SM8578BV Просмотр технического описания (PDF) - Nippon Precision Circuits
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SM8578BV Datasheet PDF : 16 Pages
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SM8578BV
FUNCTIONAL DESCRIPTION
Register Table
Address
Function
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Read
Write
0
Second
FOS
40
20
10
8
4
2
1
Yes
Yes
1
Minute
fr
40
20
10
8
4
2
1
Yes Excl. bit 7
2
Hour
fr
*
20
10
8
4
2
1
Yes Excl. bit 7
3
Day-of-week
fr
6
5
4
3
2
1
0
Yes Excl. bit 7
4
Day
fr
*
20
10
8
4
2
1
Yes Excl. bit 7
5
Month
fr
*
*
10
8
4
2
1
Yes Excl. bit 7
6
Year
80
40
20
10
8
4
2
1
Yes
Yes
7
Minute alarm
AE
40
20
10
8
4
2
1
Yes
Yes
8
Hour alarm
AE
*
20
10
8
4
2
1
Yes
Yes
9
Day-of-week alarm AE
6
5
4
3
2
1
0
Yes
Yes
A
Day alarm
AE
*
20
10
8
4
2
1
Yes
Yes
B
Frequency
FE
*
FD4 FD3
*
FD2 FD1 FD0
Yes
Yes
C
Fixed cycle
TE
*
TD1 TD0
*
*
*
*
Yes
Yes
D Fixed-cycle counter 128
64
E
Control 1
*
*
32
16
8
*
TI/TP AF
4
2
1
TF
AIE
TIE
Yes
Yes
Yes
Yes*1
F
Control 2
*
TEST
* RESET HOLD
*
*
*
Yes
Yes
*1. The AF and TF bits have “0” only valid write data values.
Note 1. When power is applied, all register values are undefined, hence they must be initialized.
Note 2. When Register D is read, the previously preset data value written to the register is read.
NIPPON PRECISION CIRCUITS INC.—6
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