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M7206 Datasheet(PDF) 2 Page - Unisonic Technologies |
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M7206 Datasheet(HTML) 2 Page - Unisonic Technologies |
2 / 8 page M7206 CMOS IC UNISONICTECHNOLOGIESCO.,LTD 2 of 8 www.unisonic.com.tw QW-R502-Q37.A PIN CONFIGURATIONS PIN DESCRIPTION PIN NAME TYPE PIN DESCRIPTION 1 BZ O Piezo buzzer output. Whenever BZEN is connected to V+ and differential inputs are tied together, BZ will generate a 5KHz sound output. 2 BZEN I Buzzer control slave input. This pin is internally pulled-down to TEST.See BZ 3 TEST - Digital GND. Pull high to V+ all LCD segments will be activated. 4 OSC3 - Crystal oscillator connection. (RC) 5 HOLD O Hold control pin. When it receives a negative mud pulse, display hold; Receive again then function disabled. 6 OSC2 - Crystal oscillator connection. (output) 7 OSC1 - Crystal oscillator connection. (input) 8 V+ P Positive supply voltage 9~15 A1~G1 O LCD segment drive (unit) 16~21、32 A2~G2 O LCD segment drive (decade) 22~25, 29~31 A3~G3 O LCD segment drive (hundred) 26 AB4 O LCD segment drive (thousand). When the readout exceeds 1999, AB4 drive the segment of thousand to display ‘1’ for showing excess. 27 POL O LCD segment drive. (minus ‘-‘) 28 BP O LCD common drive. 33 LOWB O LCD segment drive. (low battery) 34 V- P Negative supply voltage. Connecting to battery negative terminal. 35 INT - Integrator output. 36 BUFF - Integration register connection 37 A/Z - Auto-zero capacitor connection 38 IN LO I Analog low input signal 39 IN HI I Analog high input signal 40 COMMON O Set the common-mode voltage for the system 41 C-REF- - Negative capacitor connection for on-chip A/D converter 42 C-REF+ - Positive capacitor connection for on-chip A/D converter 43 REF LO I Low differential reference input connection. 44 REF HI I High differential reference input connection |
Similar Part No. - M7206_15 |
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