參數(shù)資料
型號: PT7C4302WEX
廠商: Pericom
文件頁數(shù): 13/13頁
文件大?。?/td> 0K
描述: IC RTC NVSRAM 8SOIC
標(biāo)準(zhǔn)包裝: 1
類型: 時鐘/日歷
特點(diǎn): 閏年,NVSRAM,方波輸出,涓流充電器
存儲容量: 31B
時間格式: HH:MM:SS(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: 3 線串口
電源電壓: 1.2 V ~ 5.5 V
電壓 - 電源,電池: 1.5 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: PT7C4302WEXDKR
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12-07-0001
PT0225-4
07/04/12
9
PT7C4302
Real-time Clock Module (3-wire Interface)
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.
(hex)
Description
D7
D6
D5
D4
D3
D2
D1
D0
05
Days of the week
0
W4
W2
W1
(default)
0
Undefined Undefined Undefined
5.
Calendar Counter
The data format is BCD format.
Day digits: Range from 1 to 31 (for January, March, May, July, August, October and December).
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.
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.
Addr.
(hex)
Description
D7
D6
D5
D4
D3
D2
D1
D0
03
Dates
0
D20
D10
D8
D4
D2
D1
(default)
0
Undefined
04
Months
0
M10
M8
M4
M2
M1
(default)
0
Undefined
06
Years
Y80
Y40
Y20
Y10
Y8
Y4
Y2
Y1
(default)
Undefined
Note: Any registered imaginary time should be replaced by correct time, otherwise it will cause the clock counter malfunction.
6.
Trickle Charger
Addr.
Description
D7
D6
D5
D4
D3
D2
D1
D0
8
Trickle charger
TCS
DS
RS
(default)
0
1
0
1
0
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