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WM8321 Datasheet(PDF) 28 Page - Wolfson Microelectronics plc

Part # WM8321
Description  Processor Power Management Subsystem
PDF  253 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8321 Datasheet(HTML) 28 Page - Wolfson Microelectronics plc

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WM8321
Production Data
w
PD, February 2012, Rev 4.0
28
Figure 2 Control Interface Timing - 4-wire (SPI) Control Mode (Write Cycle)
Figure 3 Control Interface Timing - 4-wire (SPI) Control Mode (Read Cycle)
Test Conditions
TJ = -40ºC to +125 ºC unless otherwise stated.
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
CS
¯¯ falling edge to SCLK1 rising edge
tCSU
40
ns
SCLK1 falling edge to CS
¯¯ rising edge
tCHO
10
ns
SCLK1 pulse cycle time
tSCY
200
ns
SCLK1 pulse width low
tSCL
80
ns
SCLK1 pulse width high
tSCH
80
ns
SDA1 to SCLK1 set-up time
tDSU
40
ns
SDA1 to SCLK1 hold time
tDHO
10
ns
Pulse width of spikes that will be suppressed
tps
0
5
ns
SCLK1 falling edge to SDOUT1 transition
tDL
40
ns
The CS
¯¯ pin must be held high for at least 1
s after every register write operation in SPI mode.



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