The DS1500WE+ is a Y2K watchdog RTC with non-volatile control in 32 pin TSOP package. It 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 non-volatile (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. 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 compensation valid up to the year 2100. Power control circuitry supports system power-on from date/day/time alarm or key closure. The DS1500 is used in remote systems, battery backed systems, telecom switches and office equipments.
- Supply voltage range is 3V to 3.6V
- Operating temperature range from 0°C to 70°C
- Programmable watchdog timer and RTC alarm
- Day of week/date alarm register
- Automatic battery backup and write protection to external SRAM
- Precision power-on reset
- 256bytes user non-volatile RAM
- Auxiliary battery input
- Accuracy better than ±1 minute/month at +25°C
- Battery voltage level indicator flags
时钟与计时, 消费电子产品
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