參數(shù)資料
型號: MCP79411T-I/SN
元件分類: 時鐘/數(shù)據(jù)恢復(fù)及定時提取
英文描述: REAL TIME CLOCK, PDSO8
封裝: 3.90 MM, ROHS COMPLIANT, PLASTIC, SOIC-8
文件頁數(shù): 27/40頁
文件大小: 584K
代理商: MCP79411T-I/SN
2010-2011 Microchip Technology Inc.
DS22266C-page 33
MCP7941X
APPENDIX A:
REVISION HISTORY
Revision A (10/2010)
Original release of this document.
Revision B (03/2011)
Minor typographical edits;
Added Appendix B: Device Errata
Revision C (07/2011)
Updated Section 4.2.6, Crystal Specs; Revised Figure
4-4.
APPENDIX B:
DEVICE ERRATA
Devices with silicon revision prior to A4 (date code prior
to 11/10) have an errata where the AM/PM bit (Bit 5 in
register 02h) may be flipped if the oscillator is stopped.
This is coincident with the OSCON bit getting cleared.
This can occur due to the following conditions:
The oscillator is stopped on the application.
The oscillator is stopped by clearing the ST bit (Bit
7 in register 00h).
The external CMOS source is stopped in
EXTOSC mode.
The work-around is to determine when the OSCON bit
is cleared and check in software for AM/PM bit corrup-
tion.
Devices with silicon revision A4 or later (date code after
11/09) do not have this issue.
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