4 external clock drive, External clock drive waveform – Rainbow Electronics AT89LP216 User Manual
Page 79
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79
3621A–MICRO–6/06
AT89LP216 [Preliminary]
Figure 24-4. SPI Slave Timing (CPHA = 1)
24.4
External Clock Drive
Figure 24-5.
External Clock Drive Waveform
SS
SCK
(CPOL = 0)
SCK
(CPOL = 1)
MISO
MOSI
t
SCK
t
SSE
t
SHSL
t
SHSL
t
SLSH
t
SLSH
t
SSD
t
SIH
t
SIS
t
SOE
t
SOV
t
SOH
t
SOX
t
SF
t
SR
Symbol
Parameter
V
CC
= 2.4V to 5.5V
Units
Min
Max
1/t
CLCL
Oscillator Frequency
0
20
MHz
t
CLCL
Clock Period
50
ns
t
CHCX
High Time
12
ns
t
CLCX
Low Time
12
ns
t
CLCH
Rise Time
5
ns
t
CHCL
Fall Time
5
ns
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