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ZGP323H Datasheet(PDF) 58 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) 58 Page - Zilog, Inc.

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ZGP323H
Product Specification
PS023803-0305
Functional Description
50
During PING-PONG Mode
The enable bits of T8 and T16 (CTR0, D7; CTR2, D7) are set and cleared alter-
nately by hardware. The timeout bits (CTR0, D5; CTR2, D5) are set every time the
counter/timers reach the terminal count.
Interrupts
The ZGP323H features six different interrupts (Table 19). The interrupts are
maskable and prioritized (Figure 30). The six sources are divided as follows: three
sources are claimed by Port 3 lines P33–P31, two by the counter/timers
(Table 19) and one for low voltage detection. The Interrupt Mask Register (globally
or individually) enables or disables the six interrupt requests.
The source for IRQ is determined by bit 1 of the Port 3 mode register (P3M).
When in digital mode, Pin P33 is the source. When in analog mode the output of
the Stop mode recovery source logic is used as the source for the interrupt. See
Figure 35, Stop Mode Recovery Source, on page 59.


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