HT9302C Holtek, HT9302C Datasheet

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HT9302C

Manufacturer Part Number
HT9302C
Description
1-memory/2-memory tone/pulse dialer
Manufacturer
Holtek
Datasheet
Features
General Description
The HT9302 series tone/pulse dialers are CMOS LSIs
for telecommunication systems. They are designed to
meet various dialing specifications through resistor op-
tion matrix.
The HT9302 series provide the pin-selected lock func-
Selection Table
Rev. 1.20
Part No.
HT9302x
HT9302A
HT9302B
HT9302C
HT9302D
HT9302G
HT9302G
Universal specification
Operating voltage: 2.0V~5.5V
Low standby current
Low memory retention current: 0.1 A (typ.)
Tone/pulse switchable
Interface with LCD driver
32 digits for redialing
32 digits for SA memory dialing
One-key redialing
Pause and P T key for PBX
4 4 keyboard matrix
3.58MHz crystal or ceramic resonator
Function
(Pin Selection)
Lock Function
Patent Number: 64097, 86474, 64529, 113235 (R.O.C.)
1-Memory/2-Memory Tone/Pulse Dialer
Hold Line
5424740 (U.S.A.)
1
(Normal version)
(Simple version)
tion, Hold-line, Hand-free and LCD dialing number
display interface, all of which are suitable for feature
phone applications. HT9302G is simpler than HT9302X
version. It provides only a redialing memory for simple
low-cost system applications.
Hand Free
Hand-free control
Hold-line control
Pause, P T can be saved for redialing
Lock function
Resistor options
HT9302A: 18-pin DIP package
HT9302B: 22-pin SKDIP package
HT9302C: 20-pin DIP package
HT9302D: 24-pin SKDIP package
HT9302G: 16-pin DIP package
M/B ratio
Flash function and flash time
Pause and P T duration
Pulse number
LCD Interface
HT9302 Series
September 30, 2002
18 DIP
22 SKDIP
20 DIP
24 SKDIP
16 DIP
Package

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HT9302C Summary of contents

Page 1

... Pause and P T duration Pulse number HT9302A: 18-pin DIP package HT9302B: 22-pin SKDIP package HT9302C: 20-pin DIP package HT9302D: 24-pin SKDIP package HT9302G: 16-pin DIP package tion, Hold-line, Hand-free and LCD dialing number display interface, all of which are suitable for feature phone applications ...

Page 2

Block Diagram Pin Assignment HT9302x normal version HT9302G simple version Rev. 1.20 HT9302 Series 2 September 30, 2002 ...

Page 3

Keyboard Information Pin Description Internal Pin Name I/O Connection These pins form keyboard matrix which can perform keyboard input detec- tion and dialing specification setting functions. When on-hook (HKS=high) all the pins are set high. While off-hook ...

Page 4

Internal Pin Name I/O Connection This pin is active only when the chip transmits tone dialing signals. Otherwise, it DTMF O CMOS OUT always outputs a low. The pin outputs tone signals to drive the external trans- mitter amplifier circuit. ...

Page 5

Absolute Maximum Ratings Supply Voltage ........................................... 0. Input Voltage .............................. V 0 Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may cause substantial damage to the device. Functional ...

Page 6

Pulse Mode Electrical Characteristics Symbol Parameter Output Source Current 2.5V V POH I 2. Output Sink Current POL PR Pulse Rate M/B Make/Break Ratio t Pre-digit-pause Time PDP t Inter-digit-pause Time IDP t Pulse ...

Page 7

Functional Description Keyboard matrix C1~C4 and R1~R4 form a keyboard matrix. Together with a standard 4 4 keyboard, the keyboard matrix is used for dialing entries. In addition, the keyboard ma- trix provides resistor option for different dialing specifi- cation ...

Page 8

Pulse number table Keypad Output Pulse Number New Sweden/ Zealand Digit Key Normal N Denmark (N+1) (10- ...

Page 9

LOCK function The function aims to detect locked dialing number to prevent a long distance call. The dialing output of the chip is disabled if the first input key after on-off-hook is the locked number when the lock function is ...

Page 10

Keyboard operation The following operations are described under an on-off- hook or on-hook condition with the hand-free active condition. Rev. 1.20 HT9302 Series 10 September 30, 2002 ...

Page 11

Rev. 1.20 HT9302 Series 11 September 30, 2002 ...

Page 12

Rev. 1.20 HT9302 Series 12 September 30, 2002 ...

Page 13

Timing Diagrams Normal dialing Pulse mode Tone mode Rev. 1.20 HT9302 Series 13 September 30, 2002 ...

Page 14

Dialing with pause key Pulse mode Tone mode Rev. 1.20 HT9302 Series 14 September 30, 2002 ...

Page 15

Flash key operation Pulse Tone operation Rev. 1.20 HT9302 Series 15 September 30, 2002 ...

Page 16

One key redial operation CLOCK & DOUT operation Rev. 1.20 HT9302 Series 16 September 30, 2002 ...

Page 17

Application Circuits Application circuit 1 Rev. 1.20 HT9302 Series 17 September 30, 2002 ...

Page 18

Application circuit 2 Rev. 1.20 HT9302 Series 18 September 30, 2002 ...

Page 19

Application circuit 3 Rev. 1.20 HT9302 Series 19 September 30, 2002 ...

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Application circuit 4 Rev. 1.20 HT9302 Series 20 September 30, 2002 ...

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Application circuit 5 Rev. 1.20 HT9302 Series 21 September 30, 2002 ...

Page 22

Package Information 16-pin DIP (300mil) outline dimensions Symbol Min. A 745 B 240 C 125 D 125 295 I 335 0 Rev. 1.20 HT9302 Series Dimensions in mil Nom. Max. 775 260 135 145 ...

Page 23

DIP (300mil) outline dimensions Symbol Min. A 895 B 240 C 125 D 125 295 I 335 0 Rev. 1.20 HT9302 Series Dimensions in mil Nom. Max. 915 260 135 145 20 70 ...

Page 24

DIP (300mil) outline dimensions Symbol Min. A 1020 B 240 C 125 D 125 295 I 335 0 Rev. 1.20 HT9302 Series Dimensions in mil Nom. Max. 1045 260 135 145 20 70 ...

Page 25

SKDIP (300mil) outline dimensions Symbol Min. A 1085 B 253 C 125 D 125 295 I 330 0 Rev. 1.20 HT9302 Series Dimensions in mil Nom. Max. 1105 263 135 145 20 70 ...

Page 26

SKDIP (300mil) outline dimensions Symbol Min. A 1235 B 255 C 125 D 125 295 I 345 0 Rev. 1.20 HT9302 Series Dimensions in mil Nom. Max. 1265 265 135 145 20 70 ...

Page 27

... Copyright Ó 2002 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek as- sumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek¢ ...

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