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ht9302 series 1-memory/2-memory tone/pulse dialer selection table function part no. lock function (pin selection) hold line hand free lcd interface package ht9302x (normal version) HT9302A 18 dip ht9302b 22 skdip ht9302c 20 dip ht9302d 24 skdip ht9302g (simple version) ht9302g 16 dip rev. 1.20 1 september 30, 2002 features 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 hand-free control hold-line control pause, p t can be saved for redialing lock function resistor options m/b ratio flash function and flash time 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 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- 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. patent number: 64097, 86474, 64529, 113235 (r.o.c.) 5424740 (u.s.a.)
block diagram pin assignment ht9302x normal version ht9302g simple version ht9302 series rev. 1.20 2 september 30, 2002
! " # $ % # & ' ( ' ! ( ( & (
) ( * ) ( + + * * , " # !
$ + - , ( . / + - , 0 1 , - + / . 2 3 , - * * , * ) ( 4 4

, - + * * , * ) ( 4
) ( , - + * * , * ) ( 4 3 2 . / + - , 0 , - + / . 2 3 1 + - , ( 4
, - + * * , * ) ( 4
, , , , 0 1 3 2 . / + - , , - + / . 2 3 1 0 + - , ( 4 , - + * * , * ) ( 4 ) ( , 0 1 3 2 . / + - , , - + / . 2 3 1 0 + - , ( 4 , + , - , , , , 0 1 3 2 . / + - , - + / . 2 3 1 0 , + - , ( 4
keyboard information pin description pin name i/o internal connection description c1 ~c4 r1 ~r4 i/o cmos in/out these pins form a 4 4 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 the column group (c1 ~c4 ) remains low and the row group (r1 ~r4 ) is set high for key input detection. an inexpensive single contact 4 4 keyboard can be used as an input device. pressing a key connects a single column to a single row, and actuates the system oscillator that results in a dialing 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 arrangement and to the functional descrip - tion for dialing specification selection. x1 i oscillator the system oscillator consists of an inverter, a bias resistor and the necessary load capacitor on chip. connecting a standard 3.579545mhz crystal or ceramic resonator to the x1 and x2 terminals can implement the oscillator function. the oscillator is turned off in the standby mode, and is actuated whenever a key- board entry is detected. x2 o xmute o nmos out xmute is an nmos open drain structure pulled to vss during dialing signal transmission. otherwise, it is an open circuit. the xmute is used to mute the speech circuit when transmitting the dial signal. hks i cmos in this pin is used to monitor the status of the hook-switch and its combination with hfi/hdi can control the po pin output to make or break the line. hks =vdd: on-hook state (po =low). except for hfi/hdi (hand-free/hold-line control input), other functions are all disabled. hks =vss: off-hook state (po =high). the chip is in the standby mode and ready to receive the key input. po o cmos out this pin is a cmos output structure, which by receiving hks and hfo/hdo signals, control the dialer to connect or disconnect the telephone line. po outputs a low to break the line when hks is high (on-hook) and hfo/hdo is low. po outputs a high to make the line when hks is low (off-hook) or hfo is high or hdo is high. during the off-hook state, the pin also outputs the dialing pulse train in pulse mode dialing. while in the tone mode, this pin is always high. mode i/o cmos in/out this is a three-state input/output pin, used for dialing mode selection whether tone mode or pulse mode; 10pps/20pps. mode=vdd: pulse mode, 10pps mode=open: pulse mode, 20pps mode=vss: tone mode during pulse mode dialing, switching this pin to the tone mode changes the subsequent digit entry to tone mode. when the chips are in tone mode, switch - ing to the pulse mode will also be recognized. ht9302 series rev. 1.20 3 september 30, 2002 + 2 5 $ ( , / 3 0 - . 1 6 + - , + , - + 2 5 $ ( , / 3 0 - . 1 6 + - , , -
pin name i/o internal connection description dtmf o cmos out 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 trans - mitter amplifier circuit. the load resistor should not be less than 5k . hdi i cmos in pull-high this pin is a schmitt trigger input structure. active low. applying a negative go - ing pulse to this pin can toggle the hdo output once. an external rc network is recommended for input debouncing. the pull-high resistance is 200k typ. hdo o cmos out the hdo is a cmos output structure. its output is toggle- controlled by a nega - tive transition on hdi . when hdo is toggled high, po keeps high to hold the line. the hold function can be released by setting hfo high or by an on-off hook operation or by another hdi input. refer to the functional description for the hold-line function. hfi i cmos in pull-low this pin is a schmitt trigger input structure. active high. applying a positive go - ing pulse to hfi can toggle the hfo once and hence control the hand-free func - tion. the pull-low resistance of hfi is 200k typ. an external rc network is recommended for input debouncing. hfo o cmos out the hfo is a cmos output structure. its output is toggle- controlled by a posi - tive transition on hfi pin. when hfo is high, the hand-free function is enabled and po outputs a high to connect the line. the hand-free function can be released by setting hdo high or by an on-off-hook operation or by another hfi input. refer to the functional description for the hand-free functional operation. lock i/o cmos in/out this is a three-state input/output pin, used for controlling long distance call function with a lock-switch. lock=open: normal dialing (no lock) lock=vdd: 0, 9 is inhibited for use as the first key input lock=vss: 0 is inhibited for use as the first key input dout o nmos out nmos open drain output pin. it outputs the bcd code of the dialing digits to the lcd driver chip (ht16xx series) or mcu for dialing number display. refer to the functional description for the detailed timing. clock o nmos out nmos open drain output. when dialing, it outputs a series of pulse trains for dout data synchronization. dout data is valid at the falling edge of clock. vdd positive power supply, 2.0v~5.5v for normal operation vss negative power supply, ground approximate internal connection circuits ht9302 series rev. 1.20 4 september 30, 2002 7 ) ( 4
7 $ ) (
7 8
7 8 ' 9 '
7
( * * , 0 , 0 : 0 : ) ( 4 4
absolute maximum ratings supply voltage ........................................... 0.3v to 6v storage temperature ........................... 50
cto125
c input voltage .............................. v ss 0.3 to v dd +0.3v operating temperature .......................... 20
cto75
c note: these are stress ratings only. stresses exceeding the range specified under absolute maximum ratings 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 exposure to extreme conditions may affect device reliabil - ity. electrical characteristics f osc =3.5795mhz, ta=25
c symbol parameter test conditions min. typ. max. unit v dd conditions v dd operating voltage 2 5.5 v i dd operating current 2.5v pulse off-hook keypad entry no load 0.2 1 ma tone 0.6 2 ma i stb standby current 1v on-hook, no load no entry 1 a v r memory retention voltage 1 5.5 v i r memory retention current 1v on-hook 0.1 0.2 a v il input low voltage v ss 0.2v dd v v ih input high voltage 0.8v dd v dd v i xmo xmute leakage current v xmute =12v no entry 1 a i olxm xmute sink current 2.5v v xmute =0.5v 1 ma i hks hks pin input current 2.5v v hks =2.5v 0.1 a r hfi hfi pull-low resistance 2.5v v hfi =2.5v 200 k r hdi hdi pull-high resistance 2.5v v hdi =0v 200 k i oh1 keypad pin source current 2.5v v oh =0v 4 40 a i ol1 keypad pin sink current 2.5v v ol =2.5v 200 400 a i oh2 hfo pin source current 2.5v v oh =2v 1 ma i ol2 hfo pin sink current 2.5v v ol =0.5v 1 ma i oh3 hdo pin source current 2.5v v oh =2v 1 ma i ol3 hdo pin sink current 2.5v v ol =0.5v 1 ma t fp pause time after flash control key 0.2 s digit key 1 t rp one-key redialing pause time one-key redialing 1 s t db key-in debounce time 20 ms t brk break time for one-key redialing one-key redialing 1.2 s f osc system frequency crystal=3.5795mhz 3.5759 3.5795 3.5831 mhz ht9302 series rev. 1.20 5 september 30, 2002
pulse mode electrical characteristics f osc =3.5795mhz, ta=25
c symbol parameter test conditions min. typ. max. unit v dd conditions i poh po output source current 2.5v v oh =2v 0.2 ma i pol po output sink current 2.5v v ol =0.5v 0.2 0.6 ma pr pulse rate mode pin is connected to v dd 10 pps mode pin is opened 20 m/b make/break ratio a resistor is linked between r2 and c1 33:66 % no resistor is linked between r2 and c1 40:60 t pdp pre-digit-pause time m/b ratio=40:60 40 (10pps) 20 (20pps) ms m/b ratio=33:66 33 (10pps) 17 (20pps) t idp inter-digit-pause time pulse rate=10pps 800 ms pulse rate=20pps 500 t m pulse make duration a resistor is linked between r2 and c1 33 (10pps) 17 (20pps) ms no resistor is linked between r2 and c1 40 (10pps) 20 (20pps) t b pulse break duration a resistor is linked between r2 and c1 66 (10pps) 33 (20pps) ms no resistor is linked between r2 and c1 60 (10pps) 30 (20pps) tone mode electrical characteristics f osc =3.5795mhz, ta=25
c symbol parameter test conditions min. typ. max. unit v dd conditions v tdc dtmf output dc level 0.45v dd 0.7v dd v i tol dtmf sink current 2.5v v dtmf =0.5v 0.1 ma v tac dtmf output ac level row group, r l =5k 0.12 0.155 0.18 vrms r l dtmf output load 2.5v thd 23db 5 k a cr column pre-emphasis 2.5v row group=0db 1 2 3 db thd tone signal distortion 2.5v r l =5k 30 23 db t tmin minimum tone duration auto-redial others 82.5 ms 9302g 100 t itpm minimum inter-tone pause auto-redial others 85.5 ms 9302g 106 thd (distortion) (db) = 20 log v1 v2 vn / vi vh 22 222 vi, vh: row group and column group signals v1, v2, ... vn: harmonic signals (bw=300hz~3500hz) ht9302 series rev. 1.20 6 september 30, 2002
ht9302 series rev. 1.20 7 september 30, 2002 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 selections. the keyboard arrangement for each of the ht9302 series are shown in the keyboard informa - tion . 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% note: % error does not contain the crystal frequency drift dialing specification selection by means of adding resistors on the keyboard matrix pins, various dialing specifications can be selected. the allowable option resistor connections are shown. all the resistors are 330k . the resistor option functions and the default specifications (without option resistors) are listed below. option resistor option function default (no resistor) r k12 make/break ratio selection 40:60 r k13 flash function and flash time selection flash=control function flash time=600ms r k14 r k21 pause & p t duration selection t p =3.6s t p t =3.6s r k31 pulse number selection n r k41 m/b ratio selection table r k12 m/b ratio (%) no 40:60 yes 33.3:66.6 flash function/time (duration) selection table 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 pause and p t duration selection table r k21 t p (sec) t p t (sec) no 3.6 3.6 yes 2 1 pulse number selection table this table shows pulse number selections for ht9302x. r k31 r k41 pulse number no no n no yes n+1 yes no 10 n yes yes ht9302g has different selection method listed in the table below. r k31 pulse number no n yes 10-n + - , + - , , - + , - +
ht9302 series rev. 1.20 8 september 30, 2002 pulse number table keypad output pulse number digit key normal n new zealand (10 n) sweden/ denmark (n+1) 1192 2283 3374 4465 5556 6647 7738 8829 99110 010101 /t p tp tp t # ignored ignored ignored hand-free function operation hand-free function execution when hfo is low, a rising edge triggers the hfi, en- abling 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 hand-free function table hold-line function operation hold-line function execution when hdo is low, a falling edge triggers the hdi ,en - abling 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 hold-line function table 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 * ! * * * ! * * * * * * ! ! ; ; 9
" 9 * ; ; < # ) ' # 9 ; ; & 9 9 # 9 9 * ! * * * ! * * * * * * ! ! ; ; 9
" 9 * ; ; < # ) ' # 9 ; ; & 9 9 # 9 9
ht9302 series rev. 1.20 9 september 30, 2002 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 enabled. the lock function selection is listed below. ht9302x version lock pin function open normal dialing (no lock) vdd 0, 9 is inhibited vss 0 is inhibited 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 waits a t p t duration in the pulse mode. on the other hand, the /t key executes the function in the tone mode. # this is a dialing signal key for the tone mode only, no response in the pulse mode. sa pressing this key can save the preceding dialing tele- phone 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 a control key by the option resistors r k13 &r k14 . pressing the flash key will force the po pin to be low for the t f duration and is then followed by t fp (sec). t f can also be selected by r k13 ,r k14 . p pause key. the execution of the pause key pauses the output for the t p duration. t p can be selected by r k21 . r redial key. executes redialing as well as one-key re - dial function. st this key can store lock number with personal code in idd lock operation. 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.
keyboard operation the following operations are described under an on-off- hook or on-hook condition with the hand-free active condition. ht9302 series rev. 1.20 10 september 30, 2002 # : ; , = = = & > # ? ' 5 $ ( # 9 : ; , = = = ; , = = = ; ) ' # 9 > ? ' 5 $ ( # 9 : ; , = = = ( @ = = = ; , = = = 5 $ ( @ = = = ; ) ' # 9 ( & 7 # # 9 # : ; , = = = 5 $ ( @ = = = > # ? ' 5 $ ( # 9 : ; , = = = ; , = = = ; ) ' # 9 > ? ' 5 $ ( # 9 : ; , = = = 5 @ = = = ; , = = = 5 @ = = = ; ) ' # 9 ( > # ? ' 5 $ ( # 9 : ; , = = = ; ) ' # 9 ; ) ' # 9 ; , = = = > ? ' 5 $ ( # 9 : ; , = = = ( @ = = = ; ) ' # 9 ; ) ' # 9 ; , = = = 5 $ ( @ = = = # 9 : ; , = = = ; ) ' # 9 ; ) ' # 9 ; , = = = > ? ' 5 $ ( # 9 : ; , = = = 5 @ = = = ; ) ' # 9 ; ) ' # 9 ; , = = = 5 $ ( @ = = = & ( & ( # # : ; , = = = 5 $ ( @ = = = > # ? ' 5 $ ( # : ; , = = = # : ; a $ b # : ; a $ b # : ; a $ b # : ; a $ b 7 ; ( ' # c # : # d ' & - , 9 & = ' ' # - , 9 & # e ' & 9 # & # & ' # d & ' =
ht9302 series rev. 1.20 11 september 30, 2002 # : ; , = = = 5 $ ( @ = = = # : ; , = = = 5 $ ( @ = = = # : ; , = = = > # ? ' 5 $ ( # 9 : ; , = = = % ; , = = = ; ) ' # 9 > ? ' 5 $ ( ; , = = = 5 $ ( @ = = = ; ) ' # 9 > # ? ' 5 $ ( ; , = = = ; ) ' # 9 > ? ' 5 $ ( ( & & % , = = = ( & # 9 : ; , = = = 5 @ = = = ; , = = = 5 @ = = = ; ) ' # 9 % , = = = 5 @ = = = ( # 9 : ; , = = = ( @ = = = ( 8 ! # > # ? ' 5 $ ( # 9 : ; , = = = ; , = = = ; , = = = > ? ' 5 $ ( ; , = = = 5 $ ( @ = = = ; , = = = 5 $ ( @ = = = > # ? ' 5 $ ( # 9 : ; , = = = ; , = = = ; , = = = > ? ' 5 $ ( # 9 : ; , = = = 5 @ = = = ; , = = = 5 @ = = = ; , = = = 5 @ = = = & ( # 9 : ; , = = = ( @ = = = ( & : , = = = # 9 : ; , = = = % , = = = @ = = = # : ; , = = = # : ; , = = = 5 $ ( @ = = = # : ; , = = = # : ; , = = = # : ; , = = = 5 $ ( @ = = = 7 ; ( ' # c # : # d ' & - , 9 & = ' ' # - , 9 & : & ' f f ! # e ' 4 d c e # # ' c & 9 # # ' & # ' # 9 = 7 ;
d ' # 9 c & - , 9 & e # 9 & ' # g 4
ht9302 series rev. 1.20 12 september 30, 2002 # : ; , = = = @ = = = > # ? ' 5 $ ( # 9 : ; , = = = ; ) ' # 9 ; ) ' # 9 > ? ' 5 $ ( ; ) ' # 9 ; ) ' # 9 > # ? ' 5 $ ( # 9 : ; , = = = ; ) ' # 9 ; ) ' # 9 > ? ' 5 $ ( # 9 : ; , = = = 5 @ = = = ; ) ' # 9 ; ) ' # 9 ; , = = = ; , = = = 5 $ ( @ = = = ; , = = = ; , = = = 5 @ = = = & ( # 9 : ; , = = = ( @ = = = ( & # 9 # : ; # : ; # : ; # : ; ; , = = = ; ) ' # 9 # & ' # & # 9 # ! # & ' # & # ! > # ? ( ' ! ; ) ' # 9 ; ) ' # 9 # 9 : ; , = = = # : ; , = = = > ? ( ' d & ! # & ' # 9 : ; , = = = @ = = = ; @ = = = ; ) ' # 9 # 9 : ; , = = = ( ( @ = = = 7 ; ( ; # ! # d # & ' # : ; , = = = @ = = = # 9 : ; , = = = @ = = = ; , = = = @ = = = ; ) ' # 9 # : ; , = = = @ = = = # & 7 ; # ; # # 9 , = = = ; 0 h 1 @ = = = ; 0 h 1 e 5 e 6
timing diagrams normal dialing pulse mode tone mode ht9302 series rev. 1.20 13 september 30, 2002 ( 1 - 0 , " * ) ( ' & * ) ( i
7
8 % % %
9 '
: #
8 , * , , 0 & %
8 , 0 &
8 ( * , ( 9 '
: # %
(
( (
7 i
7
(
( % % , * ) ( , 0 & , 0 &
dialing with pause key pulse mode tone mode ht9302 series rev. 1.20 14 september 30, 2002 ( 1 - 0 , " * ) ( ' & * ) ( i
7 (
% 9 '
: #
8 - ,
8 @ * , , 0 & * , ( 9 '
: # %
( i
7 - , (
7
(
( * ) ( , 0 &
flash key operation pulse tone operation ht9302 series rev. 1.20 15 september 30, 2002 i
7 * , 9 '
: # % , 0 & ( * ) ( i
7 * , ( 9 '
: #
@ (
7 %
(
( , 0 & , - 5 $ ( * ) (
one key redial operation clock & dout operation ht9302 series rev. 1.20 16 september 30, 2002 > & ? % > = , & & ?
(
( 9 '
: #
(
( i
7 * , ( , % * ) ( , 0 & % % 7 ; g - g - , g , d g , = + ! j # # % % 9 '
: # * , ) ( i
7 * ) ( , 0 &
application circuits application circuit 1 ht9302 series rev. 1.20 17 september 30, 2002 + + * ) ( 4 * * , 4 0 : : & , 0 : : & ( 2 3 - = / 3 j & # 4 / 0 + - / = 4 7 + + 3 7 + + 3 + , 1 , , , ( : 9 9 + - , 1 . ( / . 2 3 ! ! 7 ( , - , - 0 , 5 ! d # 9 & 9 # : > d ' d # & : ? 5 ) & : d # & & & # d 3 0 / 0 : 5 # : # * ) ( # 4 > " 7 ? & + 2 5 $ ( , / 3 0 - . 1 6 4 4 0 e 1 ! 0 / 0 : 0 : - 1 : - 1 : = / ! , , 0 ! 0 0 ! 0 0 ! , 2 0 ! 0 0 0 = , = , ! + 2 ! - = - ! 0 0 ! d d 8 ' ! 8 ' !
application circuit 2 ht9302 series rev. 1.20 18 september 30, 2002 / 0 0 0 / = 4 7 + + 3 7 + + 3 7 + + 3 7 + + 3 c + . 4 7 + + 3 # 8 d + , 0 / 0 4 1 , , , ( : 9 9 + + * ) ( 4 * * , 4 3 2 , / + - 0 2 ( 3 1 , 0 , ! ! , - , - /
, ,
4 - + 7 ( + 2 5 $ ( , / 3 0 - . 1 6 4 . , 1 0 : : & , 0 : : & ( - = / 3 j & # 4 . 0 e 1 ! 0 0 : 5 ! d # 9 & 9 # : > d ' d # & : ? 5 ) & : d # & & & # d 3 0 / 0 : 5 # : # * ) ( # 4 > " 7 ? & 0 : - 1 : - 1 : 0 = = / ! + 2 ! 0 0 ! , 2 0 ! , , 0 ! , = , ! 0 0 ! , , 0 ! , , ! , , ! 0 = 0 = - - 0 ! , , 0 ! 0 0 ! 0 0 ! - - ! - = - ! + 2 ! 0 = 0 , 0 ! d d 8 ' ! 8 ' !
application circuit 3 ht9302 series rev. 1.20 19 september 30, 2002 + + * ) ( 3 - = / 3 j & # 4 / 0 / / = 4 7 + + 3 7 + + 3 + , 1 , , , ( : 9 9 + - , ( 2 3 1 , 0 ! ! , - , - - , + 7 + + 3 0 ) ( 7 (
" "
4 > & ( . * * # # ? , / 3 0 - . 1 6 + 2 5 $ ( 4 4 * * , 4 0 : : & , 0 : : & ( 2 . 1 . 0 e 1 ! 0 / 0 : 5 ! d # 9 & 9 # : > d ' d # & : ? 5 ) & : d # & & & # d 3 0 / 0 : 5 # : # * ) ( # 4 > " 7 ? & 0 : - 1 : - 1 : = / ! 0 0 ! , , 0 ! 0 0 ! 0 0 , 2 0 ! , = , ! 0 = - = - ! + 2 ! 0 0 ! d d 8 ' ! 8 ' ! 4
application circuit 4 ht9302 series rev. 1.20 20 september 30, 2002
+ 2 5 $ ( , / 3 0 - . 1 6 / 0 / = 4 7 + + 3 7 + + 3 7 + + 3 7 + + 3 c + . 4 7 + + 3 # 8 d + , 0 / 0 4 1 , , , ( : 9 9 + + * ) ( , / + - , 0 , , , , - ! ! , - , - 2
, + 4 / . 7 ( ) ( 3 + 1 , + 2 ! 7 + + 3 (
" "
4 > & ( . * * # # ? 4 4 * * , 4 0 : : & , 0 : : & ( 3 - = / 3 j & # 1 0 2 - 4 0 e 1 ! 0 . 0 : 5 ! d # 9 & 9 # : > d ' d # & : ? 5 ) & : d # & & & # d 3 0 / 0 : 5 # : # * ) ( # 4 > " 7 ? & 0 : - 1 : - 1 : + 2 ! = / ! 0 0 ! , , 0 ! , 2 0 ! , = , ! 0 = 0 0 , , ! , , ! 0 = 0 = 0 0 ! , , 0 ! , , 0 ! - - ! 0 ! - - 0 ! 0 0 ! + 2 ! - = - ! 0 = 0 , 0 0 ! d d 8 ' ! 8 ' !
application circuit 5 ht9302 series rev. 1.20 21 september 30, 2002 + * ) ( 4 * * , 4 0 : : & , 0 : : & ( / . - = / 3 j & # 4 / 0 , / = 4 7 + + 3 7 + + 3 + , 1 , , , ( : 9 9 - , 0 : 2 + ( - + / . ! ! , - , - 1 3 0 7 ( - . 1 6 , / 3 0 + 2 5 $ ( 5 ! d # 9 & 9 # : > d ' d # & : ? 5 ) & : d # & & & # d 3 0 / 0 : 5 # : # * ) ( # 4 > " 7 ? & 4 - 1 : - 1 : = / ! 0 0 ! 0 0 ! , , 0 ! , 2 0 ! 0 0 , = , ! 0 = + 2 ! - = - ! 0 0 ! d d 8 ' ! 8 ' !
package information 16-pin dip (300mil) outline dimensions symbol dimensions in mil min. nom. max. a 745 775 b 240 260 c 125 135 d 125 145 e16 20 f50 70 g 100 h 295 315 i 335 375 0
15
ht9302 series rev. 1.20 22 september 30, 2002 . 1 3 % "

18-pin dip (300mil) outline dimensions symbol dimensions in mil min. nom. max. a 895 915 b 240 260 c 125 135 d 125 145 e16 20 f50 70 g 100 h 295 315 i 335 375 0
15
ht9302 series rev. 1.20 23 september 30, 2002 3 0 1 % "

20-pin dip (300mil) outline dimensions symbol dimensions in mil min. nom. max. a 1020 1045 b 240 260 c 125 135 d 125 145 e16 20 f50 70 g 100 h 295 315 i 335 375 0
15
ht9302 series rev. 1.20 24 september 30, 2002 , 0 0 % "

22-pin skdip (300mil) outline dimensions symbol dimensions in mil min. nom. max. a 1085 1105 b 253 263 c 125 135 d 125 145 e16 20 f50 70 g 100 h 295 315 i 330 375 0
15
ht9302 series rev. 1.20 25 september 30, 2002 , , , % "

24-pin skdip (300mil) outline dimensions symbol dimensions in mil min. nom. max. a 1235 1265 b 255 265 c 125 135 d 125 145 e16 20 f50 70 g 100 h 295 315 i 345 360 0
15
ht9302 series rev. 1.20 26 september 30, 2002 , + - , % "

ht9302 series rev. 1.20 27 september 30, 2002 copyright 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 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. holtek semiconductor inc. (headquarters) no.3, creation rd. ii, science-based industrial park, hsinchu, taiwan tel: 886-3-563-1999 fax: 886-3-563-1189 http://www.holtek.com.tw holtek semiconductor inc. (sales office) 11f, no.576, sec.7 chung hsiao e. rd., taipei, taiwan tel: 886-2-2782-9635 fax: 886-2-2782-9636 fax: 886-2-2782-7128 (international sales hotline) holtek semiconductor (shanghai) inc. 7th floor, building 2, no.889, yi shan rd., shanghai, china tel: 021-6485-5560 fax: 021-6485-0313 http://www.holtek.com.cn holtek semiconductor (hong kong) ltd. rm.711, tower 2, cheung sha wan plaza, 833 cheung sha wan rd., kowloon, hong kong tel: 852-2-745-8288 fax: 852-2-742-8657 holmate semiconductor, inc. 48531 warm springs boulevard, suite 413, fremont, ca 94539 tel: 510-252-9880 fax: 510-252-9885 http://www.holmate.com

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