MAXIM DS1284/DS1286 Watchdog Timekeepers Manual
Update: 30 September, 2023
DS1284/DS1286 is an integrated clock, alarm, watchdog timer and timer interval in a 28-pin JEDEC DIP and encapsulated DIP package. It contains an embedded lithium energy source and a quartz crystal, which eliminates the need for any external circuitry. DS1284 requires an external quartz crystal and a VBAT source, which could be a lithium battery. Data contained within 64 8-bit registers can be read or written in the same manner as byte-wide static RAM. Data is maintained in the watchdog timekeeper by intelligent control circuitry that detects the status of VCC and write protects memory when VCC is out of tolerance. The lithium energy source can maintain data and real time for over 10 years in the absence of VCC. Watchdog timekeeper information includes hundredths of seconds, seconds, minutes, hours, day, date, month, and year. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including correction for leap year. The DS1284/DS1286 operate in either 24-hour or 12- hour format with an AM/PM indicator. The devices provide alarm windows and interval timing between 0.01 seconds and 99.99 seconds. The real-time alarm provides for preset times of up to one week.
Brand: MAXIM
File format: PDF
Size: 300 KB
MD5 Checksum: 17E573D15143D565992361B967FBFB6F
Publication date: 21 March, 2012
Downloads: -
PDF Link: MAXIM DS1284/DS1286 Watchdog Timekeepers Manual PDF