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參數(shù)資料
| 型號： | SM8578 |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | Real-time Clock IC |
| 中文描述： | 實(shí)時時鐘IC |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 117K |
| 代理商： | SM8578 |
SM8578BV
NIPPON PRECISION CIRCUITS INC.—13
USAGE NOTES
Data Read/Write
I
For both writing and reading data, the first 4 bits after CE goes HIGH are mode select bits, the next 4 bits
assign the address, and subsequent bits are read/write data in 8-bit units.
I
When writing data, the data must be input in 8-bit units.
I
If CE goes LOW before an 8-bit unit data word is input, the 8-bit data being written when CE goes LOW
will not be written correctly.
I
Write data and read data are in LSB-first format.
[Write mode]
1)If the first 4 bits after CE goes HIGH have value “3”, write mode is selected. The next 4 bits determine the
write address.
2)The next 8-bit data unit is written to the write address, and subsequent 8-bit data units are written to consec-
utive locations addressed using an automatic address increment function.
3)The address automatic increment function is cyclical, with address 0 following after address F.
[Read mode]
1)If the first 4 bits after CE goes HIGH have value “C”, read mode is selected. The next 4 bits determine the
read address.
2)The next 8-bit data unit is read from the read address, and subsequent 8-bit data units are read from consec-
utive locations addressed using an automatic address increment function.
3)The address automatic increment function is cyclical, with address 0 following after address F.
Note.If the mode set code is neither “C” nor “3”, all subsequent data is ignored and the DATA pin input state is maintained.
D0 D1 D2 D3
D0 D1
D4 D5
D2 D3
D2 D3
D6 D7
CE
CLK
DATA
D0 D1
D0 D1
D4 D5
D2 D3
D6 D7
Write mode
select code (3
H
)
Adress
select (N)
Data write (adress N)
Data write (adress N+1)
D0 D1 D2 D3 D0 D1 D2 D3
CE
CLK
DATA
D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7
Read mode
select code (C
H
)
Adress
select (N)
From the point DATA is in output mode.
Data read (adress N)
Data read (adress N+1)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SM8578BV | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC |
| SM8580 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| SM8580AM | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| SM8580AM_06 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| SM86/16MMPX21/11MMPX21/100MM | 制造商:HUBER+SUHNER 功能描述:ASSEMBLY MMPX STR-RA 100MM |
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