mpc5553 Freescale Semiconductor, Inc, mpc5553 Datasheet - Page 31

• Manufacturer Part Number: mpc5553
• Description: Mpc5553 High Performance Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

3.13.3
1
2
3
4
5
Freescale Semiconductor
Spec
10
11
12
13
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. Set NPC_PCR[MCKO_DIV] to divide-by-two if the system frequency is greater than
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. The timing 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
MPC5553 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 22 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
Min
= 2.25–3.6 V,
4.0
= 3.0–3.6 V) to meet the timing
40
40
1
4
—
1
8
5
0
0
2
4
Electrical Characteristics
Max
3.0
3.0
3.0
60
60
12
—
—
—
—
—
—
8
9
t
t
MCYC
Unit
t
TCYC
t
CYC
CYC
ns
ns
ns
ns
ns
ns
ns
—
%
%
31