SPC56EL70L3 datasheet(112/128 Pages) STMICROELECTRONICS

112 / 128 page

Electrical characteristics

SPC56EL70L3, SPC56EL70L5,PC564L70L3, SPC564L70L5

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DocID023953 Rev 5

Figure 25. JTAG boundary scan timing

3.20.4

Nexus timing

TCK

Output

Signals

Input

Signals

Output

Signals

Table 37. Nexus debug port timing(1)

No.

Symbol

Parameter

Conditions

Min

Max

Unit

1tMCYC

D MCKO Cycle Time

—

15.6

—

2tMDC

D MCKO Duty Cycle

—

3tMDOV

D MCKO Low to MDO, MSEO, EVTO Data Valid(2)

—–0.1

0.25

tMCYC

4tEVTIPW

D EVTI Pulse Width

—

4.0

—

tTCYC

5tEVTOPW

D EVTO Pulse Width

—

tMCYC

6tTCYC

D TCK Cycle Time(3)

—

62.5

—

7tTDC

D TCK Duty Cycle

—

8tNTDIS, tNTMSS D TDI, TMS Data Setup Time

—

9tNTDIH, tNTMSH D TDI, TMS Data Hold Time

—

tJOV

D TCK Low to TDO Data Valid

—

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.

2. For all Nexus modes except DDR mode, MDO, MSEO, and EVTO data is held valid until next MCKO low cycle.

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