MPC7448 datasheet(20/60 Pages) FREESCALE

20 / 60 page

MPC7448 RISC Microprocessor Hardware Specifications, Rev. 3

Freescale Semiconductor

Electrical and Thermal Characteristics

Figure 6 provides the input/output timing diagram for the MPC7448.

Figure 6. Input/Output Timing Diagram

5.2.3

IEEE Std. 1149.1 AC Timing Specifications

Table 10 provides the IEEE Std. 1149.1 (JTAG) AC timing specifications as defined in Figure 8 through

Figure 11.

Table 10. JTAG AC Timing Specifications (Independent of SYSCLK)1

At recommended operating conditions. See Table 4.

Parameter

Symbol

Min

Max

Unit

Notes

TCK frequency of operation

fTCLK

033.3

MHz

TCK cycle time

tTCLK

—

TCK clock pulse width measured at 1.4 V

tJHJL

—

TCK rise and fall times

tJR and tJF

—2

TRST assert time

tTRST

—

SYSCLK

All Inputs

VM = Midpoint Voltage (OVDD/2)

All Outputs

tKHOX

tKHDV

(Except TS,

ARTRY, SHD0, SHD1)

All Outputs

ARTRY,

(Except TS,

ARTRY, SHD0, SHD1)

tKHOE

tKHOZ

tKHTSPZ

tKHARPZ

tKHARP

SHD1

SHD0,

tKHOV

tKHAV

tKHDX

tKHAX

tIXKH

tAXKH

tKHTSX

tKHTSV

tKHARV

tKHARX

tIVKH

tAVKH

tMVKH

tMXKH

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