參數(shù)資料
型號(hào): LP3954
廠商: National Semiconductor Corporation
英文描述: Advanced Lighting Management Unit
中文描述: 高級(jí)照明管理單位
文件頁數(shù): 33/56頁
文件大?。?/td> 5801K
代理商: LP3954
When a READ function is to be accomplished, a WRITE function must precede the READ function, as shown in the Read Cycle
waveform.
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I
2
C Read Cycle
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2
C Timing Diagram
I
2
C Timing Parameters (V
DD1,2
= 3.0 to 4.5V, V
DD_IO
= 1.65V
to V
DD1,2
)
Symbol
Parameter
Limit
Units
Min
0.6
1.3
600
600
300
0
100
Max
900
900
300
1
2
3
4
5
5
6
7
Hold Time (repeated) START Condition
Clock Low Time
Clock High Time
Setup Time for a Repeated START Condition
Data Hold Time (Output direction, delay generated by LP3954)
Data Hold Time (Input direction, delay generated by the Master)
Data Setup Time
Rise Time of SDA and SCL
μs
μs
ns
ns
ns
ns
ns
ns
20+0.1C
b
15+0.1C
b
600
1.3
10
8
Fall Time of SDA and SCL
300
ns
9
Set-up Time for STOP condition
Bus Free Time between a STOP and a START Condition
Capacitive Load for Each Bus Line
ns
μs
pF
10
C
b
200
NOTE:
Data guaranteed by design
Autoincrement mode is available, with this possible read or write few byte with autoincreasing addresses, but LP3954 has holes
in address register map, and is recommended to use autoincrement mode only for the pattern command registers.
33
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