3 serial peripheral interface timing – Rainbow Electronics AT89LP214 User Manual
Page 77
77
3538A–MICRO–7/06
AT89LP213/214 [Preliminary]
24.3
Serial Peripheral Interface Timing
Table 24-1.
SPI Master Characteristics
Symbol
Parameter
Min
Max
Units
t
CLCL
Oscillator Period
41.6
ns
t
SCK
Serial Clock Cycle Time
4t
CLCL
ns
t
SHSL
Clock High Time
t
SCK
/2 - 25
ns
t
SLSH
Clock Low Time
t
SCK
/2 - 25
ns
t
SR
Rise Time
25
ns
t
SF
Fall Time
25
ns
t
SIS
Serial Input Setup Time
10
ns
t
SIH
Serial Input Hold Time
10
ns
t
SOH
Serial Output Hold Time
10
ns
t
SOV
Serial Output Valid Time
35
ns
Table 24-2.
SPI Slave Characteristics
Symbol
Parameter
Min
Max
Units
t
CLCL
Oscillator Period
41.6
ns
t
SCK
Serial Clock Cycle Time
4t
CLCL
ns
t
SHSL
Clock High Time
1.5 t
CLCL
- 25
ns
t
SLSH
Clock Low Time
1.5 t
CLCL
- 25
ns
t
SR
Rise Time
25
ns
t
SF
Fall Time
25
ns
t
SIS
Serial Input Setup Time
10
ns
t
SIH
Serial Input Hold Time
10
ns
t
SOH
Serial Output Hold Time
10
ns
t
SOV
Serial Output Valid Time
35
ns
t
SOE
Output Enable Time
10
ns
t
SOX
Output Disable Time
25
ns
t
SSE
Slave Enable Lead Time
10
ns
t
SSD
Slave Disable Lag Time
0
ns