PCF8583T/F5,118 NXP Semiconductors, PCF8583T/F5,118 Datasheet - Page 7

• Manufacturer Part Number: PCF8583T/F5,118
• Manufacturer: NXP Semiconductors

Specifications of PCF8583T/F5,118

• Bus Type: Serial (2-Wire, I2C)
• Date Format: DW:DM:M:Y
• Time Format: HH:MM:SS:hh
• Operating Supply Voltage (typ): 3.3/5V
• Package Type: SO
• Operating Supply Voltage (max): 6V
• Operating Supply Voltage (min): 2.5V
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 8
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Not Compliant

NXP Semiconductors
PCF8583
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. In the event-counter mode, events are stored in BCD format. D5
is the most significant and D0 the least significant digit. The divider is by-passed.
Fig 6.
Fig 7.
Fig 8.
MSB
7
013aaa371
6.
Format of the hours counter
Format of the year and date counter
Format of the weekdays and month counter
MSB
013aaa373
6
7
MSB
013aaa372
7
5
All information provided in this document is subject to legal disclaimers.
6
6
4
5
Rev. 06 — 6 October 2010
5
3
4
4
2
3
3
1
2
2
LSB
0
1
Figure
1
LSB
0
LSB
Clock and calendar with 240 x 8-bit RAM
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)
reset state: 0000 0000
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
8).
memory location 06h (weekdays/months)
reset state: 0000 0001
months in BCD format:
weekdays (0 to 6 binary, read as logic 0
if the mask flag is set)
unit place
ten's place
memory location 05h (year/date)
reset state: 0000 0001
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)
Figure
7). The weekdays and
PCF8583
© NXP B.V. 2010. All rights reserved.
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