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參數(shù)資料
| 型號： | RF5C62 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | REAL-TIME CLOCK |
| 中文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO18 |
| 封裝： | SOP-18 |
| 文件頁數(shù)： | 16/48頁 |
| 文件大小： | 419K |
| 代理商： | RF5C62 |
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D3
D2
D1
D0
AM
8
AM
4
AM
2
AM
1
(For read and write operations) 1-minute alarm digit (at“2h”)
*
AM
40
AM
20
AM
10
(For read and write operations) 10-minute alarm digit (at“3h”)
AH
8
AH
4
AH
2
AH
1
(For read and write operations) 1-hour alarm digit (at“4h”)
*
*
AP/A or AH
20
AH
10
(For read and write operations) 10-hour alarm digit (at“5h”)
12
RP/RF/RS5C62
2.6 Alarm Register (1-minute, 10-minute, 1-hour, and 10-hour) (BANK1 at “2h to 5h”)
*
1) The bits marked with “
*
” are always read as “0” and not intended for write operation.
*
2) When enabling an alarm interrupt, non-existent minute and hour alarm digits must not be left (to prevent mismatching between clock time and alarm
time).
*
3) Alarm minute and hour settings are exemplified in the table below:
*
4) In the the 12-hour time scale, the hour digits of 12 and 32 indicate 0 o'clock a.m. and 0 o'clock p.m., respectively.
Alarm minute
and hour setting
12-hour time scale
24-hour time scale
10-hour
digit
1-hour
digit
10-minute 1-minute
digit
10-hour
digit
1-hour
digit
10-minute 1-minute
digit
digit
digit
0 : 00 a.m.
1
2
0
0
0
0
0
0
1 : 30 a.m.
0
1
3
0
0
1
3
0
11 : 59 a.m.
1
1
5
9
1
1
5
9
0 : 00 p.m.
3
2
0
0
1
2
0
0
1 : 30 p.m.
2
1
3
0
1
3
3
0
11 : 59 p.m.
3
1
5
9
2
3
5
9
2.7 12/24-hour Time Scale Selection Register (BANK1 at “Ah”)
D3
*
*
1
D2
*
D1
*
D0
0
0
0
0
(For write operation)
(For read operation)
*
2
12/24-hour time scale selection bit *
3,4
Function
0
1
Selects the 12-hour time scale with a.m. and p.m. indications.
Selects the 24-hour time scale.
12/24
12/24
*
1) The bits marked with “
*
” are not intended for write operation.
*
2) These bits are intended for only write operation and always read as “0”.
*
3) The time digits are indicated in binary-coded decimal (BCD) notation as shown in the table below:
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