mpc5554mzp80r2 Freescale Semiconductor, Inc, mpc5554mzp80r2 Datasheet - Page 31

• Manufacturer Part Number: mpc5554mzp80r2
• Description: Mpc5554 High Performance Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

3.13.3
1
2
3
4
5
Freescale Semiconductor
Spec
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11
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JTAG specifications apply when used for debug functionality. All Nexus timing relative to MCKO is measured from 50% of
MCKO and 50% of the respective signal. Nexus timing specified at V
V
The Nexus AUX port runs up to 82 MHz.
MDO, MSEO, and EVTO data is held valid until the next MCKO low cycle occurs.
Limit the maximum frequency to approximately 16 MHz (V
specification for t
The RDY pin timing is asynchronous to MCKO and is guaranteed by design to function correctly.
1
2
3
4
5
6
7
8
9
DD33
MCKO cycle time
MCKO duty cycle
MCKO low to MDO data valid
MCKO low to MSEO data valid
MCKO low to EVTO data valid
EVTI pulse width
EVTO pulse width
TCK cycle time
TCK duty cycle
TDI, TMS data setup time
TDI, TMS data hold time
TCK low to TDO data valid
RDY valid to MCKO
and V
V
V
MCKO
MDO
MSEO
EVTO
DDE
DDE
Nexus Timing
= 2.25–3.0 V
= 3.0–3.6 V
DDSYN
JOV
= 3.0–3.6 V, T
of [0.2 x t
5
Characteristic
JCYC
A
3
] as outlined in the IEEE-ISTO 5001-2003 specification.
= T
3
3
MPC5554 Microcontroller Data Sheet, Rev. 2.0
L
Table 21. Nexus Debug Port Timing
to T
4
5
Figure 10. Nexus Output Timing
H
, and CL = 30 pF with DSC = 0b10.
1
DDE
2
= 2.25–3.0 V) or 20 MHz (V
3
DD
= 1.35–1.65 V, V
t
t
NTDIH,
Output Data Valid
NTDIS,
t
Symbol
t
t
EVTOPW
t
EVTIPW
t
t
MSEOV
t
EVTOV
MCYC
t
MDOV
TCYC
t
t
MDC
TDC
JOV
—
t
t
NTMSS
NTMSH
1
DDE
DDE
–1.5
–1.5
–1.5
= 2.25–3.6 V,
Min
4.0
= 3.0–3.6 V) to meet the timing
40
40
2
4
—
1
8
5
0
0
2
4
Electrical Characteristics
Max
3.0
3.0
3.0
60
60
12
10
—
—
—
—
—
—
8
t
t
MCYC
Unit
t
TCYC
t
CYC
CYC
ns
ns
ns
ns
ns
ns
ns
—
%
%
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