PCF8583 Datasheet, PDF (8/28 Pages) NXP Semiconductors – Clock/calendar with 240 x 8-bit RAM

Philips Semiconductors
Clock/calendar with 240 × 8-bit RAM
Product specification
PCF8583
handbook, full pagewidth
MSB
LSB
7 6 54 3 21 0
MRB002
memory location 04 (hours counter)
reset state: 0000 0000
unit hours BCD
ten hours (0 to 2 binary)
AM/PM flag:
0 AM
1 PM
format:
0 24 h format, AM/PM flag
remains unchanged
1 12 h format, AM/PM flag
will be updated
Fig.5 Format of the hours counter.
handbook, full pagewidth
MSB
LSB
7 65 432 10
MRB003
memory location 05 (year/date)
reset state: 0000 0001
unit days BCD
ten days (0 to 3 binary)
year (0 to 3 binary, read as 0 if
the mask flag is set)
Fig.6 Format of the year/date counter.
handbook, full pagewidth
MSB
LSB
76 543 210
MRB004
memory location 06 (weekdays/months)
reset state: 0000 0001
unit months BCD
ten months
weekdays (0 to 6 binary, read as 0 if
the mask flag is set)
1997 Jul 15
Fig.7 Format of the weekdays/month counter.
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