HT9320 Ver la hoja de datos (PDF) - Holtek Semiconductor
Número de pieza
componentes Descripción
Fabricante
HT9320 Datasheet PDF : 29 Pages
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HT9320 Series
Functional Description
Keyboard matrix
C1~C8 and R1~R5 form a keyboard matrix. Together
with a standard 5´8 keyboard, the keyboard matrix is
used for dialing entries. In addition, the keyboard matrix
also provides resistor options for different dialing specifi-
cation selections. The keyboard arrangement for the
HT9320 series are shown in the Keyboard Informa-
tion.
Tone frequency
Tone
Name
Output
Frequency (Hz)
Specified Actual
R2
697
699
R3
770
766
R4
852
847
R5
941
948
C1
1209
1215
C2
1336
1332
C3
1477
1472
% Error
+0.29%
-0.52%
-0.59%
+0.74%
+0.50%
-0.30%
-0.34%
Note: % Error does not contain the crystal frequency drift
Dialing specification selection
Various dialing specifications can be selected by adding
resistors across keyboard matrix pins. The allowable
option resistor connections are shown on the table.
C1 C2 C3 C4 C5 C6 C7
R1
R2
R K 21 R K 31 R K 41 R K 51 R K 61 R K 71
R K 12
R3
R K 13
R4
R K 14
All the resistors are 330kW. The resistor option functions
and the default specifications (without option resistors)
are listed below (HT9320A/B/C/K/L).
Option
Resistor
Option
Function
RK12
Ratio
(HT9320B/C/K/L) Selection
RK13
RK14
Flash
Function/
Time Selection
RK21
Pause & P®T
Duration
Selection
RK31
RK41
Pulse Number
Selection
RK51
(HT9320A /B/C/K)
Inter-digit-
Pause Time for
10pps
RK51
RK61
RK71
(HT9320L)
International
Direct Dialing
Lock Selection
Default
(No Resistor)
40:60
Flash=control
function
Flash
time=600ms
TP= 3.6s
TP®T= 3.6s
N
800ms
Normal dialing
(unlock)
M/B ratio selection table
· HT9320A
M/B Pin
VSS
Floating
· HT9320B/C/K/L
RK12
No
Yes
· HT9320H
M/B Pin
VDD
VSS
M/B Ratio (%)
33.3:66.6
40:60
M/B Ratio (%)
40:60
33.3:66.6
M/B Ratio (%)
33.3:66.6
40:60
Rev. 1.10
9
October 1, 2002
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