MPC5553AVZ112R2 datasheet(30/60 Pages) FREESCALE

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MPC5553 Microcontroller Data Sheet, Rev. 0

Preliminary—Subject to Change Without Notice

Electrical Characteristics

Freescale Semiconductor

3.13.3

Nexus Timing

Figure 9. Nexus Output Timing

Table 21. Nexus Debug Port Timing1

1 JTAG specifications in this table 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 VDD = 1.35V to 1.65V, VDDE = 2.25V to 3.6V,

VDD33 and VDDSYN = 3.0V to 3.6V, TA = TL to TH, and CL = 30pF with DSC = 0b10.

Num

Characteristic

Symbol

Min

Max

Unit

MCKO Cycle Time

tMCYC

2 The Nexus AUX port can only run up to 82MHz. The NPC_PCR[MCKO_DIV] must be set to divide by 2 if the system frequency

is above 82MHz

8tCYC

MCKO Duty Cycle

tMDC

MCKO Low to MDO Data Valid3

3 MDO, MSEO, and EVTO data is held valid until next MCKO low cycle.

tMDOV

–1.5

3.0

MCKO Low to MSEO Data Valid3

tMSEOV

–1.5

3.0

MCKO Low to EVTO Data Valid3

tEVTOV

–1.5

3.0

EVTI Pulse Width

tEVTIPW

4.0

—

tTCYC

EVTO Pulse Width

tEVTOPW

1tMCYC

TCK Cycle Time

tTCYC

4 The maximum frequency must be limited to approximately 16 MHz (VDDE= 2.25 to 3.0 volts) or 22 MHz (VDDE= 3.0 to 3.6

volts) to meet the timing specification for tJOV of 0.2 x tJCYC as outlined in the IEEE-ISTO 5001-2003 specification.

—tCYC

TCK Duty Cycle

tTDC

TDI, TMS Data Setup Time

tNTDIS, tNTMSS

8—

TDI, TMS Data Hold Time

tNTDIH, tNTMSH

5—

TCK Low to TDO Data Valid

tJOV

VDDE = 2.25 to 3.0 volts

VDDE = 3.0 to 3.6 volts

RDY Valid to MCKO5

5 The RDY pin timing is asynchronous to MCKO. The timing is guaranteed by design to function correctly.

——

—

MCKO

MDO

MSEO

EVTO

Output Data Valid

MPC5553AVZ112R2 Datasheet(PDF) 30 Page - Freescale Semiconductor, Inc

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