ST40RA166 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST40RA166' PDF : 88 Pages View PDF
6 Electrical specifications
ST40RA166
6.11 UDI and IEEE 1149.1 TAP AC specifications
Symbol
Parameter
Min
Nom
Max
tTCHTCH
TCK period
50
tDCHDCH
DCK period
50
tTIVTCH
TAP inputs setup to TCK/DCK high
5
tTCHTIX
TAP input hold after TCK/DCK high
5
tTCHTOV
TCK/DCK low to TAP output valid
10
Table 31: TAP timings
a. During IEEE1149.1 drive board level manufacturing tests only TCK is active.
b. During application level diagnostics only DCLK is active.
Units
ns
ns
ns
ns
ns
Notes
a
b
DCK
TCK
TDI
TMS
TDO
tDCHTIX
tTCHTIX
tDCHDCH
tTCHTCH
tTIVTCH
tTCHTOV
Figure 18: UDI and IEEE TAP timings
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