PT7C4307WEX Pericom Semiconductor, PT7C4307WEX Datasheet - Page 6

• Manufacturer Part Number: PT7C4307WEX
• Description: IC REAL TIME CLK/CALENDAR 8-SOIC
• Manufacturer: Pericom Semiconductor
• Type: Clock/Calendarr

Specifications of PT7C4307WEX

• Memory Size: 56B
• Time Format: Binary
• Date Format: Binary
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PT7C4307WEXTR

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This bit is used to select between 12-hour clock system and 24-hour clock system.
This bit is used to select between 12-hour clock operation and 24-hour clock operation.
* Be sure to select between 12-hour and 24-hour clock operation before writing the time data.
Days of the week Counter
The day counter is a divide-by-7 counter that counts from 01 to 07 and up 07 before starting again from 01. Values that
correspond to the day of week are user defined but must be sequential (i.e., if 1 equals Sunday, then 2 equals Monday, and so on).
Illogical time and date entries result in undefined operation.
Calendar Counter
The data format is BCD format.
•
•
•
PT0206(08/09)
Addr.
(hex)
12, /24
03
Read / Write
Day digits: Range from 1 to 31 (for January, March, May, July, August, October and December).
Month digits: Range from 1 to 12 and carried to year digits when cycled to 1.
Year digits: Range from 00 to 99 and 00, 04, 08, … , 92 and 96 are counted as leap years.
0
1
12, /24 bit
12, /24
Days of the week
Description
(default)
24-hour time display
12-hour time display
Range from 1 to 30 (for April, June, September and November).
Range from 1 to 29 (for February in leap years).
Range from 1 to 28 (for February in ordinary years).
Carried to month digits when cycled to 1.
Description
Data
0
1
D7
0
0
24-hour system
12-hour system
D6
0
0
24-hour clock
00
01
02
03
04
05
06
07
08
09
10
11
D5
0
0
6
12-hour clock
52 ( AM 12 )
41 ( AM 01 )
42 ( AM 02 )
43 ( AM 03 )
44 ( AM 04 )
45 ( AM 05 )
46 ( AM 06 )
47 ( AM 07 )
48 ( AM 08 )
49 ( AM 09 )
50 ( AM 10 )
51 ( AM 11 )
D4
0
0
Description
Hours register
Real-time Clock Module (I
D3
24-hour clock
0
0
12
13
14
15
16
17
18
19
20
21
22
23
Undefined Undefined Undefined
W4
D2
12-hour clock
61 ( PM 01 )
62 ( PM 02 )
63 ( PM 03 )
64 ( PM 04 )
65 ( PM 05 )
66 ( PM 06 )
67 ( PM 07 )
68 ( PM 08 )
69 ( PM 09 )
70 ( PM 10 )
71 ( PM 11 )
72 ( PM 12)
W2
D1
Data Sheet
PT7C4307
2
C Bus)
W1
D0
Ver: 3