Datasheet HT9320A, HT9320B, HT9320C, HT9320H, HT9320K Datasheet (Holtek Semiconductor Inc)

HT9320 Series

22-Memory Tone/Pulse Dialer

Features

Universal specification

·

Operating voltag0e: 2.0V~5.5V

·

Low standby current

·

Lowmemoryretentioncurrent:0.1mA(typ.)

·

Tone/pulse switchable

·

Interface with LCD driver

·

32 digits for redialing

·

32 digits for the SA memory dialing

·

One-key redialing

·

Pause and P®T key for PBX

·

3.58MHz crystal or ceramic resonator

·

Hand-free control

·

Patent Number: 64097, 86474, 113235(R.O.C.), 5424740(U.S.A.)

General Description

The HT9320 series tone/pulse dialers are
CMOS LSI for telecommunication systems.
They are designed to meet various dialing spec
ifications through resistor option matrix.

The HT9320 series are offered in six different
versions. The different functions of the six ver­sions are listed in the selection table. The
HT9320A, HT9320H versions provide the
on-hook store function; the HT9320B version
provides the LCD interface function; the
HT9320K version provides the keytone func­tion; the HT9320L version provides both the

Hold-line control

·

Pause, P®T can be saved for redialing

·

On-hook store function

·

Keytone function

·

Lock function

·

Resistor options

·

-

M/B ratio

-

Flash function and flash time

-

Pause and P®T duration

-

Pulse number

-

Inter-digit pause time for 10pps

Memory number: 22 memories

·

LCD interface function and IDD lock function.
The six versions also supply the hold-line and
hand-free functions, which are suitable for feature

­phone applications.

HT9320 series provide SA, Redial and 20
one-touch/two-touch memory dialing. If the
keyboard includes M1~M20 keys it can be used
as one-touch memory dialing. Otherwise, it
works as two-touch (PAGE®M1~M10) or
three-touch(A®PAGE ®0~9) memory dialing
for speed dialing in either pulse or tone mode.

1 July 21, 1999

Selection Table

Function

Part No.

HT9320A

HT9320B

HT9320C

HT9320H

HT9320K

HT9320L

HT9320L-X

Memory

Hold-

Dialing

Line

SA, R

M1~M20

SA, R

M1~M20

SA, R

M1~M20

SA, R

M1~M20

SA, R

M1~M20

SA, R

M1~M20

The same as HT9320L, but the voltage polarity of the row group and the column group are reversed.

Pin Assignment

Hand-

LCD

Free

Interface

ÖÖ ¾

ÖÖ Ö

¾¾ ¾

ÖÖ ¾

ÖÖ ¾

ÖÖ Ö

Pulse

No.

N+1

10-N

N+1

10-N

N+1

10-N

N+1

10-N

N+1

10-N

Tone

Dura

­tion
(ms)

82.5 85.5

82.5 85.5

82.5 85.5

82.5 85.5

82.5 85.5

Flash

Function

Control 600 N,

Digit 600/300/98

Control 600 N,

Digit 600/300/98

Control 600 N,

Digit 600/300/98

Digit 600/100 N 82.5 82.5

Control 600 N,

Digit 600/300/98

Control 600 N,

Digit 600/300/98

Flash

Time

(ms)

Inter­Tone­Pause

(ms)

HT9320

Key-

M/B

IDD

Pin

Lock

Ö¾¾Ö

¾¾¾¾

¾¾¾¾

Ö¾¾Ö

¾¾ Ö ¾

¾Ö¾¾

Tone

Output

On­Hook
Store

Package

28 DIP

28 DIP

22SKDIP

28 DIP

28 DIP

28 DIP

C8

HST

R1

R2

R3

R4

R5

HKS

M/B

HFI

MODE

X1

X2

VDD

28

1

27

2

26

3

25

4

24

5

23

6

22

7

21

8

20

9

19

10

18

11

17

12

16

13

15

14

H T 9320A /H

28 D IP

C7

C6

C5

C4

C3

C2

C1

PO

HFO

XM UTE

DTM F

HDI

HDO

VSS

C8

DOUT

R1

R2

R3

R4

R5

HKS

CLOCK

HFI

MODE

X1

X2

VDD

H T 9320B /L/L -X

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28 D IP

C7

28

C6

27

C5

26

C4

25

C3

24

C2

23

C1

22

PO

21

HFO

20

XM UTE

19

DTMF

18

HDI

17

HDO

16

VSS

15

C8

R1

R2

R3

R4

R5

HKS

MODE

X1

X2

VDD

1

2

3

4

5

6

7

8

9

10

11

C7

22

C6

21

C5

20

C4

19

C3

18

C2

17

C1

16

PO

15

XM UTE

14

DTMF

13

VSS

12

H T 9320C

22 S K D IP

C8

KT

R1

R2

R3

R4

R5

HKS

NC

HFI

MODE

X1

X2

VDD

1

2

3

4

5

6

7

8

9

10

11

12

13

14

H T 9320K

28 D IP

C7

28

C6

27

C5

26

C4

25

C3

24

C2

23

C1

22

PO

21

HFO

20

XM UTE

19

DTMF

18

HDI

17

HDO

16

VSS

15

2 July 21, 1999

Block Diagram

HT9320

HST

C1

C8

R1

R5

X1

X2

Key

Colum n

Key Row

D ivider

FSM

Key
Function
Encoder

Encoder

D ebounce

Clock

G enerator

C ontrol

WRM

C ounter

ADDRL

Keytone

Circuit

M/B

M/B

KT

SRAM

Flash

Tim er

C heck

Tone

Encoder

C onverter

M ode In

Tone

Out

Pulse

Out

HD/HF

DOUT

CLOCK

DTM F

PO

XM U TE

HKS
HFI

HDI

HDO

HFO
MODE

3 July 21, 1999

Keyboard Information

HT9320A/B/C/K/L HT9320H

· O ne-touch m em ory keyboard

C1

C2 C3 C4 C5 C7 C8C6

R1

R2

R3

R4

R5

SA

*/T

P

F

3

2

1

6

5

4

ST

9

8

7

R

#

0

M1

M2

M3

M4

M5

M6

M7

M8

M9

M10

M11

M12

M13

M14

M15

M16

M17

M18

M19

M20

· O n e-tou ch m em ory k eyb oard

R1

R2

R3

R4

R5

C1

C2 C3 C4 C5 C7 C8C6

SA

1

2

4

5

7

8

*

0

P®T

3

6

9

ST

R/P

#

HT9320

M6

M7

M8

M9

M10

M11

M12

M13

M14

M15

M16

M17

M18

M19

M20

M1

M2

F

M3

M4

M5

· T w o-tou ch m em ory k eyboa rd

C1

C2 C3 C4 C5 C6

M6/

ST

M1/

M16

M11

M7/

M2/

F

R

M12

M3/

M13

M4/

M14

M5/

M15

M17

M8/

M18

M9/

M19

M 10/

M20

R1

R2

R3

R4

R5

SA

*/T

P

PAGE

2

1

4

7

3

5

6

8

9

0

#

· T h ree-touch m em ory k eyboard

C1

C2 C3 C4

R1

R2

R3

R4

R5

SA

*/T

P

PAGE

2

1

4

7

3

F

5

6

A

8

9

ST

0

#

R

Memory dialing vs. keyboard form table

Dialing
Output

One-Touch

Memory Keyboard

· T w o-tou ch m em ory k eyboa rd

C1

R1

SA

R2

1

R3

4

7

R4

*

R5

· T h ree-touch m em ory k eyboard

C1

R1

SA

R2

1

R3

4

7

R4

*

R5

Two-Touch

Memory Keyboard

C2 C3 C4 C5 C6

M6/

M1/

P®T

PAGE

2

3

5

6

8

9

0

#

C2 C3 C4

PAGE

2

3

5

6

8

9

0

#

R/P

P®T

R/P

ST

ST

M11

M16

M7/

M2/

F

M12

M17

M8/

M3/

A

M13

M18

M9/

M4/

M14

M19

M 10/

M5/

M15

M20

F

A

Three-Touch

Memory Keyboard

M1~M10 M1 ~ M10 A a (a=1~9, 0)

M11~M20 M11 ~ M20 PAGE Ma (Ma=M1~M10) A PAGE a (a=1~9, 0)

4 July 21, 1999

Pin Description

HT9320

Pin Name I/O

~C8

C1
R1~R5

X1 I

X2 O

XMUTE

HKS

PO

I/O

O NMOS OUT

I CMOS IN

O CMOS OUT

Internal

Connection

CMOS

IN/OUT

OSCILLATOR

Description

These pins form a 5´8 keyboard matrix which can perform
keyboard input detection and dialing specification setting
functions. When on-hook (HKS
While off-hook the column group (C1
row group (R1
For the HT9320L-X, the column group remains high and the
row group is set low for key input detection.
An inexpensive single contact 5´8 keyboard can be used as an
input device. Pressing a key connects a single column to a sin
gle row, and actuates the system oscillator that results in a di
aling signal output. If more than two keys are pressed at the
same time, no response occurs. The key-in debounce time is
20ms. Refer to the keyboard information for keyboard ar
rangement and to the functional description for dialing speci
fication selection.

The system oscillator consists of an inverter, a bias resistor
and the necessary load capacitor on chip. Connecting a stan
dard 3.579545MHz crystal or ceramic resonator to the X1 and
X2 terminals can implement the oscillator function. The oscil
lator is turned off in the standby mode, and is actuated when
ever a keyboard entry is detected.

XMUTE
ing dialing signal transmission. Otherwise, it is an open cir­cuit. XMUTE
transmitting the dial signal.

This pin is used to monitor the status of the hook-switch and its
combination with HFI/HDI
makeorbreaktheline.
HKS

=VDD:On-hookstate(PO=low).ExceptforHFI/HDI

HKS=VSS:Off-hookstate(PO

This pin is a CMOS output structure which by receiving the
HKS

and HFO/HDO signals, control the dialer to connect or
disconnect the telephone line.
PO

outputs a low to break line when HKS is high (on-hook)
and HFO/HDO is low. PO
HKS

is low (off-hook) or HFO is high or HDO is high.
During the off-hook state, this pin also outputs the dialing
pulse train in pulse mode dialing. While in the tone mode, this
pin is always high.

~R5) is set high for key input detection.

is an NMOS open drain structure pulled to VSS dur-

is used to mute the speech circuit when

(hand-free/hold-lineco ntrolinput),other

functionsarealldisabled.

bymodeandreadytoreceivethekeyinput.

=high) all the pins are set high.

~C8) remains low and the

can control the PO pin output to

=high).The chipisinthestand-

outputs a high to make line when

-

-

-

-

-

-

-

5 July 21, 1999

HT9320

Pin Name I/O

MODE I/O

DTMF O CMOS OUT

HDI

HDO O CMOS OUT

HFI I

HFO O CMOS OUT

DOUT O NMOS OUT

Connection

I

Internal

CMOS

IN/OUT

CMOS IN

Pull-high

CMOS IN

Pull-low

Description

This is a three-state input/output pin, used for dialing mode
selection, either Tone mode or Pulse mode, 10pps/20pps
MODE=VDD: Pulse mode, 10pps
MODE=OPEN: Pulse mode, 20pps
MODE=VSS: Tone mode
During the pulse mode dialing, switching this pin to the tone
mode changes the subsequent digit entry to the tone mode.
When the chips are in tone mode, switching to the pulse mode
will also be recognized.

This pin is active only when the chip transmits tone dialing
signals. Otherwise, it always outputs a low. The pin outputs
tone signals to drive the external transmitter amplifier cir
cuit. The load resistor should not be less than 5kW.

This pin is a schmitt trigger input structure. Active low. Ap
plying a negative going pulse to this pin can toggle the HDO out
put once.
An external RC network is recommended for input
debouncing. The pull-high resistance is 200kW typ.

The HDO is a CMOS output structure. Its output is toggle- con
trolled by a negative transition on HDI
high, PO
leased by setting HFO high or by an on-off hook operation or by
another HDI
series melody generator to produce a hold-line background mel­ody. Refer to the functional description for the hold-line func­tion.

This pin is a schmitt trigger input structure. Active high. Ap­plying a positive going pulse to HFI can toggle the HFO once
and hence control the hand-free function.
An external RC network is recommended for input
debouncing. The pull-low resistance of HFI is 200kW typ.

The HFO is a CMOS output structure. Its output is toggle­controlled by a positive transition on the HFI pin. When HFO
is high, the hand-free function is enabled and PO
high to connect the line.
The hand-free function can be released by an on-off-hook oper
ation or by another HFI input or by setting HDO high. Refer to
the functional description for the hand-free function opera
tion.

NMOS open drain output pin. It outputs the BCD code of the
dialing digits to the LCD driver chip (HT16XX series) or mC for
dialing number display. Refer to the functional description for
the detailed timing.

keeps high to hold the line. The hold function can be re

input. The HDO pin can directly drive the HT3810

. When HDO is toggled

outputs a

-

-

-

-

-

-

-

6 July 21, 1999

HT9320

Pin Name I/O

Internal

Connection

NMOS open drain output. When dialing, it outputs a series of

CLOCK O NMOS OUT

pulse trains for DOUT data synchronization. DOUT data is
valid at the falling edge of clock.

VDD I

VSS I

¾

¾

Positive power supply, 2.0V~5.5V for normal operation

Negative power supply

CMOS IN

Pull-low

(HT9320A)

HST I

CMOS IN

(HT9320H)

CMOS IN

Pull-high

(HT9320A)

M/B

I

CMOS IN

(HT9320H)

KT O CMOS OUT

On-hook store enable input
HST=VDD: On-hook store (HT9320A/H)
HST=Floating: Off-hook store (HT9320A)
HST=VSS: Off-hook store (HT9320H)
The Pull-low resistance is 200kW typ.

Make/Break ratio selection
M/B
M/B
M/B
M/B
The pull-high resistance is 200kW typ.

Keytone output pin. Outputs a 1.2kHz tone carrier for 34ms
each time a key is pressed in the pulse mode.

Approximate internal connection circuits

Description

=VSS: 33.3/66.6 (HT9320A)
=Floating: 40/60 (HT9320A)
=VDD: 33.3/66.6 (HT9320H)
=VSS: 40/60 (HT9320H)

CMOS IN/O UT CMOS OUT

VDD

CMOS IN

Pull-low

NMOS OUT

X1

20pF

OSCILLATOR

10M

CMOS IN

VDD

X2

10pF

EN

7 July 21, 1999

CMOS IN

Pull-high

Absolute Maximum Ratings

HT9320

Supply Voltage ................................-0.3V to 6V

Input Voltage .................. V

-0.3 to VDD+0.3V

SS

Storage Temperature ................-50°Cto125°C

Operating Temperature .............-20°Cto75°C

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi

mum Ratings² may cause substantial damage to the device. Functional operation of this device
at other conditions beyond those listed in the specification is not implied and prolonged expo
sure to extreme conditions may affect device reliability.

Electrical Characteristics

Symbol Parameter

V

I

DD

I

STB

V

I

R

V

V

I

XMO

I

OLXM

I

HKS

R

R

R

R

I

OH1

I

OL1

I

OH2

I

OL2

I

OH3

I

OL3

I

OH4

I

OL4

Operating Voltage

DD

Operating Current 2.5V

Standby Current 1V

Memory Retention Voltage

R

Memory Retention Current 1V On-hook

Input Low Voltage

IL

Input High Voltage

IH

XMUTE Leakage Current

XMUTE Sink Current 2.5V

HKS Pin Input Current 2.5V

HFI Pull-low Resistance 2.5V

HFI

HDI Pull-high Resistance 2.5V

HDI

M/B Pull-high Resistance 2.5V

M/B

HST Pull-low Resistance 2.5V

HST

Keypad Pin Source Current 2.5V

Keypad Pin Sink Current 2.5V

HFO Pin Source Current 2.5V

HFO Pin Sink Current 2.5V

HDO Pin Source Current 2.5V

HDO Pin Sink Current 2.5V

KT Pin Source Current 2.5V

KT Pin Sink Current 2.5V

Test Conditions

V

DD

Conditions

¾¾

Pulse

Tone

Off-hook
Keypad entry
No load

On-hook, no load
No entry

¾¾

¾¾
¾¾

XMUTE

XMUTE

=2.5V

HKS

=2.5V

HFI

=0V

HDI

=0V

M/B

=2.5V

HST

=0V

OH

=2.5V

OL

=2V

OH

=0.5V

OL

=2V

OH

=0.5V

OL

=2V

OH

=0.5V

OL

=12V

=0.5V

¾

V
No entry

V

V

V

V

V

V

V

V

V

V

V

V

V

V

f

=3.5795MHz, Ta=25°C

OSC

Min. Typ. Max. Unit

2

¾

¾

¾

0.2 1 mA

0.6 2 mA

¾¾

1

¾

V

0.8V

SS

DD

¾

0.1 0.2

¾
¾

¾¾

1

¾¾
¾¾
¾
¾
¾
¾

200

200

200

200

5.5 V

1

5.5 V

0.2V

DD

V

DD

1

0.1

¾ kW
¾ kW
¾ kW
¾ kW

mA

-4 ¾-40 mA

200 400

-1 ¾¾

1

¾¾

-1 ¾¾

1

¾¾

-1 ¾¾

1

¾¾

¾mA

mA

mA

mA

mA

mA

mA

mA

mA

V

V

mA

mA

-

-

8 July 21, 1999

HT9320

Symbol Parameter

T

T

T

T

f

OSC

FP

RP

DB

BRK

Pause Time After Flash

Pause Time for One-key
Redialing

Key-in Debounce Time

Break Time for One-key
Redialing

System Frequency

Test Conditions

V

DD

¾

¾

¾¾ ¾20¾

¾

¾

Pulse Mode Electrical Characteristics

Symbol Parameter

I

I

POH

POL

PO Output Source
Current

PO Output Sink
Current

PR Pulse Rate

M/B Make/Break Ratio

PDP

Pre-digit-pause
Time

T

V

DD

2.5V

2.5V

¾

¾

¾

Test Conditions

=2V

V

OH

=0.5V

V

OL

MODE pin is connected to V

MODE pin is opened

A resistor is linked between

and C1 (HT9320B/C/K/L)

R2

=VSS (HT9320A)

M/B

M/B

=VDD (HT9320H)

No resistor is linked between
R2

and C1 (HT9320B/C/K/L)

=Floating (HT9320A)

M/B

M/B

=VSS (HT9320H)

M/B ratio=40:60

M/B ratio=33:66

Conditions

Control key

Digit key

One-key redialing

Min. Typ. Max. Unit

¾
¾

¾

0.2

1

1

¾
¾

¾

s

s

s

ms

One-key redialing

¾

1.2

¾

s

Crystal=3.5795MHz 3.5759 3.5795 3.5831 MHz

f

=3.5795MHz, Ta=25°C

OSC

Conditions

Min. Typ. Max. Unit

-0.2 ¾¾

0.2 0.6

DD

¾
¾

¾

10

20

33:66

¾

¾
¾

¾

mA

mA

pps

%

¾

¾

¾

40:60

40 (10pps)
20 (20pps)

33 (10pps)
17 (20pps)

¾

¾

ms

¾

9 July 21, 1999

HT9320

Symbol Parameter

T

T

T

T

F

Inter-digit-pause

IDP

Time

Pulse Make

M

Duration

pulse Break

B

Duration

Keytone Duration

KT

Keytone Carrier

KTC

Test Conditions

V

DD

Conditions

Pulse rate=10pps. No resistor
is linked between R1
(HT9320A/B/C/K)

Pulse rate=10pps (HT9320H/L)

¾

Pulse rate=10pps. A resistor
is linked between R1
(HT9320A/B/C/K)

Pulse rate=20pps

A resistor is linked between
R2

and C1 (HT9320B/C/K/L)

M/B

=VSS (HT9320A)

M/B

¾

=VDD (HT9320H)

No resistor is linked between
R2

and C1 (HT9320B/C/K/L)

M/B

=Floating (HT9320A)

M/B

=VSS (HT9320H)

A resistor is linked between
R2

and C1 (HT9320B/C/K/L)

M/B

=VSS (HT9320A)

M/B

¾

¾
¾

=VDD (HT9320H)

No resistor is linked between
R2

and C1 (HT9320B/C/K/L)

M/B

=Floating (HT9320A)

M/B

=VSS (HT9320H)

Pulse mode (HT9320K)

Pulse mode (HT9320K)

and C5

and C5

Min. Typ. Max. Unit

¾

800

¾

ms

¾

¾

¾

400

500

33 (10pps)
17 (20pps)

¾

¾

¾

ms

¾

¾

40 (10pps)
20 (20pps)

66 (10pps)
33 (20pps)

¾

¾

ms

¾

¾
¾

60 (10pps)
30 (20pps)

34

1.2

¾

¾
¾

ms

kHz

Tone Mode Electrical Characteristics

Symbol Parameter

V

I

TOL

V

R

A

DTMF Output DC Level

TDC

DTMF Sink Current 2.5V

DTMF Output AC Level

TAC

DTMF Output Load 2.5V

L

Column Pre-emphasis 2.5V Row group=0dB 1 2 3 dB

CR

Test Conditions

V

DD

¾¾

¾ Row group, R

f

=3.5795MHz, Ta=25°C

OSC

Min. Typ. Max. Unit

Conditions

0.45V

DD

V

=0.5V

DTMF

=5kW

L

THD£-23dB

10 July 21, 1999

0.1

0.12 0.155 0.18 Vrms

5

0.7V

¾

DD

¾¾

¾¾kW

V

mA

HT9320

Symbol Parameter

Test Conditions

Conditions

R

=5kW¾-30 -23

L

Auto-redial

Auto-redial

THD Tone Signal Distortion 2.5V

T

TMIN

T

ITPM

THD (Distortion) (dB) = 20 log (

Minimum Tone Duration

Minimum Inter-tone Pause

V1 V2 Vn / Vi Vh

22 2 2 2

V

DD

¾

¾

++ +K

Vi, Vh: Row group and column group signals

V1, V2, ... Vn: Harmonic signals (BW=300Hz~3500Hz)

Functional Description

Keyboard matrix

C1

~C8 and R1~R5 form a keyboard matrix. To

gether with a standard 5´8 keyboard, the key
board matrix is used for dialing entries. In
addition, the keyboard matrix also provides resis
tor options for different dialing specification se
lections. The keyboard arrangement for the
HT9320 series are shown in the Keyboard In
formation.

Tone frequency

Tone

Name

R2

R3

R4

R5

C1

C2

C3

Output

Frequency (Hz)

% Error

Specified Actual

697 699 +0.29%

770 766

852 847

941 948 +0.74%

1209 1215 +0.50%

1336 1332

1477 1472

-0.52%

-0.59%

-0.30%

-0.34%

Note: %Errordoesnotcontainthecrystalfrequency

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.

-

-

-

-

-

All the resistors are 330kW. The resistor option
functions and the default specifications (with
outoptionresistors)arelistedbelow(HT9320A/
B/C/K/L).

Min. Typ. Max. Unit

82.5

¾

85.5

¾

)

C1 C2 C3 C4 C5 C6 C7

R1

R2

R

K12

R3

R

K13

R4

R

K14

Option

Resistor

R

K12

(HT9320B/

R

K21

Function

Ratio Selection 40:60

K31RK41

Option

R

K51RK61RK71

(No Resistor)

C/K/L)

R

K13

Flash= control

Flash Function

R

K14

/Time Selection

Flash time=

Pause & P®T

R

K21

Duration
Selection

R

K31

R

K41

R

K51

(HT9320A
/B/C/K)

Pulse Number
Selection

Inter-digit­Pause Time for
10pps

¾

¾

Default

T

= 3.6s

P

T

P®T

N

800ms

dB

ms

ms

R

-

function

600ms

= 3.6s

11 July 21, 1999

HT9320

Option

Resistor

R

K51

R

K61

R

K71

(HT9320L)

Option

Function

International
Direct Dialing
Lock Selection

Default

(No Resistor)

Normal dialing

(unlock)

M/B ratio selection table

·

HT9320A

Pin M/B Ratio (%)

M/B

VSS 33.3:66.6

Floating 40:60

·

HT9320B/C/K/L

R

K12

M/B Ratio (%)

No 40:60

Yes 33.3:66.6

·

HT9320H

Pin M/B Ratio (%)

M/B

VDD 33.3:66.6

VSS 40:60

Flash function/time (duration) selection table

·

HT9320A/B/C/K/L

R

K13

R

K14

Flash

Function

Flash

Time (T

F

No No Control 600ms

No Yes Digit 600ms

Yes No Digit 98ms

Yes Yes Digit 300ms

·

HT9320H

M/B Pin

Flash

Function

Flash Time

)

(T

F

VSS Digit 600ms

VDD Digit 100ms

Pause and P®T duration selection table

·

HT9320A/B/C/K/L

R

K21

TP(sec) T

P®T

(sec)

No 3.6 3.6

Yes 2 1

·

HT9320H

(sec) T

T

P

P®T

(sec)

3.6 3.6

Pulse number selection table

·

HT9320A/B/C/K/L

R

K31

R

K41

Pulse

Number

No No N

No Yes N+1

Yes No 10-N

·

HT9320H

Yes Yes

¾

Pulse Number

N

Inter-digit-pause time for 10pps

·

)

HT9320A/B/C/K

R

K51

Inter-digit pause time

No 800ms

Yes 400ms

·

HT9320H/L

Inter-digit pause time

800ms

12 July 21, 1999

HT9320

Pulse number table

Keypad Output Pulse Number

Digit Key N

10-N

N+1

119 2

228 3

337 4

446 5

555 6

664 7

773 8

882 9

99110

010101

*/T P®TP®TP®T

# Ignored Ignored Ignored

DOUT BCD code

When dialing, the corresponding 4-bit BCD
codes are serially presented on DOUT from
MSB to LSB. The data of DOUT is valid at the
falling edge of the CLOCK pin. The following
table lists the BCD codes corresponding to the
keyboard input.

Key-In BCD Code Key-In BCD Code

1 0001 8 1000

2 0010 9 1001

3 0011 0 1010

4 0100

*/T

1101

5 0101 # 1100

6 0110 F 1011

7 0111 P 1110

On hook store (HT9320A/H)

When the external power supply (2V~5.5V) is
used and the HST pin is connected to VDD, the
user can store dialing numbers to the memories
(M1~M20) during on-hook state.

On/Off hook store selection table

HST Pin Hook Store Mode

VDD (HT9320A/H) On-hook store

Floating (HT9320A) Off-hook store

VSS (HT9320H) Off-hook store

Lock function (HT932L)

This function aims to detect lock dialing num
bers to prevent from an unauthorized long dis
tance call. The dialing output of this chip is
disabled if the first input key after on-off hook is
the lock number when the lock function is en
abled.

International direct dialing lock (IDD lock) se
lection table

R

K51RK61RK71

No No No

Lock Function

Normal dialing without
lock function

No No Yes To lock 0

No Yes

¾

To lock 0, 9

IDD lock operation by the

Yes

¾¾

telephone keyboard.
(See keyboard operation)

Note: ²¾² stands for ²don¢t care²

Hand-free function operation

·

Hand-free function execution
When HFO is low, a rising edge triggers the

HFI, enabling the Hand-free function (HFO
becomes high).

·

Reset Hand-free function
When HFO is high, the Hand-free function is

enabled and can be reset by:

¨

Off-hook

¨

Applying a rising edge to HFI

¨

Changing the HDO pin from low to high

-

-

-

-

13 July 21, 1999

HT9320

·

Hand-free function table

Current State

HFO

HKS

L

H

L

H

H

H

X

H

L

L

L

L

H

L

X

L

X

X

H:

Logic H IG H

L:

Logic LOW

HDO

X

X

X

L

X

X

L

X

L

In p u t N ex t S ta te

HDI

HFI

H

L

H

H

H

L

H

L

H

H

H

L

L

X:

D on 't ca re

An:

U nchanged

HKS

An

An

An

L

An

An

An

H

An

HDO

HFO

L

H

L

L

L

H

L

An

L

:

Rising edge

:

F a llin g e d g e

Hold-line function operation

·

Hold-line function execution
When HDO is low, a falling edge triggers the

HDI

, enabling the Hold-line function (HDO

becomes high). The XMUTE

remains low

when HDO is high.

·

Reset Hold-line function
When HDO is high, the Hold-line function is

enabled and can be reset by:

¨

Off-hook

¨

Applying a falling edge to HDI

¨

Changing the HFO pin from low to high

An

An

An

An

An

H

·

Hold-line function table

Current State

HDO

HKS

H

L

L

L

H

H

H

L

L

L

L

X

H:

Logic H IG H

L:

Logic LOW

HFO

L

X

L

X

H

L

X

X

L

X

L

X

H

L

X

X

X

L

In p u t N ex t S ta te

HFI

HDI

L

H

L

L

L

H

L

H

L

L

L

H

H

X:

D on 't ca re

An:

U nchanged

HKS

An

An

An

L

An

An

An

H

An

HFO

HDO

L

H

L

L

L

H

L

An

L

:

Rising edge

:

F a llin g e d g e

An

L

An

L

An

L

An

An

H

Key definition

·

0,1,2,3,4,5,6,7,8,9 keys
These are dialing number input keys for both

the pulse mode and the tone mode operations.

·

*/T

This key executes the P®T function and wait
aT

duration in the pulse mode. On the

P®T

other hand, the */T key executes the * func­tion in the tone mode.

·

* (HT9320H)

The * key executes the * tone output function
in the tone mode. No response in the pulse
mode.

·

P®T
The key executes the P®T function in the

pulse mode. No response in the tone mode.

·

#
This is a dialing signal key for the tone mode

only, no response in the pulse mode.

14 July 21, 1999

HT9320

·

SA
Pressing this key can save the preceding dial

ing telephone numbers. The saved number is
redialed if it is pressed again. SA will also redial
the saved number if it is the first key pressed at
the off-hook state. During the dialing signal
transmission, the SA key is inhibited.

·

F
The flash key can be selected as a digit or as a

control key by the option resistors R

K13&RK14.

Pressing the flash key will force the PO pin to
be ²low² for the T
lowed by T
R

K13,RK14

·

P

FP

.

duration and is then fol

F

(sec). TFcan also be selected by

Pause key. The execution of this key can
pause the output for the T
be selected by R

·

R

K21

.

duration. TPcan

P

Redial key. Executes redialing as well as
one-key redial function.

·

R/P
Redial and pause function key. If it is pressed

as the first key after off-hook, this key exe­cutes the redial function. Otherwise, it works
as the pause key.

·

ST

-

Store key. The execution of this key actuates
the store memory function with (or without)
dialing output. During the dialing signal
transmission, the ST key is inhibited.

·

A
Auto key. When this key is pressed before

pressing any one of the digital keys (0~9) it
executes the two-touch/ three-touch memory
dialing function.

·

-

PAGE
M11~M20 are represented by pressing the

PAGE key an.d the digital keys (0~9) or
M1~M10. That is to say, A PAGE digit key
(0~9) or PAGE®M1~M10 executes M11~M20
memorydialing.

·

M1~M20
One-touch memory dialing for speed-dialing

in either pulse or tone mode.

15 July 21, 1999

HT9320

Keyboard operation

The following operations are described under an on-off-hook or on-hook condition with the hand-free active
condition.

N o r m a l d ia lin g

·

P ulse m ode

-

(a ) w ith o u t */T

Keyboard input: D 1 D 2 ... D n

D ialing output: D 1 D 2 ... D n

RM: D1 D2 ... Dn

SAM : U nchanged

(b ) w ith */T

K e y b o a rd in p u t: D 1 D 2 ... D n * /T D n + 1 ...

Dm

D ia lin g o u tp u t: D 1 D 2 ... D n T

R M : D 1 D 2 ... D n * /T D n + 1 ... D m

SAM : U nchanged

N o te : T h e m a x im u m c a p a c ity o f th e R M m e m o ry is 3 2 d ig its . W h e n m o re th a n 3 2 d ig its a re e n te re d , th e s ig n a l is

transm itted but the redial function is inhibited.

R edial

·

P ulse m ode

-

(a ) w ith o u t */T , P®T

R M c o n te n t: D 1 D 2 ... D n

Keyboard input: R

D ialing output: D 1 D 2 ... D n

R M : U nchanged

SAM : U nchanged

(b ) w ith */T

R M c o n te n t: D 1 D 2 ... D n */T D n + 1 ... D m

Keyboard input: [ R or R /P ] Keyboard input: [ R or R /P ]

D ia lin g o u tp u t: D 1 D 2 ... D n T

R M : U nchanged

SAM : U nchanged

N o te : If th e d ia lin g n u m b e r e x c eeds 32 digits, redialing is inhibited and P O =V D D

Pulse

Pulse

D n + 1 ... D m

P ® T

D n + 1 ... D m

P ® T

Tone

Tone

T one m ode

-

(a ) w ith o u t */T

Keyboard input: D 1 D 2 ... D n

D ialing output: D 1 D 2 ... D n

RM: D1 D2 ... Dn

SAM : U nchanged

(b ) w ith */T

K e y b o a rd in p u t: D 1 D 2 ... D n * /T D n + 1 ...

Dm

D ia lin g o u tp u t: D 1 D 2 ... D n * D n + 1 ... D m

R M : D 1 D 2 ... D n * D n + 1 ... D m

SAM : U nchanged

T one m ode

-

(a ) w ith o u t */T , P®T

R M c o n te n t: D 1 D 2 ... D n

Keyboard input: R

D ialing output: D 1 D 2 ... D n

R M : U nchanged

SAM : U nchanged

(b ) w ith */T

R M c o n te n t: D 1 D 2 ... D n */T D n + 1 ... D m

D ia lin g o u tp u t: D 1 D 2 ... D n * D n + 1 ... D m

R M : U nchanged

SAM : U nchanged

16 July 21, 1999

O ne-key redial

·

P u ls e m o d e

-

(a ) w ith o u t */T

Keyboard input: D 1 D 2 ... D n R

D ia lin g o u tp u t: D 1 D 2 ... D n T

BRK

T

RP

T one m ode

-

(a ) w ith o u t */T

Keyboard input: D 1 D 2 ... D n R

D ia lin g o u tp u t: D 1 D 2 ... D n T

Pulse

RM: D1 D2 ... Dn

SAM : U nchanged

RM: D1 D2 ... Dn

D 1 D 2 ... D n

Pulse

SAM : U nchanged

(b ) w ith */T

K e y b o a rd in p u t: D 1 D 2 ... D n * /T D n + 1 ...

(b ) w ith */T

K e y b o a rd in p u t: D 1 D 2 ... D n * /T D n + 1 ...

Dm R

D ialing output: D 1 D 2 ... D n T

Pulse

T

TRP D 1 D 2 ... D n T

BRK

D n + 1 ... D m

Tone

P®T

D n + 1 ... D m

Pulse

Tone

PT

D ia lin g o u tp u t: D 1 D 2 ... D n * D n + 1 ... D m

R M : D 1 D 2 ... D n * D n + 1 ... D m

SAM : U nchanged

R M : D 1 D 2 ... D n * /T D n + 1 ... D m

SAM : U nchanged

N o te : If th e d ia lin g n u m b e r e x c eeds 32 digits, redialing is inhibited and P O =V D D

P a u s e

·

Keyboard input: D 1 D 2 ... D n [ P o r R /P ] D n + 1 ... D m

D ialing output: D 1 D 2 ... D n TP D n + 1 ... D m

R M : D 1 D 2 ... D n P D n + 1 ... D m

SAM : U nchanged

TRP D 1 D 2

BRK

... D n

Dm R

T

TRP D 1 D 2 ... D n * D n + 1

BRK

... D m

HT9320

SA copy

·

P ulse m ode

-

(a ) w ith o u t */T

Keyboard input: D 1 D 2 ... D n S A

D ialing output: D 1 D 2 ... D n

R M : D 1 D 2 ... D n

SAM : D1 D2 ... Dn

(b ) w ith */T

K e y b o a rd in p u t: D 1 D 2 ... D n */T D n + 1 ...

Dm SA

D ia lin g o u tp u t: D 1 D 2 ... D n T

P ® T

Pulse

R M : D 1 D 2 ... D n * /T D n + 1 ... D m

S A M : D 1 D 2 ... D n * /T D n + 1 ... D m

D n + 1 ... D m

Tone

T one m ode

-

(a ) w ith o u t */T

Keyboard input: D 1 D 2 ... D n S A

D ialing output: D 1 D 2 ... D n

R M : D 1 D 2 ... D n

SAM : D1 D2 ... Dn

(b ) w ith */T

K e y b o a rd in p u t: D 1 D 2 ... D n * /T D n + 1 ...

Dm SA

D ia lin g o u tp u t: D 1 D 2 ... D n * D n + 1 ... D m

R M : D 1 D 2 ... D n * D n + 1 ... D m

S A M : D 1 D 2 ... D n * D n + 1 ... D m

N ote: The m axim um capacity of the R M m em ory is 32 digits. W hen m ore than 32 digits plus the "SA" key

are entered, the SAVE function will not be executed, and all the existing data in the save m em ory
w ill not be changed.

17 July 21, 1999

S A d ia lin g

·

P ulse m ode

-

(a ) w ith o u t */T

S A M c o n te n t: D 1 D 2 ... D n

Keyboard input: SA

D ialing output: D 1 D 2 ... D n

R M : U nchanged

SAM : U nchanged

(b ) w ith */T

S A M c o n te n t: D 1 D 2 ... D n * /T D n + 1 ... D m

D ia lin g o u tp u t: D 1 D 2 ... D n T

R M : U nchanged

SAM : U nchanged

M e m o ry s to r e

·

O ne-touch m em ory store w ithout dialing output

-

Keyboard input: S T D 1 D 2 ... D n S T M a

D ialing output:

M a : D 1 D 2 ... D n

RM: D1 D2 ... Dn

SAM : U nchanged

T w o -to u c h m e m o ry s to r e w ith o u t d ia lin g o u tp u t

-

(M 1~M 10)

Keyboard input: S T D 1 D 2 ... D n ST

(M 11~M 20)

Keyboard input: ST D 1 D 2 ... D n S T

D ialing output:

M b : D 1 D 2 ... D n

M a: D 1 D 2 ... D n (a=b+10, M 10=M 0)

RM: D1 D2 ... Dn

SAM : U nchanged

T hree-touch m em ory store w ithout dialing output

(M 11~M 20)

Keyboard input: ST D 1 D 2 ... D n S T

D ialing output:

M a: D 1 D 2 ... D n (a=b+10, M 10=M 0)

RM: D1 D2 ... Dn

SAM : U nchanged

Note:

If the dialing num ber exceeds 32 digits, the m em ory store is inhibited.
H ow ever, if the dialing num ber is not m ore than 32 digits the m em ory w ill store a m ax. of 16 digits.
M a=M 1~M 20, M b=M 1~M 10, a=1~20, b=1~9, 0

Pulse

[ b o r M b ]

P A G E [ b o r M b ]

P A G E [ b o r M b ]

D n + 1 ... D m

P ® T

Tone

T one m ode

-

(a ) w ith o u t */T

S A M c o n te n t: D 1 D 2 ... D n

Keyboard input: SA

D ialing output: D 1 D 2 ... D n

R M : U nchanged

SAM : U nchanged

(b ) w ith */T

S A M c o n te n t: D 1 D 2 ... D n * D n + 1 ... D m

Keyboard input: SAKeyboard input: SA
D ia lin g o u tp u t: D 1 D 2 ... D n * D n + 1 ... D m

R M : U nchanged

SAM : U nchanged

O ne-touch m em ory store w ith dialing output

-

Keyboard input: D 1 D 2 ... D n S T S T M a

D ia lin g o u tp u t: D 1 D 2 ... D n

M a : D 1 D 2 ... D n

RM: D1 D2 ... Dn

SAM : U nchanged

T w o-touch m em ory store w ith dialing output

-

(M 1 ~ M 1 0 )

Keyboard input: D 1 D 2 ... D n S T S T

(M 11~M 20)

Keyboard input: D 1 D 2 ... D n S T S T

D ia lin g o u tp u t: D 1 D 2 ... D n

M b : D 1 D 2 ... D n

M a: D 1 D 2 ... D n (a=b+10, M 10=M 0)

RM: D1 D2 ... Dn

SAM : U nchanged

T hree-touch m em ory store w ith dialing output

-

(M 11~M 20)

Keyboard input: D 1 D 2 ... D n S T S T

D ia lin g o u tp u t: D 1 D 2 ... D n

M a: D 1 D 2 ... D n (a=b+10, M 10=M 0)

RM: D1 D2 ... Dn

SAM : U nchanged

[ b o r M b ]

P A G E [ b o r M b ]

P A G E [ b o r M b ]

HT9320

18 July 21, 1999

M e m o r y d ia lin g

·

O ne-touch m em ory dialing (M 1~M 20)

-

M a c o n te n t: D 1 D 2 ... D n

Keyboard input: M a

D ia lin g o u tp u t: D 1 D 2 ... D n

M a: U nchanged

RM: D1 D2 ... Dn

SAM : U nchanged

T w o-touch m em ory dialing (M 1~M 10)

-

M b c o n te n t: D 1 D 2 ... D n

Keyboard input: A [ b o r M b ]

D ia lin g o u tp u t: D 1 D 2 ... D n

M b: U nchanged

RM: D1 D2 ... Dn

SAM : U nchanged

T hree-touch m em ory dialing (M 11~M 20)

-

M 11 content: D 1 D 2 ... D n

Keyboard input: A PA G E [ M b o r b ]

D ia lin g o u tp u t: D 1 D 2 ... D n

M a: U nchanged (a=b+10, M 10=M 0)

RM: D1 D2 ... Dn

SAM : U nchanged

N o te : a = 1 ~ 2 0 , M a = M 1 ~ M 2 0

M b = M 1 ~ M 1 0 , b = 1 ~ 9 , 0

C hain dialing

·

M 1 c o n te n t: D 1 D 2 ... D n

M 2 content: D n+1 ... D m

Keyboard input: D 1 D 2 D 3 [ M 1 or A 1 ] [ M 2 o r A 2 ]

D ialing output: D 1 D 2 D 3 D 1 D 2 ... D n D n+1 ... D m

M 1/M 2: U nchanged

R M : D 1 D 2 D 3 D 1 D 2 ... D n D n + 1 ... D m

SAM : U nchanged

N o te : If th e d ia lin g n u m b e r e x c eeds 32 digits, redialing is inhibited and P O =V D D

HT9320

F la s h

·

F la s h a s a d ig ita l k e y

(a ) T h e in te rv e n ie n t k e y

Keyboard input: D 1 D 2 ... D n F D n + 1 ...
D m

D ialing output: D 1 D 2 ... D n TF TFP D n + 1 ...

RM: D1 D2 ... Dn

SAM : U nchanged

(b ) T h e firs t k e y

Keyboard input: F D 1 D 2 ... D n

D ia lin g o u tp u t: TF TFP D 1 D 2 D n

R M : U nchanged

SAM : U nchanged

Dm

F lash a s a contro l key

-

Keyboard input: D 1 D 2 ... D n F D n + 1 ...
D m

D ialing output: D 1 D 2 ... D n TF TFP D n + 1 ...

R M : D n + 1 ... D m

SAM : U nchanged

N o te : T

: b re a k a fla s h tim e

F

Dm

19 July 21, 1999

ID D lock operation by the keyboard (2 lock num bers, 3 digits/num ber at m axim um )

·

(A 330kW resistor is connected betw een C 5 and R 1)

P ersonal/Lock N o.1/Lock N o.2 input operation

(a) P ersonal code doesn't exist

Stores Personal C ode: S T D 1 D 2 D 3 S T * 0

S to re s L o c k N o .1 : S T D 4 D 5 D 6 S T * 1

S to re s L o c k N o .2 : S T D 7 D 8 D 9 S T * 2

(b) P ersonal code exist

C hanges P ersonal C ode: ST D 1 D 2 D 3 S T # S T D 4 D 5 D 6 ST * 0

(O ld personal code)

C hanges Lock No.1: S T D 1 D 2 D 3 S T # ST D 4 D 5 D 6 ST * 1

C hanges Lock No.2: S T D 1 D 2 D 3 S T # ST D 7 D 8 D 9 ST * 2

C hanges P ersonal C ode, Lock N o.1 and Lock N o.2 at one tim e

P ersonal/Lock N o.1/Lock N o.2 cancel operation

-

C ancels Personal code: S T D 1 D 2 D 3 S T # S T # 0

C a n c e ls L o c k N o .1 : S T D 1 D 2 D 3 S T # S T # 1

C a n c e ls L o c k N o .2 : S T D 1 D 2 D 3 S T # S T # 2

Tem porary release both of the lock num bers (Lock N o.1, Lock N o.2):

-

S T D 1 D 2 D 3 S T # D m D m + 1 D m + 2 D l ... D n

(P ersonal code)

(P ersonal code) (Lock N o.1)

(P ersonal code)

ST D 1 D 2 D 3 S T # S T D 4 D 5 D 6 ST * 0 (continued)

(O ld personal code) (N ew personal code)
S T D 7 D 8 D 9 S T * 1 S T D 1 0 D 1 1 D 1 2 S T * 2

(Lo ck N o.1) (Lock N o.2)

(N ew personal code)

(Lo ck N o.2)

HT9320

D 1~D 12 = 0~9

Note:

Dm Dm+1 Dm +2 = 0~9
D l ... D n = 0 ~ 9 , * , #

N o te :

·

R M : R edial m em ory

SAM : Save dialing m em ory

D 1 D 2 ... D n : 0 ~ 9

D n + 1 ... D m : 0 ~ 9 , * , #
D m + 1 ... D I: 0 ~ 9 , * , #

D I+ 1 ... D K : 0 ~ 9 , * , #

20 July 21, 1999

Timing Diagrams

Normal dialing

·

Pulse mode

HKS

HT9320

H igh Im pedance

KEY IN

XM UTE

PO

DTM F

KT

X2

·

Tone mode

HKS

KEY IN

XM UTE

D2D1

T

DB

T

T

PDP

T

T

KT

ID P-TM

T

B

T

DB

T

ID P-TM

T

M

M

T

KT

20m s 20m s

D2

T

DB

T

DB

R

RD1

T

T

DB

T

PDP

1.2kH z carrier

T

KT

DB

T

ID P

H igh Im pedance

T

T

M

ID P-TM

PO

DTM F

KT

X2

T

IT P M

T

IT P M

20m s 20m s

21 July 21, 1999

T

IT P M

T

TM IN

T

IT P M

Dialing with Pause key

·

Pulse mode

HKS

HT9320

H igh Im pedance

KEY IN

XM UTE

PO

DTM F

KT

X2

·

Tone mode

HKS

KEY IN

XM UTE

D2D1

T

DB

T

PDP

P

T

DB

T

DB

T

T

ID P

ID P

TP + T

PDP

D3

T

DB

T

M

T

ID P-TM

1.2kH z carrier

T

KT

T

KT

20m s

H igh Im pedance

D1

P

T

DB

D3D2

T

P

PO

DTM F

KT

X2

20m s

T

T

TM IN

IT P M

T

IT P M

T

IT P M

22 July 21, 1999

Flash key operation

HKS

HT9320

H igh Im pedance

K E Y IN

F

T

DB

XM UTE

PO

DTM F

KT

1.2kH z carrier

T

KT

X2

20m s

Pulse ® Tone operation

HKS

KEY IN

XM UTE

PO

D1

T

DB

T

PDP

D2

T

F

T

FP

H igh Im pedance

*/T

T

DB

T

+ T

ID P

PDP

D3

T

T

T

ID P

DB

P®T

T

T

TM IN

IT P M

DTM F

KT

X2

20m s

1.2 kH z carrier

T

KT

23 July 21, 1999

One key redial operation

HKS

HT9320

H igh Im pedance

KEY IN

XM UTE

D1 D2 R

T

DB

T

IT P M

PO

DTM F

KT

X2

20m s

CLOCK & DOUT operating

HKS

KEY IN

XM UTE

T

T

DB

T

IT P M

T

DB

T

BRK

(1.2 secs)

T

RP

(1 se c )

T

IT P M

IT P M

H igh Im pedance

D1

T

DB

T

PDP

T

B

T

M

PO

KT

CLOCK

DOUT

X2

Note:D1=D3=3

D2=2

20m s

T

(34m s)

KT

1.2kH z C arrier

F

=2.4kH z

CLO CK

Data

24 July 21, 1999

Application Circuits

Application circuit 1

* R k is for the dialing signal option

(R e fe r to th e fu n c tio n a l d e s c rip tio n )

* U nspecified transistors are of 8050 type

* A 1 m F capacitor betw een X M U TE and VSS (G N D ) is recom m ended

* The H T381X X (H T3810 series) provides a m elody during the hold period

HT9320

*/T

7

5

8

0

9

#

ST

R

A

M4/

M5/

M13

M14

M15

M 10/

M9/

M18

M19

M20

SA

1

4

P

2

PAG E

3

6

F

M1/

M2/

M3/

M11

M12

M6/

M7/

M8/

M16

M17

Ring

1A bridge

Tip

39pF 39pF

store

10pF

Tone

33/66

O ff-hook

Rk Rk

3.3k

A42

W

47kW

H T381X X

1N 4148 x 4

1N 41481N 4148

220k

W

1 m F

0.1

m

F

100

m

F

0.02

m

F

H andfree

10kW

1

m

F

VDD

Hold

5.1V

22kW

22k

W

0.1

m

F

100kW

270kW

47k

W

1.5kW

7

R4

R5

C6 C5 C4 C3 C2

27 26 25 24 23 22

C1

VSS MO DE X1 X2

15 11

10pps

20pps

VDD

12 13

3.58M H z

resonator

9

40/60

O n-hook

store

28 D IP

M/B

XM UTE

HST

2

R3

H T 9320A

19

R1

R2

PO

17162110

HDI

VDDHFI HDO

HKS

814

DTMF

HFO

18

20

3

4

5

6

100k

W

A92

10m F

50V

100kW

220kW

33k

W

4.7kW

0.1m F
330kW

16V

1

m

F

2.2k

W

1N 4148

O ff-hook

O n-hook

22M

W

220kW

100k

W

1N 4148

1N 4148

3~5V

1 m F

NETW ORK

SPEECH

150W

25 July 21, 1999

Application circuit 2

HT9320

* T he H T381X X (H T3810 series) provides a m elody during the hold period

* U nspecified transistors are of 8050 type

* A 1 m F capacitor betw een X M U TE and V SS (G N D ) is recom m ended

*/T

7

8

0

9

#

* R k is for the dialing signal option

(R e fe r to th e fu n c tio n a l d e s c rip tio n )

10pF

Tone

10pps

20pps

39pF 39pF

3.58M H z

resonator

(see H T 16X X data)

LCD DRIVER

HT16XX

ST

R

M4/

M5/

M13

M14

M15

M 10/

M9/

M18

M19

M20

Rk Rk

6

7

R4

R5

C6 C5 C4 C3 C2

27 26 25 24 23 22

C1

VSS MO D E X1 X2 CLOCK

15 11

VDD

12 13

9

DOUT

28 D IP

XM UTE

2

1

m

F

SA

1

4

P

2

5

PAG E

3

6

A

F

M1/

M2/

M3/

M11

M12

M6/

M7/

M8/

M16

M17

0.1

m

F

100m F

1N 4148

0.02

m

F

10kW

1

m

F

VDD

5.1V

22kW

0.1

m

F

100kW

47kW

1.5kW

150

W

H andfree

Hold

270k

W

A42

47k

W

1N 4148 x 4

22k

W

220k

W

R3

3

4

5

R1

R2

PO

H T 9320B /L

HFO

19

17162110

HDI

14

VDDHFI HDO

8

HKS

DTMF

18

20

47k

W

Ring

1A bridge

3.3k

W

50V

100kW

33k

W

H T381X X

4.7kW

0.1m F
330k

W

16V

1 m F

2.2kW

1N 41481N 4148

1N 4148

1

m

F

100kW

10m F

220k

W

220kW

1N 4148

A92

O n-hook

100kW

Tip

O ff-hook

22M W

NETW ORK

SPEECH

26 July 21, 1999

Application circuit 3

HT9320

* U nspecified transistors are of 8050 type

* A 1 m F capacitor betw een X M U TE and V SS (G N D ) is recom m ended

*/T

0

#

* R k is for the dialing signal option

(R e fe r to th e fu n c tio n a l d e s c rip tio n )

10pF

Tone

20pps

39pF39pF

resonator

R

M15

M20

Rk Rk

R5

C6 C5 C4 C3 C2

21 20 19 18 17 16

C1

VSS M O DE X1 X2

12

8

10pps

VDD

910

3.58M H z

M5/

M 10/

4

7

5

8

6

9

ST

A

M4/

M13

M14

M9/

M18

M19

5

6

R3

R4

22 S K D IP

1

2

3

F

M3/

M12

M8/

M17

4

H T 9320C

R2

SA

P

PAG E

Ring

M1/

M2/

M11

M6/

M7/

M16

2

3

R1

15

PO

VDD

HKS

DTM F

0.1
VDD

m

F

5.1V

100

m

F

0.1

m

F

711

100kW

13

1.5kW

270k

W

A42

47kW

1N 4148

1N 4148

220k

W

1A bridge

100k

3.3k

W

1 m F

W

2.2kW

1N 4148

A92

O n-hook

Tip

O ff-hook

22M W

100kW

XM UTE

14

1

m

F

NETW ORK

SPEECH

150W

27 July 21, 1999

Application circuit 4

* R k is for the dialing signal option

(R e fe r to th e fu n c tio n a l d e s c rip tio n )

* U nspecified transistors are of 8050 type

* A 1 m F capacitor betw een X M U TE and V S S (G N D ) is recom m ended

* T he H T381X X (H T3810 series) provides a m elody during the hold period

HT9320

SA

1

4

7

*

2

5

8

0

PAG E

3

6

9

#

R/P

ST

A

M4/

M5/

M13

M14

M15

M 10/

M9/

M18

M19

M20

P

®

F

T

M1/

M2/

M3/

M11

M12

M6/

M7/

M8/

M16

M17

Ring

1A bridge

Tip

39pF 39pF

store

10pF

Tone

40/60

O ff-hook

20pps

33/66

resonator

O n-hook

store

1N 4148

100k

W

0.1m F

16V

33kW

1

m

F

2.2k

W

1N 4148

100k

W

A92

220k

W

1N 4148

H ook off

H ook on

22M

W

100k

W

10

50V

m

F

220k

W

4.7kW

330kW

Rk Rk

7

R3

R4

R5

C6 C5 C4 C3 C2

27 26 25 24 23 22

C1

VSS MO D E X1 X2

15 11

10pps

VDD

12 13

3.58M H z

9

28 D IP

M/B

XM UTE

HST

2

1

m

F

H T 9320H

HFO

19

R1

R2

PO

17162110

HDI

VDDHFI HDO

814

HKS

DTMF

18

20

3

4

5

6

0.02

m

F

H andfree

10kW

1

m

F

0.1

VDD

m

F

100m F

0.1m F

100k

W

Hold

5.1V

22kW22k

W

270k

W

47kW

1.5k

W

150W

3.3kW

A42

47k

W

H T381X X

1N 4148 x 4

1N 41481N 4148

220kW

1

m

F

3~5V

NETW ORK

SPEECH

28 July 21, 1999

Application circuit 5

HT9320

* T he H T381X X (H T3810 series) provides a m elody during the hold period

* U nspecified transistors are of 8050 type

* A 1 m F capacitor betw een X M U TE and V S S (G N D ) is recom m ended

6

M3/

M8/

5

R3

H T 9320K

HFO

19

NETW ORK

SA

1

P

2

PAG E

3

F

M1/

M2/

M11

M12

M6/

M7/

M16

M17

3

4

R1

R2

PO

17162110

HDI

VDDHFI HDO

HKS

814

DTMF

18

20

SPEECH

0.02m F

10kW

1m F

0.1m F

VDD

5.1V

22kW

100m F

0.1m F

100kW

47kW

1.5kW

150W

H andfree

Hold

22kW

270k

W

A42

47kW

1N 4148 x 4

220kW

Ring

1A bridge

3.3kW

50V

100k

W

33kW

H T381X X

4.7kW

0.1m F

330kW

16V

1

m

F

2.2kW

1N 41481N 4148

1N 4148

1 m F

Tip

100kW

A92

220k

W

1N 4148

O ff-hook

O n-hook

22M W

100k

W

10m F

220kW

*/T

0

* R k is for the dialing signal option

(R e fe r to th e fu n c tio n a l d e s c rip tio n )

10pF

Tone

20pps

39pF 39pF

R

M15

M20

Rk Rk

R5

C6 C5 C4 C3 C2

27 26 25 24 23 22

VSS MO D E X1 X2

15 11

10pps

VDD

12 13

3.58M H z

resonator

B uzze r

#

C1

M5/

M 10/

4

7

5

8

9

ST

A

M4/

M13

M14

M9/

M18

M19

6

7

R4

28 D IP

XM UTE

KT

2

1

m

F

29 July 21, 1999

HT9320

Holtek Semiconductor Inc. (Headquarters)

No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]

Holtek Semiconductor Inc. (Taipei Office)

5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]
Fax: [phone] (International sales hotline)

Holtek Microelectronics Enterprises Ltd.

RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong
Tel: [phone]
Fax: [phone]

Copyright ã 1999 by HOLTEK SEMICONDUCTOR INC.

The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek
assumes 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 pres
ent a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior
notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw.

30 July 21, 1999

-