DA9021 datasheet(24/142 Pages) DIALOG

tên linh kiện	DA9021

Giải thích chi tiết về linh kiện	System PMIC with high efficiency USB power manager

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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

8.4

4-wire control bus

BIT 7

R/W

BIT 1

LSB

BIT 1

Address

R/W

DATA

nCS

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

Enable lead time

tCSS

2, from CS active to first SK

edge

Enable lag time

tSCS

3, from last SK edge to CS

idle

Clock low time

tCL

0.4 * tC

Clock high time

tCH

0.4 * tC

Data in setup time

tSIS

Data in hold time

tSIH

Data out valid time

tSOV

Data out hold time

tSOH

Data access time

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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