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| 型號(hào)： | MSM6782-01 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | A CMOS Serial Interface Real Time Clock/Calendar.(具有CMOS串口的實(shí)時(shí)時(shí)鐘電路) |
| 中文描述： | 串行接口的CMOS實(shí)時(shí)時(shí)鐘/日歷。（具有的CMOS串口的實(shí)時(shí)時(shí)鐘電路） |
| 文件頁(yè)數(shù)： | 7/17頁(yè) |
| 文件大?。?/td> | 88K |
| 代理商： | MSM6782-01 |
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126
Semiconductor
MSM6782-01
FUNCTIONAL DESCRIPTION
REGISTER TABLE
The relation between the register's bit 0 and bit 1 is logically positive as 0=”L” and 1=”H”.
The counted values are in BCD notation.
For example, with 1-year register (Y
1
), (y
8
, y
4
, y
2
, y
1
) = (0, 0, 1, 0) means the last digit (“2”) of
“1992”.
Bit * also can be used as RAM.
It is unexecutable to write data into the IRQ-F bit.
The IRQ-F bit is set to “1” when a specified carry determined by the combination of t
1
and t
0
is executed.
The IRQ-F bit holds “1” until the reading of C
D
is complete and is reset to “0” automatically
after the reading of C
D
is complete .
The bit fo (OSC FLAG) memorizes that oscillation stops.
This bit is used to monitor the battery.
This bit is cleared by writing a “0”. (A “1” also can be written into this bit.)
The bit f
r
(READ FLAG) goes “0” when the CE pin is set at “L” level and goes “1” when a carry
occurs for 1-second digit while the CE input is at “H” level.
Thus, it is possible to judge whether a carry occurs for 1-second digit during the reading of
the clock register (CE input = “H”).
If the bit f
r
is set at “1”, it is required to read the clock register once more.
The “1” of the PM/AM bit indicates PM and its “0” indicates AM.
Register
name
1-second digit register
10-second digit register
1-minute digit register
10-minute digit register
1-hour digit register
10-hour digit register
1-day digit register
10-day digit register
1-month digit register
10-month digit register
1-year digit register
10-year digit register
Week digit register
Control register D
Control register E
Control register F
S
1
S
10
MI
1
MI
10
H
1
H
10
D
1
D
10
MO
1
MO
10
Y
1
Y
10
W
C
D
C
E
C
F
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Note
A3A2A1A0
D3
(MSB)
D2
D1
D0
(LSB)
Count
range
HEX
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
s
8
f
O
mi
8
f
r
h
8
f
r
d
8
f
r
mo
8
f
r
y
8
y
80
f
r
30-secADJ
t
1
TEST
s
4
s
40
mi
4
mi
40
h
4
PM/AM
d
4
*
mo
4
*
y
4
y
40
w
4
IRQ-F
t
0
24/12
s
2
s
20
mi
2
mi
20
h
2
h
20
d
2
d
20
mo
2
*
y
2
y
20
w
2
CAL/HW
INT/STND
STOP
s
1
s
10
mi
1
mi
10
h
1
h
10
d
1
d
10
mo
1
mo
10
y
1
y
10
w
1
HOLD
MASK
REST
0 to 9
0 to 5
0 to 9
0 to 5
0 to 9
0 to 1, 2
0 to 9
0 to 3
0 to 9
0 to 1
0 to 9
0 to 9
0 to 6
—
—
—
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