10.9 Serial Peripheral Interface (SPI) Timing
1
Table 10-14 SPI Timing
Characteristic
Symbol
Min
Max
Unit
See Figure
Cycle time
Master
Slave
tC
10-7, 10-8,
10-9, 10-10
125
62.5
—
—
ns
ns
Enable lead time
Master
Slave
tELD
tELG
tCH
tCL
10-10
10-10
—
31
—
—
ns
ns
Enable lag time
Master
Slave
—
125
—
—
ns
ns
Clock (SCK) high time
Master
Slave
10-7, 10-8,
10-9, 10-10
50
31
—
—
ns
ns
Clock (SCK) low time
Master
Slave
10-10
50
31
—
—
ns
ns
Data set-up time required for inputs
Master
Slave
tDS
tDH
tA
10-7, 10-8,
10-9, 10-10
20
0
—
—
ns
ns
Data hold time required for inputs
Master
Slave
10-7, 10-8,
10-9, 10-10
0
2
—
—
ns
ns
Access time (time to data active from
high-impedance state)
Slave
10-10
10-10
4.8
3.7
15
ns
ns
Disable time (hold time to high-impedance state)
Slave
tD
15.2
Data Valid for outputs
Master
Slave (after enable edge)
tDV
10-7, 10-8,
10-9, 10-10
—
—
4.5
20.4
ns
ns
Data invalid
Master
Slave
tDI
tR
tF
10-7, 10-8,
10-9, 10-10
0
0
—
—
ns
ns
Rise time
Master
Slave
10-7, 10-8,
10-9, 10-10
—
—
11.5
10.0
ns
ns
Fall time
Master
Slave
10-7, 10-8,
10-9, 10-10
—
—
9.7
9.0
ns
ns
1. Parameters listed are guaranteed by design.
56F8037/56F8027 Data Sheet, Rev. 6
152
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