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Z8018010FSC Datasheet(PDF) 16 Page - Zilog, Inc.

Part # Z8018010FSC
Description  ENHANCED Z180 MICROPROCESSOR
PDF  70 Pages
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Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z8018010FSC Datasheet(HTML) 16 Page - Zilog, Inc.

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Z80180/Z8S180/Z8L180
Enhanced Z180 Microprocessor
Zilog
1-16
P R E L I M I N A R Y
DS971800401
IOC. This bit controls the timing of the /IORQ and /RD sig-
nals. It is set to 1 by reset.
When /IOC=1, the /IORQ and /RD signals function the
same as the Z64180 (Figure 11).
When /IOC = 0, the timing of the /IORQ and RD signals
match the timing of the Z80. The /IORQ and /RD signals
go active as a result of the rising edge of T2. (Figure 12.)
Figure 10. M1 Temporary Enable Timing
T1
T2
T3
T1
T2
T3
φ
/WR
/M1
Opcode Fetch
Write into OMCR
Figure 11. I/O Read and Write Cycles with IOC = 1
T1
T2
TW
T3
φ
/IORQ
/RD
/WR
Figure 12. I/O Read and Write Cycles with IOC = 0
T1
T2
TW
T3
φ
/IORQ
/RD
/WR



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