MPC8640DEC datasheet(54/140 Pages) FREESCALE

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MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

JTAG

11.2

JTAG AC Electrical Specifications

Table 43 provides the JTAG AC timing specifications as defined in Figure 33 through Figure 35.

Table 42. JTAG DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

High-level input voltage

VIH

2OVDD + 0.3

Low-level input voltage

VIL

– 0.3

0.8

Input current

(VIN

1 = 0 V or V

IN = VDD)

IIN

—±5

μA

High-level output voltage

(OVDD = min, IOH = –100 μA)

VOH

OVDD – 0.2

—

Low-level output voltage

(OVDD = min, IOL = 100 μA)

VOL

—0.2

Note:

1. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1

and Table 2.

Table 43. JTAG AC Timing Specifications (Independent of SYSCLK) 1

At recommended operating conditions (see Table 3).

Parameter

Symbol 2

Min

Max

Unit

Notes

JTAG external clock frequency of operation

fJTG

33.3

MHz

JTAG external clock cycle time

t JTG

—

JTAG external clock pulse width measured at 1.4 V

tJTKHKL

—

JTAG external clock rise and fall times

tJTGR & tJTGF

TRST assert time

tTRST

—

Input setup times:

Boundary-scan data

TMS, TDI

tJTDVKH

tJTIVKH

—

Input hold times:

Boundary-scan data

TMS, TDI

tJTDXKH

tJTIXKH

—

Valid times:

Boundary-scan data

TDO

tJTKLDV

tJTKLOV

Output hold times:

Boundary-scan data

TDO

tJTKLDX

tJTKLOX

—

5, 6

JTAG external clock to output high impedance:

Boundary-scan data

TDO

tJTKLDZ

tJTKLOZ

5, 6

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