Z8L180 ZILOG [Zilog, Inc.], Z8L180 Datasheet - Page 92
Z8L180
Manufacturer Part Number
Z8L180
Description
Z8018x Family MPU
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.Z8L180.pdf
(326 pages)
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disabling all maskable interrupts. The interrupt service routine normally
terminates with the EI (Enable Interrupts) instruction followed by the
RETI (Return from Interrupt) instruction, to reenable the interrupts.
Figure 37 depicts the use of INT0 (Mode 1) and RETI for the Mode 1
interrupt sequence.
Figure 37.
Figure 38 illustrates INT0 Mode 1 Timing.
(Mode 1)
INT0
INT0 Mode 1 Interrupt Sequence
Program
Main
PCL
PCH
PCH
0
PCL
(SP)
(SP+1)
(SP-2)
(SP-1)
EF1, EF2
0038H
M PU Us e r M anual
RETI
UM005001-ZMP0400
E1 (1
Z 8018x Fam il y
INT0 (Mode 1)
Interrupt Service
Program
1EF1, 1EF2)
77
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