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¹¦ÄÜÃèÊö | Y2K Watchdog RTC with Nonvolatile Control ʵʱʱÖÓ Y2K-Compliant Watchdog |
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Éú²ú³§ÉÌ | Maxim Integrated Products |
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GENERAL DESCRIPTION
The DS1500 is a full-function, year 2000-compliant real-time clock/calendar(RTC) with an alarm, watchdog timer, power-on reset, battery monitors, 256 bytes of on-board nonvolatile (NV) SRAM, NV control for backing up an external SRAM, and a 32.768kHz output. User access to all registers within the DS1500 is accomplished with a byte-wide interface, as shown in Figure 7. The RTC registers contain century, year, month, date, day, hours, minutes, and seconds data in 24-hour binary-coded decimal (BCD) format. Corrections for day of month and leap year are made automatically.
FEATURES
BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap-Year Compensation Valid Up to the Year 2100
Programmable Watchdog Timer and RTC Alarm
Century Register; Y2K-Compliant RTC
Automatic Battery Backup and Write Protection to External SRAM
+5V Operation
Precision Power-On Reset
Power-Control Circuitry Supports System Power-On from Date/Day/Time Alarm or Key Closure
256 Bytes User NV RAM
Auxiliary Battery Input
Accuracy Better than ¡À1 Minute/Month at +25¡ãC
Day-of-Week/Date Alarm Register
Battery Voltage-Level Indicator Flags
Industrial Temperature Range: -40¡ãC to +85¡ãC
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Microchip Technology
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Clock, Calendar. Alarm RTC
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DS1500YEN+ ²úÆ·Ïà¹ØÐͺÅ
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- C-15-002-R-SFCHI
- C-15-002-T-SFCHI
- CY7C1020-15ZC
- CY7C1021CV33-12VXE
- CY7C140-55DMB
- CY7C146-25JC
- CY7C420-40PC
- CY7C421-10JXC
- DS1500YN
- DS1501WEN/TR
- DS1501WEN+
- DS1670E+TRL
- EM640FU16BT-55S
- GQ2123
- M38037MFL-XXXSP
- M38D59G2-XXXHP
- MAX16038LLA26+T
- MAX16038LLA29+
- MAX9213ETM
- MAX9244GUM
- MAX9254EUM
- PHE426PA4330JR05
- SN54AHC374
- SN54AHC374_07
- TC1303B-FA3EMF
- XC6204A602ML
- XC6204B602ML
DatasheetÊý¾Ý±íPDFÒ³ÂëË÷Òý
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