Motorola ColdFire MCF5281 - Manual (Page 709)

Electrical Characteristics
Freescale Semiconductor 33-25
Figure 33-15. QSPI Timing
33.16 JTAG and Boundary Scan Timing
Table 33-27. JTAG and Boundary Scan Timing
Num Characteristics
1
1
JTAG_EN is expected to be a static signal. Hence, it is not associated with any timing
Symbol Min Max Unit
1 TCLK Frequency of Operation f
JCYC
DC 1/4 f
sys
2 TCLK Cycle Period t
JCYC
4 — t
CYC
3 TCLK Clock Pulse Width t
JCW
25.0 — ns
4 TCLK Rise and Fall Times t
JCRF
0.0 3.0 ns
5 Boundary Scan Input Data Setup Time to TCLK Rise t
BSDST
5.0 — ns
6 Boundary Scan Input Data Hold Time after TCLK Rise t
BSDHT
25.0 — ns
7 TCLK Low to Boundary Scan Output Data Valid t
BSDV
0.0 30.0 ns
8 TCLK Low to Boundary Scan Output High Z t
BSDZ
0.0 30.0 ns
9 TMS, TDI Input Data Setup Time to TCLK Rise t
TAPBST
5.0 — ns
10 TMS, TDI Input Data Hold Time after TCLK Rise t
TAPBHT
10.0 — ns
11 TCLK Low to TDO Data Valid t
TDODV
0.0 25.0 ns
12 TCLK Low to TDO High Z t
TDODZ
0.0 8.0 ns
13 TRST Assert Time t
TRSTAT
100.0 — ns
14 TRST Setup Time (Negation) to TCLK High t
TRSTST
10.0 — ns
QSPI_CS[3:0]
QSPI_CLK
QSPI_DOUT
QS5
QS1
QSPI_DIN
QS3 QS4
QS2
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3