SC9200 DTMF GENERATOR WITH MICRO-PROCESSOR INTERFACE DESCRIPTION The SC9200 tone generators are designed for µC interfaces. They can be instructed by a µC to generate 16 dual tones and 8 single tones from the DTMF pin. The SC9200A/AS provides a serial mode whereas the SC9200B/BS contains a selectable serial/parallel mode interface for SOP-8 DIP-8 various applications FEATURES * Operating voltage: 2.0V~5.5V * Serial mode for the SC9200A/AS SOP-14 DIP-14 * Serial/parallel mode for the SC9200B/BS * Low standby current * Low total harmonic distortion * 3.58MHz crystal or ceramic resonator APPLICATIONS ORDERING INFORMATION Part No. Package SC9200A DIP-8-300-2.54 * Security systems SC9200B DIP-14-300-2.54 * Home automation SC9200AS SOP-8-225-1.27 * Remote control through telephone lines SC9200BS SOP-14-225-1.27 * Communication system, etc. BLOCK DIAGRAM HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.08.03 Page 1 of 10 SC9200 ABSOLUTE MAXIMUM RATING Characteristic Symbol Ratings Unit Supply Voltage VSS -0.3~6 V Input Voltage VIN VSS-0.3~VDD+0.3 V Storage Temperature Tstg -50~125 °C Operating Temperature Topr -20~75 °C ELECTRICAL CHARACTERISTICS Characteristics Operating Voltage Symbol VDD Test Conditions VDD -2.5V Operating Current IDD Conditions 5.0V Typ. Max. Unit -- 5.5 V -- 240 2500 -- 950 3000 Serial 1.8 Parallel 2.0 S/P =VDD, D0~D3=VSS, CE Min. =VSS, No load µA Low Input Voltage VIL -- -- VSS -- 0.2VDD V High Input Voltage VIH -- -- 0.8VDD -- VDD V Standby Current ISTB Pull-high Resistance DTMF Output Delay Time (Parallel Mode) RP tDE 2.5V S/P , CE =VDD, -- -- 1 5.0V No load -- -- 2 120 180 270 45 68 100 -- tUP+6 tUP+8 ms 0.45VDD -- 0.75VDD V 2.5V 5.0V VOL=0V 5V -- kΩ DTMF Output DC Level VTDC DTMF Sink Current ITOL 2.5V VDTMF=0.5V -0.1 -- -- mA DTMF Output AC Level VTAC 2.5V Row group, RL=5kΩ 0.12 0.15 0.18 Vrms Column Pre-emphasis ACR 2.5V Row group=0dB 1 2 3 dB DTMF Output Load RL 2.5V tHD≤-23dB 5 -- -- kΩ Tone Signal Distortion tHD 2.5V RL=5kΩ -- -30 -23 dB fCLK -- -- 100 500 kHz -- -- 10 ms 3.5759 3.5759 3.5831 MHz Clock Input Rate (Serial Mode) Oscillator Starting Time (When CE is low) 2V~5.5V DTMF Output µA -The time from CE tUP 5.0V falling edge to normal oscillator operation System Frequency fOSC -- Crystal=3.5795MHz HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.08.03 Page 2 of 10 SC9200 PIN CONFIGURATION PIN DESCRIPTION Pin NO. Pin Name Description DIP-8 DIP-14 SOP-8 SOP-14 1 1 CE Chip enable, active low. 2 2 X2 The system oscillator consists of an inverter, a bias resistor, and the 3 3 X1 required load capacitor on chip. The oscillator function can be implemented by Connect a standard 3.579545MHz crystal to the X1 and X2 terminals. 4 4 VSS Negative power supply. 5 NC No connection. Data inputs for the parallel mode. 6~9 D0~D3 When the IC is operating in the serial mode, the data input terminals (D0~D3) are included with a pull-high resistor. When the IC is operating in the parallel mode, these pins become floating. Operation mode selection input 10 S/P S/P =”H”: Parallel mode S/P =”L”: Serial mode Data synchronous clock input for the serial mode. When the IC is 5 11 CLK operating in the parallel mode, the input terminal (CLK) is included with a pull-high resistor. When the IC is operating in the serial mode, this pin becomes floating. Data input terminal for the serial mode. When the IC is operating in the 6 12 DATA parallel mode, the input terminal (DATA) is included with a pull-high resistor. When the IC is operating in the serial mode, this pin becomes floating. 7 13 DTMF 8 14 VDD Output terminal of the DTMF signal. Positive power supply, 2.0V~5.5V for normal operation. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.08.03 Page 3 of 10 SC9200 FUNCTIONAL DESCRIPTION The SC9200 are DTMF generators for µC interfaces. They are controlled by a µC in the serial mode. 1. Serial mode (SC9200) The SC9200 employ a data input, a 5-bit code, and a synchronous clock to transmit a DTMF signal. The relationship between the digital codes and the tone output frequency is shown in Table 1 as for the control timing diagram, refer to Figure 1. Table 1: Digits vs. input data vs. tone output frequency (serial mode) Digit D4 D3 D2 D1 D0 Tone Output Frequency (Hz) 1 0 0 0 0 1 697+1209 2 0 0 0 1 0 697+1336 3 0 0 0 1 1 697+1477 4 0 0 1 0 0 770+1209 5 0 0 1 0 1 770+1336 6 0 0 1 1 0 770+1477 7 0 0 1 1 1 852+1209 8 0 1 0 0 0 852+1336 9 0 1 0 0 1 852+1477 0 0 1 0 1 0 941+1336 * 0 1 0 1 1 941+1209 # 0 1 1 0 0 941+1477 A 0 1 1 0 1 697+1633 B 0 1 1 1 0 770+1633 C 0 1 1 1 1 852+1633 D 0 0 0 0 0 941+1633 -- 1 0 0 0 0 697 -- 1 0 0 0 1 770 -- 1 0 0 1 0 852 -- 1 0 0 1 1 941 -- 1 0 1 0 0 1209 -- 1 0 1 0 1 1336 -- 1 0 1 1 0 1477 -- 1 0 1 1 1 1633 DTMF OFF 1 1 1 1 1 -- *Notes: The codes not listed in Table 1 are not used D4 is MSB. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.08.03 Page 4 of 10 SC9200 Figure 1 2. Parallel mode (SC9200B/BS) The SC9200B/BS provides four data inputs D0~D3 to generate their corresponding DTMF signals. The S/P has to be connected high to select the parallel operation mode. Then the input data codes should be determined. Finally, the CE is connected low to transmit the DTMF signal from the DTMF pin. The TDE time (about 6ms) will be delayed from the CE falling edge to the DTMF signal output. The relationship between the digital codes and the tone output frequency is illustrated in Table 2. As for the control timing diagram, see Fiigure 2. When the system is operating in the parallel mode, D0~D3 are all in the floating state. Thus, these data input pins should not float. Table 2: Digits vs. input data vs. tone output frequency (parallel mode) Digit D3 D2 D1 D0 Tone Output Frequency 1 0 0 0 1 697+1209 2 0 0 1 0 697+1336 3 0 0 1 1 697+1477 4 0 1 0 0 770+1209 5 0 1 0 1 770+1336 6 0 1 1 0 770+1477 7 0 1 1 1 852+1209 8 1 0 0 0 852+1336 9 1 0 0 1 852+1477 0 1 0 1 0 941+1336 * 1 0 1 1 941+1209 # 1 1 0 0 941+1477 A 1 1 0 1 697+1633 B 1 1 1 0 770+1633 C 1 1 1 1 852+1633 D 0 0 0 0 941+1633 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.08.03 Page 5 of 10 SC9200 Figure 1 APPLICATION CIRCUIT Serial mode Serial/parallel mode HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.08.03 Page 6 of 10 SC9200 PACKAGE OUTLINE DIP-8-300-2.54 UNIT: mm 0.25±0.05 6.35 ± 0.25 7.62 ± 0.30 2.54 1.52 15 degree 4.36MAX +0.4 9.40 -0.3 3.00MIN 0.5MIN +0.35 0.89 -0.30 0.46 DIP-14-300-2.54 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn UNIT: mm REV:2.0 2004.08.03 Page 7 of 10 SC9200 PACKAGE OUTLINE (Continued) 1.55±0.20 0.3 1.27 3.9±0.3 5.72±0.3 UNIT: mm 6.0±0.4 SOP-8-225-1.27 SOP-14-225-1.27 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn UNIT: mm REV:2.0 2004.08.03 Page 8 of 10 SC9200 HANDLING MOS DEVICES: Electrostatic charges can exist in many things. All of our MOS devices are internally protected against electrostatic discharge but they can be damaged if the following precautions are not taken: • Persons at a work bench should be earthed via a wrist strap. • Equipment cases should be earthed. • All tools used during assembly, including soldering tools and solder baths, must be earthed. • MOS devices should be packed for dispatch in antistatic/conductive containers. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:2.0 2004.08.03 Page 9 of 10