EZ80F920120MOD Zilog, EZ80F920120MOD Datasheet - Page 69

• 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

PS015308-0404
Intel Bus Mode
Figure 10.Example: Z80 Bus Mode Write Timing
Chip selects configured for Intel bus mode modify the CPU bus signals to duplicate a four-
state memory transfer similar to that found on Intel-style microcontrollers. The bus signals
and eZ80F92 device pins are mapped as illustrated in Figure 11. In Intel bus mode, the
user can select either multiplexed or nonmultiplexed address and data buses. In nonmulti-
plexed operation, the address and data buses are separate. In multiplexed operation, the
lower byte of the address, ADDR[7:0], also appears on the data bus, DATA[7:0], during
State T1 of the Intel bus mode cycle. During multiplexed operation, the lower byte of the
address bus also appears on the address bus in addition to the data bus.
System Clock
ADDR[23:0]
DATA[7:0]
or IORQ
MREQ
WAIT
CSx
WR
RD
T1
P R E L I M I N A R Y
T2
T
CLK
T3
Chip Selects and Wait States
Product Specification
eZ80F92/eZ80F93
57