Z86E0812PSC View Datasheet(PDF) - Zilog
Part Name
Description
MFG CO.
'Z86E0812PSC' PDF : 44 Pages View PDF
Z86E04/E08
CMOS Z8 OTP 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).
Z86E04
and
Z86E08
Port 3
0 = Digital
R247 = P3M 1 = Analog
D1
PAD
+
P31 (AN1)
-
DIG.
AN.
PAD
P32 (AN2)
+
PAD
-
P33 (REF)
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
22
PRELIMINARY
DS97Z8X0401
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