Zilog Z80180 - Manual (Page 299)

Z8018x
Family MPU User Manual
UM005003-0703
283
Note: If Bus Request and Refresh Request occur simultaneously,
Bus Request is accepted but Refresh Request is cleared.
OPERATION MODE TRANSITION
NORMAL *1
HALT
SLEEP
IOSTOP
SYSTEM
STOP
RESET
IO
S
T
O
P
=
1
IO
S
T
O
P
=
0
RESET = 0
RE
SE
T =
0
RE
SE
T =
0
R
ES
ET
=
0
RES
ET =
0
RE
SET
= 0
HALT I
nstruct
ion
Interr
upt
S
LP
In
str
uc
tio
n
In
te
rru
pt
SLP I
nstru
ction
Interr
upt