EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 377

• Manufacturer Part Number: EZ80F91MCU
• Description: eZ80Acclaim-TM Flash Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

PS019209-0504
External Bus Acknowledge Timing
External System Clock Driver Timing
Table 240. GPIO Port Output Timing
Table 241 provides information on the bus acknowledge timing.
Table 241. Bus Acknowledge Timing
Table 242 provides timing information for the PHI pin. The PHI pin allows external
peripherals to synchronize with the internal system clock driver on the eZ80F91
device.
Table 242. PHI System Clock Timing
Parameter
T
T
Parameter
T
T
Parameter
T
T
1
2
1
2
1
2
Abbreviation
PHI Clock Rise to Port Output Valid Delay
PHI Clock Rise to Port Output Hold Time
Abbreviation
PHI Clock Rise to BUSACK Assertion Delay
PHI Clock Rise to BUSACK Deassertion Delay
Abbreviation
PHI Clock Rise to PHI Rise
PHI Clock Fall to PHI Fall
P R E L I M I N A R Y
Product Specification
Electrical Characteristics
Min
Min
Min
2.0
2.8
2.5
1.6
1.8
—
eZ80F91 MCU
Delay (ns)
Delay (ns)
Delay (ns)
Max
Max
Max
9.3
7.1
6.5
4.6
4.3
—
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