Z80 Datasheet, PDF (188/330 Pages) Zilog, Inc. – Z80 CPU PERIPHERALS

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CLOCK
INT
A7–A0
M1
MREQ
IORQ
DATA
BUS
WAIT
RD
Last M Cycle
M1
of Instruction
Last T State
T₁
T₂
T_W
T_W
T₃
PC
Refresh
IN
Figure 75. Interrupt Acknowledge
UM008101-0601
Direct Memory Access