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參數(shù)資料
| 型號： | R2023T |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | 2-wire Serial Interface Real Time Clock IC |
| 中文描述： | 2線串行接口實時時鐘芯片 |
| 文件頁數(shù)： | 20/50頁 |
| 文件大?。?/td> | 512K |
| 代理商： | R2023T |
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R2023K/T
Example of Alarm Time Setting
Alarm
Preset alarm
time
20
Day-of-week
12-hour mode
1
0
h
r.
.
24-hour mode
1
h
r.
Sun. Mon. Tue. Wed.
Th.
Fri.
Sat.
1
h
r
1
0
m
in
.
1
m
in
.
1
0
h
r
.
1
0
m
in
.
1
mi
n.
WW
0
1
WW
1
1
WW
2
1
WW
3
1
WW
4
1
WW
5
1
WW
6
1
00:00 a.m. on all
days
01:30 a.m. on all
days
11:59 a.m. on all
days
00:00 p.m. on Mon.
to Fri.
01:30 p.m. on Sun.
11:59 p.m.
on Mon. ,Wed.,
and Fri.
Note that the correspondence between WW0 to WW6 and the days of the week shown in the above table is
only an example and not mandatory.
1
2
0
0
0
0
0
0
1
1
1
1
1
1
1
0
1
3
0
0
1
3
0
1
1
1
1
1
1
1
1
1
5
9
1
1
5
9
0
1
1
1
1
1
0
3
2
0
0
1
2
0
0
1
0
0
1
0
0
0
1
0
0
0
1
0
0
2
3
1
1
3
5
0
9
1
2
3
3
3
5
0
9
Alarm_D Register (Address B-Ch)
Alarm_D Minute Register (Address Bh)
D7
D6
-
DM40
0
DM40
0
Indefinit
e
Alarm_D Hour Register (Address Ch)
D7
D6
-
-
D5
DM20
DM20
Indefinit
e
D4
DM10
DM10
Indefinit
e
D3
DM8
DM8
Indefinit
e
D2
DM4
DM4
Indefinit
e
D1
DM2
DM2
Indefinit
e
D0
DM1
DM1
Indefinit
e
(For Writing)
(For Reading)
Default Settings *)
D5
DH20
DP/ A
DH20
DP/ A
Indefi
nite
D4
DH10
D3
DH8
D2
DH4
D1
DH2
D0
DH1
(For Writing)
0
0
DH10
DH8
DH4
DH2
DH1
(For Reading)
0
0
Indefi
nite
Indefi
nite
Indefi
nite
Indefi
nite
Indefi
nite
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 D5 bit represents DP/ A when the 12-hour mode is selected (0 for a.m. and 1 for p.m.) and DH20 when
the 24-hour mode is selected (tens in the hour digits).
* The Alarm_D registers should not have any non-existent alarm time settings.
(Note that any mismatch between current time and preset alarm time specified by the Alarm_D registers may
disable the alarm interrupt circuit.)
* When the 12-hour mode is selected, the hour digits read 12 and 32 for 0a.m. and 0p.m., respectively.
(See "P12
Control Register 1 (ADDRESS Eh) (2) 12 /24: 12 /24-hour Mode Selection Bit")
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PDF描述 |
|---|---|
| R2023T-E2 | 2-wire Serial Interface Real Time Clock IC |
| R2025D | High precision I2C-Bus Real-Time Clock Module |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R2023T-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:2-wire Serial Interface Real Time Clock IC |
| R2-0257-02 | 制造商:Southco 功能描述: |
| R2-0259-02 | 制造商:Southco 功能描述: |
| R2025D | 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 |
| 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 |
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