參數(shù)資料
型號: S-3511A
廠商: Seiko Instruments Inc.
英文描述: CMOS Real-Time Clock IC(3 Lines)(3線,CMOS實時時鐘芯片)
中文描述: CMOS實時時鐘IC(3線)(3線,實時時鐘芯片的CMOS)
文件頁數(shù): 6/31頁
文件大小: 183K
代理商: S-3511A
Real-Time Clock
S-3511A
Seiko Instruments Inc.
5
1-3.Communication data configuration
After turning the CS terminal to "H", send four-bit fixed code "0110" and succeedingly transfer the command of a 3-bit
length and read/write command of a one-bit length.
2.
Command configuration
There are seven types of commands which read from and write to various registers. The table below lists them. Any
command that is not listed in the table provides no operation.
C2
C1
C0
Description
0
0
0
Reset (00 (year), 01 (month), 01 (day), 0 (day of week),
00 (minute), 00 (second)) (*1)
0
0
1
Status register access
0
1
0
Real-time data access 1 (year data to)
0
1
1
Real-time data access 2 (hour data to)
1
0
0
Alarm time/frequency duty setting 1
1
0
1
Alarm time/frequency duty setting 2
1
1
0
Test mode start (*2)
1
1
1
Test mode end (*2)
(*1) Don't care the R/W bit of this command.
(*2) This command is access-disabled due to specific use for the IC test.
Table 2 Command list
Figure 5 Communication data
Command
0
1
1
0
C2
C1
C0
R/W
Fixed code
MSB
LSB
Read/Write bit
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