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CTR124H-000-SO Datasheet(PDF) 3 Page - Radiometrix Ltd |
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CTR124H-000-SO Datasheet(HTML) 3 Page - Radiometrix Ltd |
3 / 7 page Radiometrix Ltd Control124 page 3 Decoder Mode Control124 can be put into Decoder Mode by connecting Mode (pin 2) to Ground. MODE RST Vss A3 A2 A1 A0 RXD LATCH OSC1 OSC2 Vdd DB3 DB2 DB1 DB0 3.58MHz 5V supply Vss DA0 DA1 DA2 DA3 DA7 DA6 DA5 DA4 STB NC 470R 470R 470R 470R 470R 470R 100nF 470R 470R 470R 470R 470R 470R NC RF Vcc GND RXD Figure 3: Control124 in Decoder Mode Pin Name Input/Outp ut Description 1 RST Input Active Low Reset (Connect to user system reset or tie to Vdd) 2 LATCH Input 0V = latch DA3:D0 until next packet Vdd = clear DA3:DA0 after 150ms (no pull-up) 3 RXD Input Encoded Address and Data from RXD Output of RF Receiver 4 STB Output Positive going pulse on reception of valid data packet. 10µs duration 5 MODE Input RX=0V, TX=Vdd (no pull-up, only read at reset/power up) 6 NC - - 7 NC - - 8 VSS Supply Supply Ground 9 OSC2 Output 3.58MHz resonator1 10 OSC1 Input 3.58MHz resonator1 11 - 18 DA0 - DA7 Output 8 bits of Data A2 19 VSS Supply Supply Ground 20 VDD Supply 4.5-5.5V supply (decouple with 0.1µF close to IC) 2.0V-5.5V (low voltage version) 21 - 24 A0 - A3 Input Least significant 4 bits of Address (Internal pull-ups to Vdd)2 25 - 28 DB0 - DB3 Output Least significant 4 bits of Data B2 Notes: 1. OSC1, 2 require a 3.58MHz ceramic resonator with internal capacitors like Murata CSTLA3M58G55-B0. If a 2 pin resonator or crystal is used, then two 15pF-22pF caps are needed: one from OSC1 to 0V another from OSC2 to 0V. 100Ω series resistor between OSC2 and crystal may be required when driving low frequency crystal with High Speed (H) CTR124H version. 2. Absolute maximum source/sink current from each DA0-DA7, DB0-DB3, A0-A3 pins is 25mA Absolute maximum total current from DA0-DA7 port and DB0-DB3, A0-A3 port is 200mA 3. MODE pin is only read at reset/power up. Connect to either Vdd (Encoder) or 0V (Decoder). 4. Without external loads the CTR124 draws <2mA from 5V supply. 5. Standard version can be used down to 4V for <20MHz oscillator. Low voltage version can be used down to 2V for <4MHz oscillator. 6. High Speed, CTR124H, version should not be used with Narrow Band FM radio modules. |
Similar Part No. - CTR124H-000-SO |
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Similar Description - CTR124H-000-SO |
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