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HT9320 Datasheet(PDF) 9 Page - Holtek Semiconductor Inc

Part # HT9320
Description  22-Memory Tone/Pulse Dialer
PDF  30 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT9320 Datasheet(HTML) 9 Page - Holtek Semiconductor Inc

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Symbol
Parameter
Test Conditions
Min.
Typ.
Max. Unit
VDD
Conditions
TFP
Pause Time After Flash
¾
Control key
¾
0.2
¾
s
Digit key
¾
1
¾
s
TRP
Pause Time for One-key
Redialing
¾
One-key redialing
¾
1
¾
s
TDB
Key-in Debounce Time
¾¾
¾
20
¾
ms
TBRK
Break Time for One-key
Redialing
¾
One-key redialing
¾
1.2
¾
s
fOSC
System Frequency
¾
Crystal=3.5795MHz 3.5759 3.5795 3.5831 MHz
Pulse Mode Electrical Characteristics
fOSC=3.5795MHz, Ta=25°C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max. Unit
VDD
Conditions
IPOH
PO Output Source
Current
2.5V VOH=2V
-0.2
¾¾
mA
IPOL
PO Output Sink
Current
2.5V VOL=0.5V
0.2
0.6
¾
mA
PR
Pulse Rate
¾
MODE pin is connected to VDD
¾
10
¾
pps
MODE pin is opened
¾
20
¾
M/B
Make/Break Ratio
¾
A resistor is linked between
R2 and C1 (HT9320B/C/K/L)
¾
33:66
¾
%
M/B=VSS (HT9320A)
M/B=VDD (HT9320H)
No resistor is linked between
R2 and C1 (HT9320B/C/K/L)
¾
40:60
¾
M/B=Floating (HT9320A)
M/B=VSS (HT9320H)
TPDP
Pre-digit-pause
Time
¾
M/B ratio=40:60
¾
40 (10pps)
20 (20pps)
¾
ms
M/B ratio=33:66
¾
33 (10pps)
17 (20pps)
¾
HT9320
9
July 21, 1999



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