EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 368

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

Figure 64. External Memory Read Timing
PS019209-0504
ADDR[23:0]
External Memory Read Timing
DATA[7:0]
MREQ
(input)
CSx
PHI
RD
Figure 64 and Table 236 diagram the timing for external memory reads.
Table 236. External Memory Read Timing
Parameter
T
T
T
T
T
T
T
T
1
2
3
4
5
6
7
8
Abbreviation
PHI Clock Rise to ADDR Valid Delay
PHI Clock Rise to ADDR Hold Time
Input DATA Valid to PHI Clock Rise Setup Time
PHI Clock Rise to DATA Hold Time
PHI Clock Rise to CSx Assertion Delay
PHI Clock Rise to CSx Deassertion Delay
PHI Clock Rise to MREQ Assertion Delay
PHI Clock Rise to MREQ Deassertion Delay
T
T
7
9
T
1
T
5
P R E L I M I N A R Y
T
CLK
T
3
T
T
2
T
T
8
10
8
T
Product Specification
4
Electrical Characteristics
Min.
2.2
0.2
0.9
2.6
2.4
2.6
2.3
—
eZ80F91 MCU
Delay (ns)
Max.
10.8
6.8
8.8
7.0
6.3
—
—
—
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