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DS1306 Datasheet(PDF) 6 Page - Dallas Semiconductor |
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DS1306 Datasheet(HTML) 6 Page - Dallas Semiconductor |
6 / 21 page DS1306 6 of 21 Figure 2. RTC REGISTERS AND ADDRESS MAP HEX ADDRESS READ WRITE Bit 7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 RANGE 00H 80H 0 10 SEC SEC 00–59 01H 81H 0 10 MIN MIN 00–59 P 12 A 01–12 + P/A 02H 82H 0 24 10 10-HR HOURS 00–23 03H 83H 0 0 0 0 0 DAY 01–07 04H 84H 0 0 10-DATE DATE 1–31 05H 85H 0 0 10-MONTH MONTH 01–12 06H 86H 10-YEAR YEAR 00–99 07H 87H M 10-SEC ALARM 0 SEC ALARM 0 00–59 08H 88H M 10-MIN ALARM 0 MIN ALARM 0 00–59 P 12 A 01–12 + P/A 09H 89H M 24 10 10-HR HOUR ALARM 0 00–23 0AH 8AH M 0 0 0 0 DAY ALARM 0 01–07 0BH 8BH M 10 SEC ALARM 1 SEC ALARM 1 00–59 0CH 8CH M 10 MIN ALARM 1 MIN ALARM 1 00–59 P 12 A 01–12 + P/A 0DH 8DH M 24 10 10-HR HOUR ALARM 1 00–23 0EH 8EH M 0 0 0 0 DAY ALARM 1 01–07 — 0FH 8FH CONTROL REGISTER — 10H 90H STATUS REGISTER — 11H 91H TRICKLE CHARGER REGISTER — 12–1FH 92–9FH RESERVED — 20–7FH A0– FFH 96-BYTES USER RAM — Note: Range for alarm registers does not include mask’m’ bits. The DS1306 can be run in either 12-hour or 24-hour mode. Bit 6 of the hours register is defined as the 12- or 24-hour mode select bit. When high, the 12-hour mode is selected. In the 12-hour mode, bit 5 is the AM/PM bit with logic high being PM. In the 24-hour mode, bit 5 is the second 10-hour bit (20 to 23 hours). The DS1306 contains two time-of-day alarms. Time-of-day alarm 0 can be set by writing to registers 87h to 8Ah. Time-of-day Alarm 1 can be set by writing to registers 8 Bh to 8 Eh. Bit 7 of each of the time-of- day alarm registers are mask bits (Table 1). When all of the mask bits are logic 0, a time-of-day alarm only occurs once per week when the values stored in timekeeping registers 00h to 03h match the values stored in the time-of-day alarm registers. An alarm is generated every day when bit 7 of the day alarm register is set to a logic 1. An alarm is generated every hour when bit 7 of the day and hour alarm registers is set to a logic 1. Similarly, an alarm is generated every minute when bit 7 of the day, hour, and |
Similar Part No. - DS1306_05 |
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Similar Description - DS1306_05 |
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