參數(shù)資料
型號(hào)： R2043K-E2
廠商： RICOH COMPANY LTD
元件分類(lèi)： XO, clock
英文描述： 4-wire Serial Interface
中文描述： REAL TIME CLOCK, QCC12
封裝： 2 X 2 MM, 1 MM HEIGHT, FFP-12
文件頁(yè)數(shù)： 19/48頁(yè)
文件大小： 458K
代理商： R2043K-E2
R2043K/T
O
12345
Rev.2.05 - 19 -
Alarm_W Registers (Address 8-Ah)
Alarm_W Minute Register (Address 8h)
D7
D6
-
WM40
0
WM40
0
Alarm_W Hour Register (Address 9h)
D7
D6
-
-
D5
WM20
WM20
Indefinite
D4
WM10
WM10
Indefinite
D3
WM8
WM8
Indefinite
D2
WM4
WM4
Indefinite
D1
WM2
WM2
Indefinite
D0
WM1
WM1
Indefinite
(For Writing)
(For Reading)
Default Settings *)
Indefinite
D5
WH20
WP
/A
WH20
WP
/A
Indefinite
D4
WH10
D3
WH8
D2
WH4
D1
WH2
D0
WH1
(For Writing)
0
0
WH10
WH8
WH4
WH2
WH1
(For Reading)
0
0
Indefinite
Indefinite
Indefinite
Indefinite
Indefinite
Default Settings *)
Alarm_W Day-of-week Register (Address Ah)
D7
D6
-
WW6
0
WW6
0
*) Default settings: Default value means read / written values when the PON bit is set to “1” due to VDD
power-on from 0v.
*
The D5 bit of the Alarm_W Hour Register represents WP/A when the 12-hour mode is selected (0 for
a.m. and 1 for p.m.) and WH20 when the 24-hour mode is selected (tens in the hour digits).
*
The Alarm_W 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_W registers
may disable the alarm interrupt circuit.)
*
When the 12-hour mode is selected, the hour digits read 12 and 32 for 0 a.m. and 0 p.m., respectively.
(See "P12
O
Control Register 1 (ADDRESS Eh) (2) /12
24: 12-/24-hour Mode Selection Bit")
*
WW0 to WW6 correspond to W4, W2, and W1 of the day-of-week counter with settings ranging from
(0, 0, 0) to (1, 1, 0).
*
WW0 to WW6 with respective settings of 0 disable the outputs of the Alarm_W Registers.
D5
WW5
WW5
Indefinite
D4
WW4
WW4
Indefinite
D3
WW3
WW3
Indefinite
D2
WW2
WW2
Indefinite
D1
WW1
WW1
Indefinite
D0
WW0
WW0
Indefinite
(For Writing)
(For Reading)
Default Settings *)
Indefinite
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