Datasheet

MC9S08QE32 Series MCU Data Sheet, Rev. 7
Electrical Characteristics
Freescale Semiconductor22
Figure 15. Timer External Clock
Figure 16. Timer Input Capture Pulse
3.10.3 SPI Timing
Table 14 and Figure 17 through Figure 20 describe the timing requirements for the SPI system.
Table 13. TPM Input Timing
No. C Function Symbol Min Max Unit
1 D External clock frequency f
TCLK
0f
Bus
/4 Hz
2 D External clock period t
TCLK
4—t
cyc
3 D External clock high time t
clkh
1.5 — t
cyc
4 D External clock low time t
clkl
1.5 — t
cyc
5 D Input capture pulse width t
ICPW
1.5 — t
cyc
Table 14. SPI Timing
No. C Function Symbol Min Max Unit
—D
Operating frequency
Master
Slave
f
op
f
Bus
/2048
0
f
Bus
/2
1
f
Bus
/4
Hz
1D
SPSCK period
Master
Slave
t
SPSCK
2
4
2048
—
t
cyc
t
cyc
2D
Enable lead time
Master
Slave
t
Lead
12
1
—
—
t
SPSCK
t
cyc
3D
Enable lag time
Master
Slave
t
Lag
12
1
—
—
t
SPSCK
t
cyc
t
TCLK
t
clkh
t
clkl
TCLK
t
ICPW
TPMCHn
t
ICPW
TPMCHn