Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

ZGP323H Datasheet(PDF) 60 Page - Zilog, Inc.

Part No. ZGP323H
Description  Programmable input glitch filter for pulse reception
Download  107 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ZILOG [Zilog, Inc.]
Homepage  http://www.zilog.com
Logo 

ZGP323H Datasheet(HTML) 60 Page - Zilog, Inc.

Zoom Inzoom in Zoom Outzoom out
 60 / 107 page
background image
ZGP323H
Product Specification
PS023803-0305
Functional Description
52
When more than one interrupt is pending, priorities are resolved by a programma-
ble priority encoder controlled by the Interrupt Priority Register. An interrupt
machine cycle activates when an interrupt request is granted. As a result, all sub-
sequent interrupts are disabled, and the Program Counter and Status Flags are
saved. The cycle then branches to the program memory vector location reserved
for that interrupt. All ZGP323H interrupts are vectored through locations in the
program memory. This memory location and the next byte contain the 16-bit
address of the interrupt service routine for that particular interrupt request. To
accommodate polled interrupt systems, interrupt inputs are masked, and the Inter-
rupt Request register is polled to determine which of the interrupt requests require
service.
An interrupt resulting from AN1 is mapped into IRQ2, and an interrupt from AN2 is
mapped into IRQ0. Interrupts IRQ2 and IRQ0 can be rising, falling, or both edge
triggered. These interrupts are programmable by the user. The software can poll
to identify the state of the pin.
Programming bits for the Interrupt Edge Select are located in the IRQ Register
(R250), bits D7 and D6. The configuration is indicated in Table 20.
Table 19. Interrupt Types, Sources, and Vectors
Name
Source
Vector Location
Comments
IRQ0
P32
0,1
External (P32), Rising, Falling Edge Triggered
IRQ1
P33
2,3
External (P33), Falling Edge Triggered
IRQ2
P31, TIN 4,5
External (P31), Rising, Falling Edge Triggered
IRQ3
T16
6,7
Internal
IRQ4
T8
8,9
Internal
IRQ5
LVD
10,11
Internal
Table 20. IRQ Register
IRQ
Interrupt Edge
D7
D6
IRQ2 (P31)
IRQ0 (P32)
00
F
F
01
F
R
10
R
F
11
R/F
R/F
Note: F = Falling Edge; R = Rising Edge


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54  55  56  57  58  59  60  61  62  63  64  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90  91  92  93  94  95  96  97  98  99  100   ...More


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn