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參數(shù)資料
| 型號(hào)： | R2025D |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | High precision I2C-Bus Real-Time Clock Module |
| 中文描述： | REAL TIME CLOCK, DSO20 |
| 封裝： | 6.10 X 5 MM, 1.30 MM HEIGHT, SON-22/20 |
| 文件頁數(shù)： | 15/47頁 |
| 文件大小： | 524K |
| 代理商： | R2025D |
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R2025S/D
15
Time Counter (Address 0-2h)
Second Counter (Address 0h)
D7
-
S40
0
S40
0
Indefinite
Minute Counter (Address 1h)
D7
-
M40
0
M40
0
Indefinite
Hour Counter (Address 2h)
D7
-
-
D6
D5
S20
S20
D4
S10
S10
D3
S8
S8
D2
S4
S4
D1
S2
S2
D0
S1
S1
(For Writing)
(For Reading)
Default Settings *)
Indefinite
Indefinite
Indefinite
Indefinite
Indefinite
Indefinite
D6
D5
M20
M20
Indefinite
D4
M10
M10
Indefinite
D3
M8
M8
D2
M4
M4
D1
M2
M2
D0
M1
M1
(For Writing)
(For Reading)
Default Settings *)
Indefinite
Indefinite
Indefinite
Indefinite
D6
D5
P
/A
or
H20
P
/A
or
H20
Indefinite
D4
H10
D3
H8
D2
H4
D1
H2
D0
H1
(For Writing)
0
0
H10
H8
H4
H2
H1
(For Reading)
0
0
Indefinite
Indefinite
Indefinite
Indefinite
Indefinite
Default Settings *)
*) Default settings: Default value means read / written values when the PON bit is set to “1” due to VDD
power-on from 0 volts.
* Time digit display (BCD format) as follows:
The second digits range from 00 to 59 and are carried to the minute digit in transition from 59 to 00.
The minute digits range from 00 to 59 and are carried to the hour digits in transition from 59 to 00.
The hour digits range as shown in "P11
Control Register 1 (ADDRESS Eh) (2) /12
24: /12-24-hour Mode
Selection Bit" and are carried to the day-of-month and day-of-week digits in transition from PM11 to AM12
or from 23 to 00.
* Any writing to the second counter resets divider units of less than 1 second.
* Any carry from lower digits with the writing of non-existent time may cause the time counters to malfunction.
Therefore, such incorrect writing should be replaced with the writing of existent time data.
Day-of-week Counter (Address 3h)
D7
D6
D5
D4
D3
D2
W4
W4
Indefinite
D1
W2
W2
Indefinite
D0
W1
W1
Indefinite
-
0
0
-
0
0
-
0
0
-
0
0
-
0
0
(For Writing)
(For Reading)
Default Settings *)
*) Default settings: Default value means read / written values when the PON bit is set to “1” due to VDD
power-on from 0 volts.
* The day-of-week counter is incremented by 1 when the day-of-week digits are carried to the day-of-month
digits.
* Day-of-week display (incremented in septimal notation):
(W4, W2, W1) = (0, 0, 0)
→
(0, 0, 1)
→
…
→
(1, 1, 0)
→
(0, 0, 0)
* Correspondences between days of the week and the day-of-week digits are user-definable
(e.g. Sunday = 0, 0, 0)
* The writing of (1, 1, 1) to (W4, W2, W1) is prohibited except when days of the week are unused.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R2025S | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:High precision I2C-Bus Real-Time Clock Module |
| R2-0267-02 | 制造商:Southco 功能描述: |
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