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UNIVERSAL 15 MEMORY DIALER
S5T5855A
INTRODUCTION
The S5T5855A is 15 memory Tone/pulse switchable dialer with 32 digit redial memory. 16 digit indirect 10 memory and 16 digit direct 4 memory are possible. The Flash time is selectable on the keypad Also, Hands-Free and Hold functions are controlled on the keypad. The S5T5855A can fulfill all the standards of each country.
22-DIP-400
FEATURES
* * * * * * * * * * * * Flash Time selectable on the keyboard (100, 303, 604 mS) Hands-Free and Hold functions Tone/Pulse switchable 16 digit indirect (Two-touch) 10 memory (Pulse: 16 digit, Tone: 15 digit) 16 digit direct (One-touch) 4 memory (Pulse: 16 digit, Tone: 15 digit) Uses 3.579545MHz Color burst Crystal or ceramic resonator Pulse rate selectable. (10 pps, 20 pps) Make/Break ratio selectable (40: 60, 33 : 66) Single tone enable for test Tone (T/*) key function (Pulse Tone) Redial function (Pulse : 32 digit, Tone: 31 digit) Pin compatible with S5T5820C, S5T0080A, and S5T5850
ORDERING INFORMATION
Device S5T5855A01-D0B0 Package HFD 22-DIP-400 O HOLD O EM O Function Flash Time Selectable M/B Ratio Selectable PPS Selectable
*HFD : Hands Free Dialing Function *HOLD : Hold for Melody *EM : Emergency Memory
1
S5T5855A
UNIVERSAL 15 MEMORY DIALER
BLOCK DIAGRAM
VDD
OSCI OSCO M/B OSC DIVIDER
M/B COUNTER
PULSE COUNTER
DP
HS CONTROL CIRCUIT MDS/DRS
SYSTEM CLOCK
TIMING COUNTER
DEBOUNCE CIRCUIT
X' MUTE WRITE/READ ADDRESS COUNTER 4 REDIAL RAM DATA LATCH
C1 C2 C3 C4 C5 R1 R2 R3 R4 R5 KEY INPUT INTERFACE CIRCUIT
4
RECALL/LOCATION LATCH & ADDRESS COUNTER
14 MEMORY STORE RAM
ROW, COLUMN SINEWAVE COUNTER & D/A CONVERTER
TONE
HANDS FREE & HOLD CONTROL OUTPUT
HFO
VSS
HDO
2
UNIVERSAL 15 MEMORY DIALER
S5T5855A
PIN CONFIGURATION
R5 R1 R2 R3 R4 HS M/B MDS/DRS OSCI OSCO C5
1 2 3 4 5 6 7 8 9 10 11 S5T5855A
22 21 20 19 18 17 16 15 14 13 12
HFO C4 C3 C2 C1 DP V+ X' MUTE VSS VDD HDO
ARRANGEMENT OF KEY BOARD 1 4 7 T/* HFI 2 5 8 0 HDI 3 6 9 # F1 ST R/L RD/P F3 F2 EM1 EM2 EM3 EM4 NU
- RD/P - ST - R/L - F1 - F2 - F3 - HFI - HDI - T/* -# - EMI - Nu
: Redial/Pause : Store : Recall/Location : Flash Time (100ms) : Flash Time (303ms) : Flash Time (604md) : Hands-Free Dialing Key Input : Hold Key Input : Pulse Tone Mode : RD/P Function in Pulse Mode Data in Tone Mode : Direct Memory Location I = 1, 2, 3, 4. : Not Used Key
SELECTION FUNCTION PIN MDS/DRS MAKE/BREAK CONNECTION VDD OPEN VSS VDD VSS FUNCTION PULSE MODE/20 PPS PULSE MODE/10 PPS TONE MODE 1 : 2 (M : B) 2 : 3 (M : B)
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S5T5855A
UNIVERSAL 15 MEMORY DIALER
PIN DESCRIPTION
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Symbol R5 R1 R2 R3 R4 HS M/B MDS/DRS OSCI OSCO C5 HDO VDD VSS TONE X'MUTE DP C1 C2 C3 C4 HFO O Hands-free control output I Column key input I I I I O I O S S O O O Hook switch Make/Break select Mode & dial pulse ratio select pin Oscillator input Oscillator output Column 5 input Hold function control output (+) Power (-) Power Tone output X'MUTE Output (N-channel open drain) Dial pulse output (C-MOS inverter output) I Row key input I/O Description
ABSOLUTE MAXIMUM RATINGS
Characteristic Supply Voltage Input Voltage Output Voltage Power Dissipation Operating Temperature Storage Temperature Symbol VDD VI VO PD TOPR TSTG Value - 0.3 to 7.0 - 0.2 to VDD + 0.3 - 0.3 to VDD + 0.3 500 - 20 to + 70 - 55 to + 150 Unit V V V mW C C
4
UNIVERSAL 15 MEMORY DIALER
S5T5855A
ELECTRICAL CHARACTERISTICS
(VDD = 3.5V, VSS = 0V, Ta = 25C , fosc = 3.579545MHz) Characteristic Operating Voltage Memory Retention Voltage Memory Retention Current Operating Current Standby Current Output Sink Current (DP, X'MUTE) Output Current Symbol VDD VMR IMR IDD(PULSE) IDD(TONE) ISB IO(SINK)1 IO(SINK)2 IOH IOL Input Voltage VIH VIL II1 II2 Column to Row Tone Ratio Row Tone Output Tone Distortion Valid Key Entry Time Pause Time Pulse Interdigit Pause Time Tone interdigit pause time Tone Duration Pulse to tone auto pause time dBcr VOL = 0.4V VOL = 0.4V, VDD = 2.5V VOH = 0.3V VOL = 0.4V R1 to R5, M/B, HS C1 to C5, MDS/RDS, HS R1 to R5, VIN = VSS R1 to R5, VIN = VSS VDD = 2.5V Tone Mode All output unload Test conditions - - HS = VDD = 1.0V Pulse Mode Tone Mode HS = VSS Min. 2.0 1.0 - - - - 1.7 0.5 1.8 1.7 0.8VDD VSS - - 1 -18 -18 - - - - - - - - - - - - Typ. - - 0.05 0.1 0.4 10 5.0 1.5 5.2 5.1 - - - - 2 - - 1 33.3 3.6 600 800 103.5 101 3.6 33.5/67.0 40.2/60.3 16.7/33.5 20.1/30.2 Max. 6.0 - 0.1 0.3 0.7 50 - - - - VDD 0.2VDD 50 30 3 -16 -16 4 - - - - - - - - - - - mS mS dBV % mS Sec A mA mA mA mA V V A A dB V uA mA Unit
Input Current
VOH(TONE) RL = 5.0Kohm VOL(TONE) VDD = 2.5V, RL = 5.0Kohm THD tKD tPA tPIDP1 tPIDP2 tTIDP tTD tPTPA P Key Depress MDS/DRS = VDD (20 PPS) MDS/DRS = OPEN(10 PPS) MDS/DRS = VSS - - M/B = VDD MDS/DRS = OPEN (10 PPS) M/B = V SS MDS/DRS = VDD (20 PPS) M/B = VDD M/B = VSS - -
Make/Break Time
tM/B
5
S5T5855A
UNIVERSAL 15 MEMORY DIALER
Characteristic
Symbol
Test conditions MDS/DRS = VDD, M/B = VDD
Min. - - - - - - - -
Typ. 17 37 20 30 3.0 100 303 604
Max. - - - - - - - -
Unit
Pre-digit Pause Time
tPTPA
MDS/DRS = OPEN, M/B = VDD MDS/DRS = VDD, M/B = VSS MDS/DRS = OPEN, M/B = VSS
mS
Pulse to X'MUTE overlap time tPMO
- F1 Key Depress
mS
Flash Time
tFL
F2 Key Depress F3 Key Depress
mS
APPLICATION INFORMATION KEY DESCRIPTION * * 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 These are Tone/Pulse dialing signal keys in normal mode. T/ Pulse Mode : Pulse to Tone Switching Key Tone Mode : Data Key # Pulse Mode : No Operation Tone Mode : Data key EM1, EM2, EM3, EM4 DIRECT REPERTORY DIALING KEY. The cascade 32 digit dialing is available and the exceed 32 digit dialing accepted one by one after all 32 digits is dialed out. In store mode, pressing EM1 to EM4 key will cause the 16 digits of buffer memory storing to corresponding repertory memory. RD/P KEY If press this key first after off- hook, it will operate as a redial key, otherwise it will operate as a pause key. ST : Store This key will accept as store key if press it first key after off or on - hook. The store mode will be released by pressing this key again or hooking once. R/L This key will be allowed recall or location selection in indirect memory operation
*
*
* *
*
6
UNIVERSAL 15 MEMORY DIALER
S5T5855A
*
F : Flash (i = 1, 2,3) If the Flash key pressed, DP and X'MUTE will be forced to low during the t FL (Flash Time) F1 F2 F3 100mS 303mS 604mS Flach time selectable on the keyboard
*
HFI Hands-Free dialing input. Hands-Free dialing output controlled by the keyboard (HFl) HDI Hold function input. Hold function controlled by the keyboard (HDl). The output will control the melody enable.
*
KEYBOARD AND SWITCHE OPERATION * SYMBOL DEFINITION DP = PULSE DATA: 0,1,2,3,4,5,6,7,8,9,F, PAUSE Dt = TONE DATA: 0,1,2,3,4,5,6,7,8,9, *,#,F, PAUSE EM1 ~ EM4 = DIRECT MEMORY REC = RECALL LOC = LOCATION ZiZiZi = Conversation Mode OFF= OFF-HOOK ON = ON-HOOK = INPUT LEVEL LOW TO HIGH = INPUT LEVEL HIGH TO LOW OPERATION MANUAL - NORMAL DIALING IN PULSE MODE OFF: Dp,-, D p, : ZiZiZi: ON - NORMAL DIALING IN TONE MODE OFF: Dt,-, Dt, : ZiZiZi : ON - NORMAL DIALING FROM PULSE TO TONE VIA T/* KEY OFF: Dp,-, D p, T/*, Dt, : ZiZiZi : ON - NORMAL DIALING FROM PULSE TO TONE VIA MDS/DRS SWITCH OFF: Dp,-, D p, MDS/DRS, , Dt , ----,Dt : ZiZiZi : ON - REDIAL OFF: RD/P : ZiZiZi : ON
*
NOTES : 1.All the key input will be ignored during the redial. 2.if the dialing digits exceed 32 digits, the redialing operation will be inhibited) 3.Cascade dialing (normal dialing after redialing) will be accepted.
7
S5T5855A
UNIVERSAL 15 MEMORY DIALER
- REPERTORY DIALING FOR CASCADED MEMORY OFF:EMI (i =1,2,3,4) : ZiZiZi : ON: DIRECT OFF: REC, LOCx (x=1,2,-, 0): ZiZiZi : ON : INDIRECT - REPERTORY DIALING FOR CASCADED MEMORY The cascade 32 digit dialing is available and exceed 32 digit dialing accepted one by one after all 32 digits are dialed out. NORMAL DIALING AFTER REPERTORY DIALING OFF: EMI (i = 1,2,3,4) or REC, LOCx (x = 1,2,-, 0), Dg,-, Dg, : ZiZiZi : ON - STORE ON/OFF, ST, Dg,-, Dg EMI OR LOCx Store mode will be released by pressing store key again or hooking once. - STORE ON/OFF, ST, Dg,-, Dg, EMI OR LOCx Store mode will be released by pressing store key again or hooking once. - CHANGING STORE DATA VIA F KEY ON/OFF, ST, D1 ,D2,D3,F,D4,D5,D6, -, Dn, EMI or LOCx In above dialing sequence, the storing data are D4,D5,D6,Dn. - HANDS FREE DIALING ON : HFI, D1, D2,-, Dn, : OFF : ZiZiZi : ON ON : HFI, D1, D2,-, Dn, HFI,RD - HOLD FUNCTION This pin controls the melody output enable and disable. (Refer to state diagram of hands-free dialing & hold function) TRUTH TABLE OF HANDS-FREE INPUT & HOLD FUNCTION NO
1 2 3 4 5 6 7 8 9 10 11 12 13
CURRENT STATE HOOK STATE
ON/OFF HOOK ON HOOK OFF HOOK ON HOOK OFF HOOK OFF HOOK OFF HOOK ON HOOK ON HOOK ON HOOK OFF HOOK OFF HOOK ON/OFF HOOK
HFO
L H H X X L H L H H X X X
HDO
L L L X H L L X L H L H H
INPUT
HFI KEY IN HFI KEY IN HFI KEY IN OFF HOOK ON HOOK ON HOOK ON HOOK HDI KEY IN HDI KEY IN HDI KEY IN HDI KEY IN HDI KEY IN HDI KEY IN
NEXT STATE HFO
H L L L P L H L H H P P P
HDO
L L L L P L L P H L H L H
DIALING
YES NO YES YES MELODY NO YES NO MELODY YES MELODY YES MELODY
ON
ON ON ON
*Comment : X : Don' Care t P : Previous State
8
UNIVERSAL 15 MEMORY DIALER
S5T5855A
TIMING DIAGRAM
PULSE MODE
HS
KEY INPUT 1 2 F RD
tM
DP
tB tPDPA tPMO tFL tPMO tPIDP
X' MUTE
TONE MODE
HS
KEY INPUT 1 P 3 RD
tPA
X' MUTE
TONE
tPA tTD
9
S5T5855A
UNIVERSAL 15 MEMORY DIALER
PULSE TO TONE DIALING
HS
KEY INPUT 1 2 3 4
MDS/DRS
DP
tPTPA
X' MUTE
TONE
3
4
HANDS-FREE DIALING & HOLD FUNCTION
HS X' MUTE
HDI KEY INPUT
HDO KEY INPUT 1 2 5 1
DP HDI KEY INPUT
HDO
10
TIP
A1156 Z-1 R20 6.2K C8 104 R26 10K C9 220 1.5-T1 3H R17 330 R18 100K D2 R25 5.1K R24 620
R1
2M
RING
R2
APPLICATION CIRCUIT
BRIDGE-D
Z-2 7V
150K
C1 1F-250V
SW1
1
R5
HFO
C4 C3 C2
C5 22 470
D1
2
R1 R2 R3
21 20 19
R12 470K R13 120K D4 D3 R22 43 R11 47K R21 150
1 VL CI CO
R35 33K R36 330
UNIVERSAL 15 MEMORY DIALER
R4 300K
3 4 RXO RFO 14
C33 103 R37 C14 3.3K 0.33
VCC 15 13
C22 22
16
R3 470K
2
R5 1M
5
R4 HS DP MUTE C1
18 17
R23 15
Q4 C945
3
Q2 C945 SW2
6 7 MB MODE OCI OCO HOLDO
R16 47K C10 22
R6 470K
C4 104
16 15 14 MUTE VR GND
100K C17 1 R14 20K R15 5.1K C6 104
4 BIAS 5 MFI MIC MIC+ TOF 11 CC 6 7 8 12
RXI
SW3
8 TONE GND VDD 12
Q5 C945 MEMORY KS531A D5 R19 8.2K
9 10 11 KIT 13
C7 123
C16 104 R39 20K
VR 100K
10
R38 390K
C15 330
R8 6.8K
Q3 C1009Y R10 100K
S5T5855A
3 2 1
9
MIC R20 104
8
Mute IC5
PIEZO
7
1 2 3 ST EM1 4 5 6 R/L EM2 7 8 9 RD/P EM3 T/' 0 # HR HDI F1 F2 F3 EM4
6
5
S5T5855A
8
Out
7
6
5
GND
R33 100K
SW4
C2 10F
TIP RC AVA OUT S1T2418G01
S1T8602B INT1 INT2 OUT VCC
R40 1K R41 560 R42 3K
RING GND SWP OFC
R9 22K
1
2
3
4
1
C21 4.7
2
3
C11331 R34 51K
4
C18 1000
C19 22
104 C2
S5T5855A
11
S5T5855A
UNIVERSAL 15 MEMORY DIALER
NOTES
12

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