SPC5668EF1AVMG datasheet(47/66 Pages) FREESCALE

47 / 66 page

Electrical Characteristics

MPC5668x Microcontroller Data Sheet, Rev. 6

Freescale Semiconductor

4.14.4

Nexus Debug Interface

Figure 13. Nexus Output Timing

Table 27. 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 VDDE =3.0–5.5 V, TA =TL to TH, and CL =30pF

with SRC = 0b11.

Spec

Characteristic

Symbol

Min

Max

Unit

MCKO Cycle Time

tMCYC

15.6

—

MCKO Duty Cycle

tMDC

MCKO Low to MDO, MSEO, EVTO Data Valid2

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

tMDOV

–0.1

0.25

tMCYC

EVTI Pulse Width

tEVTIPW

4.0

—

tTCYC

EVTO Pulse Width

tEVTOPW

1tMCYC

TCK Cycle Time3

3 The system clock frequency needs to be three times faster than the TCK frequency.

tTCYC

—

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

025

MCKO

MDO

MSEO

EVTO

Output Data Valid

EVTI

SPC5668EF1AVMG Datasheet(PDF) 47 Page - Freescale Semiconductor, Inc

SPC5668EF1AVMG Datasheet(HTML) 47 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66

Datasheet Download

Link URL