Z86L0408PSC View Datasheet(PDF) - Zilog
Part Name
Description
MFG CO.
'Z86L0408PSC' PDF : 26 Pages View PDF
Z86L04/L08
Z8 8-Bit Cost-Effective Microcontrollers
Zilog
PIN FUNCTIONS (Continued)
Port 3, P33-P31. Port 3 is a 3-bit, CMOS, compatible port
with three fixed input (P33-P31) lines. These three input
lines can be configured under software control as digital
Schmitt-trigger inputs or analog inputs.
These three input lines are also used as the interrupt
sources IRQ0-IRQ3 and as the timer input signal TIN (Fig-
ure 9).
Z8
Port 3
PAD
P31 (AN1)
PAD
P32 (AN2)
PAD
P33 (REF)
0 = Digital
R247 = P3M 1 = Analog
D1
DIG.
+
AN.
-
+
-
TIN
P31 Data Latch
IRQ2
IRQ3
P32 Data Latch
IRQ0
P33 Data Latch
Vcc
IRQ1
IRQ 0,1,2 = Falling Edge Detection
IRQ3 = Rising Edge Detection
Figure 9. Port 3 Configuration
12
PRELIMINARY
DS97LVO0901
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