BL1102series Description BL1102 Series is a single chip dialer IC using Si-gate CMOS process, it can provide signal for either Pulse or double Tone with multi-frequency dialing. It features key tone and hands-free dialing, “0,”9” dialing latch with first number, 2array 32-digit number memory re-dialing, and 13-array 16-digit number memory etc. Features Operating voltage: 2.0 ~ 5.5V Double Tone/Pulse selection with switch, pulse can be switched to double tone by pressing*/T key. 3.579545MHz crystal or ceramic resonator is used Power on reset on chip Minimum tone output duration: 100 ms 2 arrays of 32-digit number memory used for re-dialing and memory dialing respectively 3 arrays of 16-digit number single key dialing memory 10 arrays of 32-digit number double key dialing memory Pulse break/make ratio can be 3/2 or 2/1, both alternative, and pulse speed is 10PPS Flash Time: 98ms, 305ms, 6000ms Minimum tone output width: 93ms, minimum tone interval: 93ms Key tone output used for confirming the key pressed is right Pulse, P→T (Pulse to Tone) can be stored as a digit in memory Easy operation with one-key redial, memory, pause and etc. Standard 5×5 keyboard used Key “Mute” used for mute talking The dial-out staring with number “0” or “9”can be locked and chosen by pin. CD-operating key 20 and 24 PDIP plastic Package Application Used as dialing circuit in telephone, complete relevant functions. Block Diagram http://www.belling.com.cn -1- Total 9 Pages 8/22/2006 Wrote by 2006 BL1102series Known from the above block diagram, it mainly made up of system clock generator, keyboard interface, data code, random storing, read/write counter, address lock and storing, system control logic, pulse generator, data/mode converter and double tone generator and other circuits. 。 Pin Description Symbol Row/colum 22 Pin 1-4,18- 24 Pin 1-4,20- I/0 I Function A valid key entry is defined by a single row being Connected to a single column n input 22 24 X T,X T 6,7 6,7 I/0 Oscillation I/O The T/P MUTE is a conventional CMOS N-channel T/P MUTE 8 8 O open drain output. When dialing and flash, the output is and will turn down the talking network. MODE 14 16 I HKS 9 9 I B/M 16 18 I VDD, VSS 1 7, 5 19, 5 I X MUTE 13 15 O HFI, HFO KT -12 12，13 14 I/O O LOCK 15 (BL1102L) 17 (BL1102AL) I DP / C5 15 (BL1102) 10 17 (BL1102A) 10 O DTMF 11 11 O NC http://www.belling.com.cn Dialing mode selection.. When pin is connected to VSS, it is double tone multi-frequency mode when it is connected to VDD; it is pulse mode (10ppS). The pin is the hook switch input HKS =1, on HOOK state, chip in sleeping mode, no operation. HKS =0, on HOOK state，enable chip on normal operation. Break/make ratio, pin selection. B/M=1, ratio is 60/40; B/M=0, ratio is 66/33. Power and power ground input Inverter output. Dialing under double tone mode, pin is high voltage；if dialing under pulse mode, the pin is low voltage. Hands-free control details can be seen in table2. Key tone signal output. The frequency is1.2KHz. Once the pin is locked, dialing starting with "0" or "9" and all the key input afterwards will become invalid. It will recover the original state after on hook LOCK Pin Function VDD “0”和“9”dialing lim it Floating Normal VSS “0”dialing lim it Not available I The DP/C5 is a conventional CMOS N-channel open drain output. Under tone state. Output will keep high; Under pulse state, output dialing pulse. Double tone multifrequency signal output -2- Total 9 Pages 8/22/2006 Wrote by 2006 BL1102series Table1. Circuit Function Type Pulse (PPS) Flash (ms) Break/Make Ratio (B/M) Hands-free Lock Control Assembly (PDIP) BL1102 10 98 / 305 / 600 Pin Selection N N 22 BL1102A 10 98 / 305 / 600 Pin Selection Y N 24 BL1102L 10 98 / 305 / 600 Pin Selection N Y 22 BL1102AL 10 98 / 305 / 600 Y Y 24 Pin Selection Table 2 － On hook ( HKS=1) Low HFI ↓ High HFI ↓ Next State Hands-free output dialing ( HFO ) High Y Low － Off hook ( HKS=0) High HFI↓ Low Y On hook ( HKS=1) － Off hook Low Y off hook ( HKS=0) Low on hook Low － off hook ( HKS=0) High On hook High Y Hook switch Current State HFO input Function Description Keyboard Operation R1 R2 R3 R4 R5 C1 1 4 7 */T C2 2 5 8 0 C3 3 6 9 # C4 EM1 EM2 EM3 SAVE DP/C5 MUTE CD F1 F2 MUTE: mute on/off P: pause CD: call disconnect RD: one-key redial S: double-key store A: 自动拨号键 * /T: *&P→T key EM1-EM3: 16 digit emergency number store disconnect SAVE: 32 位备忘存储键 F1, F2, F3: flash time 98/305/600ms store RD S A P F3 #: Invalid under pulse state while refer to double tone multifrequency of the corresponding row and column Genera l Dialing b . Dialing length is unlimited, but the re-dial is inhibited if it oversteps 32 digits Re-dialing http://www.belling.com.cn -3- Total 9 Pages 8/22/2006 Wrote by 2006 BL1102series “Pause” key operation a . Pause function can be stored in memory storage. b . Pause function can be performed when general dialing or re-dial or memory dialing. pulse → tone mode convert ( * / T ) a . If mode switch is set as pulse，output signal will be ： D1，D2，…，Dn，pause (3.1 minutes) ，D1’, D2’, …，Dn’ ( pulse ) ( tone ) b . If the mode switch is set as tone, output signal will be ： D1，D2，… ，Dn，*/T，D1’, D2’，…，Dn’ ( tone ) ( tone ) ( tone ) c . If the tone mode remains since the number is dialed out, pulse mode can be recovered as long as do on-hook operation. FLASH a . “flash” key can not be stored in the memory , but it enjoys the most high priority in all keyboard functions. b . after pressing “ flash” key，dialer will recover to the original status. Number Storage a . Dialing out D1，D2，… Dn first, then press the storage key S b . D1，D2，…，Dn numbers are stored in the position “ Mn or Ln”and dialed out. a . D1, D2，…，Dn are stored in Mn or L n but will not be dialed out. b . P and * / T key can be stored in the memory as one digit ，P key indicates “pause”. http://www.belling.com.cn -4- Total 9 Pages 8/22/2006 Wrote by 2006 BL1102series c . Once the storage function is finished or the state of hook switch changes，the storage mode will be released. Memory dialing a . One-key dial： b . Two-key dial： “Save” Key a. will be stored in the memory. b. will be dialed out. CD Press CD ，one pulse output will make call disconnected ，and make the system recover to the original status. MUTE Press “ MUTE”, mute output will be generated. Mixed dialing Dialing with “Save” key is valid only being first pressed after off hook, and the second serial numbers can be dialed after the number is sent out. Absolute Maximum Rating Parameter Symbol Rating Unit DC Supply Voltage VDD ~ VS S -0.3 ~ +7.0 V VIL VSS-0.3 V VIH VDD+0.3 V VDL VSS-0.3 V VDH VDD-0.3 V Input / output Voltage Power-Dissipation PD 120 mW Operating Temperature TOPR -20 ~+70 o C Storage Temperature TSTG -55 ~+150 o C http://www.belling.com.cn -5- Total 9 Pages 8/22/2006 Wrote by 2006 BL1102series DC Characteristic ( VDD -VSS=2.5V，Fosc=3.58MHz，Ta=25 C, all output unloaded except for being indicated.) O Parameter Operating voltage Symbol VDD Operating current IOPT IOPP tone pulse 0.6 0.2 2.0 0.5 mA IMR HKS＝1 , Ta=450OC VDD = 1.0V HKS＝0， N loaded and N 0.1 0.2 µA 0.1 5 µA Memory retention current Standby current ISB DTMF output voltage Vto Test Condition Min. tone pulse memory 2.0 2.0 1.0 Typical Max. Unit V 5.5 5.5 5.5 input Pre-emphasis DTMF distortion Row group， RL=5K Ω 130 150 170 mVrms Column/row group VDD = 2.0 ~ 5.5V 1 2 3 dB -30 -23 dB THd RL RL=5KΩ TMD (-23dB) 5 tone output DC voltage VDC VDD = 2.5~5.5V 1.1 tone output sink current ITC IPC VTO = 0.5V VPO = 0.5V 0.2 0.5 mA mA T/P mute output drive IMH VMO = 2.0V -0.5 mA /sink current I ML VMO = 0.5V 0.5 mute output drive / sink IKH VKO = 2.5V -0.5 current XMT T/P mute drive/sink current I KL VKO = 0.5v 0.5 ILH VLO = 2.0V -0.5 I LL VLO = 0.5V 0.5 voltage input low level VIL tone output outer loading resistance pulse output drive current KΩ 2.8 mA mA GND 0.3VDD voltage input high level VI H key input drive/sink IKD VI= 0V 10 30 current I KS VI= 0V 200 400 Pin control input IIS HKS，MODE ,M/B http://www.belling.com.cn 0.7VDD -6- Total 9 Pages V V VDD 80 µA ±2.5 µA 8/22/2006 Wrote by 2006 BL1102series AC characteristic Parameter Symbol Time of keyin debounce Time of key release debounce Time of key tone defer Time of One-key re-dial “pause” TKID TKRD TKD TRB Time of pulse T/P mute defer TMD Pre-digit pause TPDP pulse speed Time in data pace (auto-dial) FPR TTD Break/make ratio B/M Tone width Inter tone pace TTD TTD Time of flash pause TFB Time of Pause Key tone frequency TP F1 F2 F3 F4 F5 F6 F7 Fkt Time of one-key re-dial pause TPR Row –group frequency Column-group frequency Test Condition B/M=1 B/M=0 B/M=1 B/M=0 Min. Typical Max. Unit ------- ------- ms ms ms s -- ms --- pps ms -- % ------- ms ms -- 20 20 20 2.2 40 33.3 40 33.3 10 800 60:40 66.6:33.3 93 93 98 305 600 3.1 699 766 848 948 1216 1332 1472 1.2 -- kHz -- 600 -- ms ---- B/M=1 B/M=0 Automatic dialing Automatic dialing -------- row1 row2 row3 row4 column1 column2 column3 2 . the accuracy of oscillator frequency will effect the above –mentioned times. -7- s Hz 1 . If it is operated on the following normal situation, the oscillation parameters are recommended as: ： Rs < 100Ω , Lm: 96mH , Cm :0.02pF, Cn:5pF, C1:18pF OSC : 3.57945 Mhz ±0.02 % Total 9 Pages ms Hz NB: http://www.belling.com.cn ms 8/22/2006 Wrote by 2006 BL1102series Timing Diagram Pulse mode normal dialing timing diagram Tone mode normal timing diagram Tone mode redial timing diagram hands-free control function timing Pulse mode timing diagram Pause function timing diagram General dial: pulse→ tone (P→T) transfer timing diagram Flash function operation timing diagram http://www.belling.com.cn -8- Total 9 Pages 8/22/2006 Wrote by 2006 BL1102series “Mute” key function operation timing diagram Application Circuit http://www.belling.com.cn -9- Total 9 Pages 8/22/2006 Wrote by 2006