EZ80F920120MOD Zilog, EZ80F920120MOD Datasheet - Page 80

• Manufacturer Part Number: EZ80F920120MOD
• Description: MODULE EZ80F92 512K 20MHZ
• Manufacturer: Zilog

Specifications of EZ80F920120MOD

• Module/board Type: Development Module
• Processor Series: EZ80F92x
• Core: eZ80
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 1 MB
• Interface Type: Cable
• Maximum Clock Frequency: 20 MHz
• Operating Supply Voltage: 0 V to 3.3 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP
• Development Tools By Supplier: eZ80F920200ZCOG
• Minimum Operating Temperature: 0 C
• For Use With/related Products: eZ80F92
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3157; EZ80F920120MOD

Figure 18.Example: Motorola Bus Mode Write Timing
PS015308-0404
System Clock
ADDR[23:0]
DATA[7:0]
or IORQ
DTACK
MREQ
CSx
R/W
DS
AS
Switching Between Bus Modes
Each time the bus mode controller must switch from one bus mode to another, there is a
one-cycle CPU system clock delay. An extra clock cycle is not required for repeated
access in any of the bus modes; nor is it required when the eZ80F92 device switches to
eZ80 bus mode. The extra clock cycles are not shown in the timing examples. Due to the
asynchronous nature of these bus protocols, the extra delay does not impact peripheral
communication.
S0
S1
P R E L I M I N A R Y
S2
S3
S4
S5
Chip Selects and Wait States
Product Specification
S6
eZ80F92/eZ80F93
S7
68