
Z8018x
Family MPU User Manual
78
UM005003-0703
Figure 38. INT0
Mode 1 Timing
INT0 Mode 2
This method determines the restart address by reading the contents of a
table residing in memory. The vector table consists of up to 128 two-byte
restart addresses stored in low byte, high byte order.
Phi
A0
–
A19
WR
RD
MREQ
D0
–
D7
M1
PCH
PCL
PC
SP-1
SP-2
0038H
INT0
T1 T3TW* T2T1T2 T3 T1T2 T3 T1T2 T3TW*
Last MC
PC is pushed onto stack
Op Code Fetch Cycle
INT0
Acknowledge Cycle
*Two Wait States are automatically inserted
ST
IORQ
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