PCF8593T NXP Semiconductors, PCF8593T Datasheet - Page 6

• Manufacturer Part Number: PCF8593T
• Manufacturer: NXP Semiconductors

Specifications of PCF8593T

• Bus Type: Serial (I2C)
• User Ram: 8Byte
• Package Type: SO
• Operating Supply Voltage (max): 6V
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 8
• Mounting: Surface Mount
• Date Format: DW:DM:M:Y
• Time Format: HH:MM:SS:hh
• Lead Free Status / RoHS Status: Compliant

NXP Semiconductors
PCF8593
Product data sheet
7.4 Counter registers
The format for 24 hour or 12 hour clock modes can be selected by setting the most
significant bit of the hours counter register. The format of the hours counter is shown in
Figure
The year and date are stored in memory location 05h (see
months are in memory location 06h (see
When reading these memory locations the year and weekdays are masked out when the
mask flag of the control and status register is set. This allows the user to read the date
and month count directly.
Fig 5.
Fig 6.
Fig 7.
MSB
7
013aaa383
5.
Format of the hours counter
Format of the year and date counter
Format of the weekdays and month counter
MSB
013aaa385
6
7
MSB
013aaa384
7
5
6
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6
4
5
Rev. 04 — 6 October 2010
5
3
4
4
2
3
3
1
2
2
LSB
0
1
Figure
1
LSB
0
LSB
AM/PM flag:
logic 0: AM
logic 1: PM
format:
logic 0: 24 hour format, AM/PM flag remains unchanged
memory location 04h (hours counter)
hours in BCD format:
unit place
ten's place (0 to 2 binary)
logic 1: 12 h format, AM/PM flag will be updated
0
7).
memory location 06h (weekdays/months)
months in BCD format:
unit place
ten's place
weekdays (0 to 6 binary, read as logic 0
if the mask flag is set)
memory location 05h (year/date)
days in BCD format:
unit place
ten's place (0 to 3 binary)
year (0 to 3 binary, read as logic 0
if the mask flag is set)
Low power clock and calendar
Figure
6). The weekdays and
PCF8593
© NXP B.V. 2010. All rights reserved.
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