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HT9201B 데이터시트(PDF) 5 Page - Holtek Semiconductor Inc

부품명 HT9201B
상세설명  Simple Tone Dialer
PDF  7 Pages
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제조업체  HOLTEK [Holtek Semiconductor Inc]
홈페이지  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT9201B 데이터시트(HTML) 5 Page - Holtek Semiconductor Inc

  HT9201B Datasheet HTML 1Page - Holtek Semiconductor Inc HT9201B Datasheet HTML 2Page - Holtek Semiconductor Inc HT9201B Datasheet HTML 3Page - Holtek Semiconductor Inc HT9201B Datasheet HTML 4Page - Holtek Semiconductor Inc HT9201B Datasheet HTML 5Page - Holtek Semiconductor Inc HT9201B Datasheet HTML 6Page - Holtek Semiconductor Inc HT9201B Datasheet HTML 7Page - Holtek Semiconductor Inc  
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Timing Diagrams
Functional Description
Keyboard matrix
C1~C4 and R1~R4 form a keyboard matrix. The
keyboard arrangement for each of the HT9201
series are shown in the Keyboard Information.
Tone frequency
Tone
Name
Output
Frequency (Hz)
% Error
Specified
Actual
R1
697
699
+0.29%
R2
770
766
–0.52%
R3
852
847
–0.59%
R4
941
948
+0.74%
C1
1209
1215
+0.50%
C2
1336
1332
–0.30%
C3
1477
1472
–0.34%
C4
1633
1645
+0.73%
Note: % Error does not contain the crystal frequency
drift
Key definition
• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ∗, #, A, B, C, D keys
These are the dialing number input keys for
normal operation.
• F1, F2, F3, F4
The flash keys can be selected with different
flash times as shown in the following table.
Flash time selection table
Key
Flash Time (ms)
F1
600
F2
300
F3
200
F4
90
Keyboard operation
HT9201A/B
5
3rd Dec ’97



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