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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)： | 20/48頁 |
| 文件大?。?/td> | 419K |
| 代理商： | RF5C62 |
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D3
D2
D1
D0
D
8
D
4
D
2
D
1
(For read and write operations) 1-day calendar digit (at“7h”)
*
*
1
MO
8
*
D
20
D
10
(For read and write operations) 10-day calendar digit (at“8h”)
MO
4
MO
2
MO
1
(For read and write operations) 1-month calendar digit (at“9h”)
*
Y
8
*
Y
4
*
Y
2
MO
10
(For read and write operations) 10-month calendar digit (at“Ah”)
Y
1
(For read and write operations) 1-year calendar digit (at“Bh”)
Y
80
Y
40
Y
20
Y
10
(For read and write operations) 10-year calendar digit (at“Ch”)
D3
D2
D1
D0
*
W
4
W
2
W
1
(For read and write operations) Day-of-the-week counter
16
RP/RF/RS5C62
*
1) The bits marked with “
*
” are always read as “0” and not intended for write operation.
*
2) The day-of-the-week counter is incremented by 1 in a carry to the 1-day calendar digit.
*
3) Days of the week written to the W
4
, W
2
, and W
1
bits are counted up in septimal notation as shown below :
(000)
(001)
.....
(110)
(000)
The correspondence between days of the week and readings of the day-of-the-week counter is user-definable (e.g. Sunday=000)
*
4) The W
4
, W
2
, and W
1
bits must not be all set to 1.
3.2 Day-of-the-week Counter (BANK0 at “6h”)
3.3 Calendar Counter (BANK0 at “7h” to “Ch”)
*
1) The bits marked with “
*
” are always read as “0” and not intended for write operation.
*
2) The calendar digits are indicated in BCD notation by the automatic calendar function as shown below:
Day digit
: Ranges from 1 to 31 (in January, March, May, July, August, October, and December)
Ranges from 1 to 30 (in April, June, September, and November)
Ranges from 1 to 29 (in February in leap years)
Ranges from 1 to 28 (in February in normal years)
Carried to the month digit in transition back to 1.
Month digit: Ranges from 1 to 12 carried to the year digit in transition back to 1.
Year digit : Ranges from 00 to 99 including leap years of 00, 04, 08, - - - - - -, 92, and 96 (when leap year indication is enabled by setting the LYE
bit in the leap year indication register to “0” ).
*
3) A carry from any non-existent calendar digit must be avoided because it may cause malfunction in the calendar counter.
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