.
12/09/08
FN6668.2
Updated the following parameters in the spec table on page 3:
1. Changed Max for IDD1@5V from 6.5 to 7, and IDD1 @3V from 5.5 to 6.
2. Removed ÄATLSB (AT Sensitivity per LSB) from spec table.
11/03/08
FN6668.1
Complete overhaul of data sheet. Changed web destination to YES; ready for formal review in
support of POQ
Revised with final specs and text. Changes include:
Added text and equations for Ibat for temp sense ON, and for relative accuracy for 1m vs 10m
interval
Added text clarifying that no compensation at Vbat<2.7V
Revised entire Daylights savings time section
Added Application Example for DST
Added requirement for Vbat>1.8V in Vbat note.
Added apps circuit to survive Vbat<1.8V
Corrected All occurrences of Alpha tables
Corrected equations in NPPM section
BOLD and shade the COMPENSATON registers in the big table to indicate READ ONLY, add note
at top of table. Add READ ONLY statements to IATR, ALPHA, BETA, XT0, ALPHAH
Fixed blank bits in register tables and in text.
Register table: Change default values for compensation to xx's, they are different with each
device.
Added Datasheet curves
Add statement to Apps section on crystal handling similar to Maxim's
Updated Pb-free note according to lead finish (Order Info)
3/21/08
FN6668.1
**8/11 - Vaulted NO to the web. Datasheet being updated by Jim Pflasterer with additional
edits. This version is NOT a released version**
- Removed the "VDD" from the title on the first page. Updated File info and MCOL properties
page too.
- Global change for VBAT and VDD throughout document. Made the "BAT" and "DD" subscript.
- Included Battery Reseal Function in Features and Description on page 1
- Note 3 page 5, lower case "i" as in "inactive"
- Included symbol "Temp" for temp sensor accuracy in DC table on page 3
- First paragraph of DST Forward Registers had incorrect address stated (changed from 15h to
20h)
- Corrected register 20h on Page 20, added the DSTE bit to column 7
-EQ2, page 20, corrected to "NPPM = IPPM+ALPHA(T-XT0)2/4096"
02/29/08
FN6668.0 Initial Release with FN6668 making this a Rev 0.
Products
Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The
Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones,
handheld products, and notebooks. Intersil's product families address power management and analog signal
processing functions. Go to www.intersil.com/products for a complete list of Intersil product families.
*For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device
information page on intersil.com: ISL12022M
To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff
FITs are available from our website at http://rel.intersil.com/reports/search.php
30
FN6668.7
June 4, 2010