z86d73 ZiLOG Semiconductor, z86d73 Datasheet - Page 29

• Manufacturer Part Number: z86d73
• Description: 40/44/48-pin Low-voltage
• Manufacturer: ZiLOG Semiconductor

PS019402-1103
From Stop-Mode Recovery Source of SMR
Port 3 (P37–P31)
Port 3 is a 7-bit, CMOS-compatible fixed I/O port (see Figure 13). Port 3 consists
of three fixed input (P33–P31) and four fixed output (P37–P34), which can be con-
figured under software control for interrupt and as output from the counter/timers.
P31, P32, and P33 are standard CMOS inputs; P34, P35, P36, and P37 are push-
pull outputs.
Figure 13. Port 3 Configuration
P31 (AN1)
Pref
P32 (AN2)
P33 (REF2)
Z86D73
OTP
P
+
-
+
-
R
E
Comp2
Comp1
L
R247 = P3M
I
Dig.
An.
M
I
Pref1
P31
P32
P33
P34
P35
P36
P37
N
A
40/44/48-Pin Low-Voltage IR OTP
R
D1
Port 3 (I/O)
Y
1 = Analog
0 = Digital
IRQ2, P31 Data Latch
IRQ0, P32 Data Latch
IRQ1, P33 Data Latch
Z86D73
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