ST40RA166 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST40RA166' PDF : 88 Pages View PDF
6 Electrical specifications
6.7 General purpose peripheral bus (EMI) AC specifications
ST40RA166
FCLKOUT
ECLKOUT
MCLKOUT
Outputs switched on full cycle
Outputs switched on 1/2 cycle
Tri-state outputs
Inputs
tECHCH
tECHECH
tECLCL
tECHECL
tECHEOV
tRCLRCH
tECHLON
tECLEOV
tECHLOZ
tECHEIX
tEIVECH
tMWVECH tECHMWX
Figure 14: EMI AC timings
Symbol
Parameter
Min
Max Units Note
tECHECH
EMI reference clock period
12
ns
a
tECHECL
tECLECH
tECHCH
tECLCL
tECHEOV
tECLEOV
tECHEOZ
tECHEON
tEIVECH
EMI reference clock high time
EMI reference clock low period
EMI reference clock high to all clocks high
EMI reference clock low to all clocks low
EMI reference clock high to output signals valid
EMI reference clock low to output signals valid
EMI reference clock high to outputs tri-state
EMI reference clock high to outputs on
Input signals valid to EMI reference clock high
4
ns
4
ns
-1
0
ns
-1
0
ns
1
6.5
ns
-1
6.5
ns
1
4
ns
ns
1
4
ns
b
tECHEIX
Input signals hold after EMI reference clock high
2
ns
2
Table 27: EMI AC timings
a. EMI reference clock is defined as the time when ECLKOUT, MCLKOUT and FCLKOUT are all valid.
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