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DA9021 Datasheet(PDF) 24 Page - Dialog Semiconductor

Part # DA9021
Description  System PMIC with high efficiency USB power manager
PDF  142 Pages
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Manufacturer  DIALOG [Dialog Semiconductor]
Direct Link  http://www.dialog-semiconductor.com/
Logo DIALOG - Dialog Semiconductor

DA9021 Datasheet(HTML) 24 Page - Dialog Semiconductor

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DA9021/22
System PMIC with high efficiency USB power manager
Datasheet
Revision 2.5
17-Feb-2017
CFR0011-120-00 Rev 5
24 of 142
© 2017 Dialog Semiconductor
8.4
4-wire control bus
1
2
4
5
8
9
11
3
A6
A5
A4
BIT 7
R/W
BIT 1
LSB
LSB
BIT 1
Address
R/W
DATA
SO
SI
SK
nCS
7
6
Figure 5: 4-wire control bus timing diagram
NOTE
The above timing is valid for active low and high CS
Table 11: 4-wire timing
Parameter
Symbol
Label in Figure 5
Min
Typ
Max
Unit
Cycle time
tC
1
70
ns
Enable lead time
tCSS
2, from CS active to first SK
edge
20
ns
Enable lag time
tSCS
3, from last SK edge to CS
idle
20
ns
Clock low time
tCL
4
0.4 * tC
ns
Clock high time
tCH
5
0.4 * tC
ns
Data in setup time
tSIS
6
5
ns
Data in hold time
tSIH
7
5
ns
Data out valid time
tSOV
8
22
ns
Data out hold time
tSOH
9
6
ns
Data access time
tH
10
22
ns
8.5
Oscillator characteristics
Table 12: Oscillator
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Internal oscillator
frequency
before trimming
1.4
2.0
2.6
MHz
after trimming
1.9
2.1



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