ZiLOG Z8 Series

Z8
®
CPU
User Manual
UM001604-0108 Power-Down Modes
114
If P31, P32, or P33 are to be used for a SMR source, the digital mode of operation must be
selected prior to entering STOP mode.
Figure 104. Stop Mode Recovery Source
SMR D4 D3 D2
0 0 0
SMR D4 D3 D2
0 0 1
0 1 0
0 1 1
SMR D4 D3 D2
1 0 0
SMR D4 D3 D2
1 0 1
SMR D4 D3 D2
1 1 0
SMR D4 D3 D2
1 1 0
V
DD
P20
P23
P20
P27
P30
P33
P27
P31
P32
MUX
To POR
RESET
To P33 Data
Latch and IRQ
1
Stop Mode Recovery Edge
Select (SMR)
P33 From Pads
Digital/Analog Mode
Select (P3M)