MCP79412-I/MS Microchip Technology, MCP79412-I/MS Datasheet - Page 33
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MCP79412-I/MS
Manufacturer Part Number
MCP79412-I/MS
Description
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-64
Manufacturer
Microchip Technology
Series
-r
Type
Clock/Calendarr
Datasheet
1.MCP79412-ISN.pdf
(40 pages)
Specifications of MCP79412-I/MS
Function
Clock/Calendar
Rtc Memory Size
64 Byte
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Rtc Bus Interface
I2C
Supply Current
1 uA
Features
Alarm, Leap Year, NVSRAM, Square Wave Output, Unique ID
Memory Size
64B
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
I²C
Voltage - Supply
1.8 V ~ 5.5 V
Voltage - Supply, Battery
1.3 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
APPENDIX A:
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.
2010-2011 Microchip Technology Inc.
REVISION HISTORY
APPENDIX B:
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
• The external CMOS source is stopped in
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.
7 in register 00h).
EXTOSC mode.
DEVICE ERRATA
MCP7941X
DS22266C-page 33