PT7C4302 Просмотр технического описания (PDF) - Pericom Semiconductor
Номер в каталоге
Компоненты Описание
Список матч
PT7C4302 Datasheet PDF : 16 Pages
| |||
Data Sheet
PT7C4302
Real-time Clock Module (3-wire Interface)
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
a) 12 / 24 bit
This bit is used to select between 12-hour clock operation and 24-hour clock operation.
12, /24
Description
Hours register
0 24-hour time display
1 12-hour time display
24-hour clock
00
01
02
03
04
05
06
07
08
09
10
11
12-hour clock
92 ( AM 12)
81 ( AM 01 )
82 ( AM 02 )
83 ( AM 03 )
84 ( AM 04 )
85 ( AM 05 )
86 ( AM 06 )
87 ( AM 07 )
88 ( AM 08 )
89 ( AM 09 )
90 ( AM 10 )
91 ( AM 11 )
24-hour clock
12
13
14
15
16
17
18
19
20
21
22
23
12-hour clock
B2 ( PM 12 )
A1 ( PM 01 )
A2 ( PM 02 )
A3 ( PM 03 )
A4 ( PM 04 )
A5 ( PM 05 )
A6 ( PM 06 )
A7 ( PM 07 )
A8 ( PM 08 )
A9 ( PM 09 )
B0 ( PM 10 )
B1 ( PM 11 )
Be sure to select between 12-hour and 24-hour clock operation before writing the time data.
4. 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.
Addr.
Description
D7
D6
D5
D4
D3
D2
D1
D0
(hex)
05 Days of the week
0
0
0
(default)
0
0
0
0
0
W4
W2
W1
0
0 Undefined Undefined Undefined
PT0225(11/05)
7
Ver: 0
Share Link: 