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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)： | 19/48頁 |
| 文件大?。?/td> | 419K |
| 代理商： | RF5C62 |
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D3
D2
D1
D0
S
8
S
4
S
2
S
1
(For read and write operations) 1-second time digit (at“0h”)
*
M
8
S
40
S
20
S
10
(For read and write operations) 10-second time digit (at“1h”)
M
4
M
2
M
1
(For read and write operations) 1-minute time digit (at“2h”)
*
H
8
M
40
M
20
M
10
(For read and write operations) 10-minute time digit (at“3h”)
H
4
H
2
H
1
(For read and write operations) 1-hour time digit (at“4h”)
*
*
P/A or H
20
H
10
(For read and write operations) 10-hour time digit (at“5h”)
15
RP/RF/RS5C62
*
3) Relationship between TMFG Bit and TMOUT pin output
*
4) The timer is stopped (the TMOUT pin output is turned off) upon driving low the CE pin input, but restarted upon driving high the CE pin input.
*
5) Timer output is disabled (the TMOUT pin output is turned off) upon resetting the TM
3
bit to “0” when the stop of oscillation is detected (setting the
XSTP bit to “1”).
*
6) Timer output is turned off (the TMOUT pin output is turned off) upon setting the TMR bit to “1” in the control register 1 during timer output (while the
TMOUT pin is held low).
*
1) The bits marked with “
*
” are always read as “0” and not intended for write operation.
*
2) Upon setting the WTEN bit to “0” in the control register 1, a carry to the 1-second time digit from the second counter is disabled.
*
3) The time digits are indicated in BCD notation as shown below:
Second digit: Ranges from 00 to 59 and carried to the minute digit in transition from 59 to 00.
Minute digit: Ranges from 00 to 59 and carried to the hour digit in transition from 59 to 00.
Hour digit: Ranges as shown in “2. 7 12/24-hour Time Scale Selection Register” and carried to the day or day-of-the-week digit in transition from 11
p.m. to 12 a.m. or from 23 to 00.
*
4) A carry from any non-existent time digit must be avoided because it may cause malfunction in the time counter.
TMOUT
TMFG
Setting the TMR bit to “1”
Setting the TMR bit to “1”
0.244ms
MAX.T
1
T
2
T
3
3. Functions of Counters
3.1 Time Counter (BANK0 at “0h to 5h”)
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