pcf8583 NXP Semiconductors, pcf8583 Datasheet - Page 8

• Manufacturer Part Number: pcf8583
• Description: Clock/calendar With 240 X 8-bit Ram
• Manufacturer: NXP Semiconductors

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Philips Semiconductors
1997 Jul 15
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Clock/calendar with 240
MSB
MSB
MSB
MRB004
MRB003
7
7
7
MRB002
6
6
6
5
5
5
Fig.7 Format of the weekdays/month counter.
Fig.6 Format of the year/date counter.
4
4
4
Fig.5 Format of the hours counter.
8-bit RAM
3
3
3
2
2
2
1
1
1
8
LSB
LSB
LSB
0
0
0
memory location 06 (weekdays/months)
reset state: 0000 0001
unit months BCD
ten months
weekdays (0 to 6 binary, read as 0 if
AM/PM flag:
format:
memory location 04 (hours counter)
reset state: 0000 0000
unit hours BCD
ten hours (0 to 2 binary)
year (0 to 3 binary, read as 0 if
memory location 05 (year/date)
reset state: 0000 0001
unit days BCD
ten days (0 to 3 binary)
0 AM
1 PM
0
1
the mask flag is set)
24 h format, AM/PM flag
remains unchanged
12 h format, AM/PM flag
will be updated
the mask flag is set)
Product specification
PCF8583