F497 Просмотр технического описания (PDF) - Fujitsu

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F497

16-bit Proprietary Microcontroller

Fujitsu 

MB90495 Series

14.8 External Bus Hold Timing

Parameter

Symbol

Pin floating ⇒ HAK ↓ time

HAK ↑ time ⇒ Pin valid time

tXHAL

tHAHV

Pin

HAK

HAK

Test Condition

—

(TA = –40 to +85°C, VCC = 4.5 to 5.5 V, VSS = 0 V)

Rated Value

Min.

Max.

Units Remarks

30

tCP

ns

tCP

2 tCP

ns

Note: There is more than 1 cycle from when HRQ reads in until the HAK is changed.

HAK

Each pin

0.8V

tXHAL

2.4V

0.8V

High impedance

2.4V

tHAHV

2.4V

0.8V

Figure 14.9 Hold Timing

MB90495 Series Data Sheet (Advance Information) 32 / 40

FMG EMDC June 19, 2000

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