EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 118

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

Figure 19. Memory Interface Bus Operation During CPU Bus Cycles, Normal Operation
Figure 20. Memory Interface Bus Operation During Bus Acknowledge Cycles
PS019209-0504
eZ80F91 MCU
Normal bus operation of the eZ80F91 device using CS0 to communicate to an
external peripheral is shown in Figure 19. Figure 20 shows an external bus mas-
ter communicating with an external peripheral during bus acknowledge cycles.
External
Master
MREQ
MREQ
IORQ
IORQ
P R E L I M I N A R Y
Chip Select
Chip Select
Wait State
Wait State
Generator
Generator
eZ80F91
eZ80F91
ADDRESS
ADDRESS
WAIT
DATA
DATA
WAIT
WR
WR
RD
RD
CS0
CS1
CS2
CS3
CS0
CS1
CS2
CS3
Peripheral
Peripheral
Product Specification
External
External
eZ80F91 MCU
Bus Arbiter
99