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ZGP323H Datasheet(PDF) 30 Page - Zilog, Inc.

Part No. ZGP323H
Description  Programmable input glitch filter for pulse reception
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Maker  ZILOG [Zilog, Inc.]
Homepage  http://www.zilog.com
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ZGP323H Datasheet(HTML) 30 Page - Zilog, Inc.

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ZGP323H
Product Specification
PS023803-0305
Pin Functions
22
Figure 12. Port 3 Configuration
Two on-board comparators process analog signals on P31 and P32, with refer-
ence to the voltage on Pref1 and P33. The analog function is enabled by program-
ming the Port 3 Mode Register (bit 1). P31 and P32 are programmable as rising,
falling, or both edge triggered interrupts (IRQ register bits 6 and 7). Pref1 and P33
are the comparator reference voltage inputs. Access to the Counter Timer edge-
detection circuit is through P31 or P20 (see “T8 and T16 Common Functions—
-
Z8 GP
OTP
Port 3 (I/O)
P32 (AN2)
P31 (AN1)
Pref1
From Stop Mode Recovery Source of SMR
P33 (REF2)
IRQ2, P31 Data Latch
Pref1/P30
P31
P32
P33
P34
P35
P36
P37
D1
1 = Analog
0 = Digital
R247 = P3M
+
-
+
IRQ0, P32 Data Latch
IRQ1, P33 Data Latch
Comp
1
Comp2
Dig.
An.


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