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qs? 2.4ghz-2.480ghz ? g pio, spi speake microphone {??? high acoustic fidelity sound {??.1 ? 75db >? ? 0.01% vj 25.01x21.02x1.8mm peng'r tel:13590282537 0755-83611011 qq:1825598678 website:www.chenbingdom.com CSR57F68 free datasheet http:///
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pin symb i/o description 1 pio1 bi-directional tx en 2 pio2 bi-directional speaker output positive (left side) 3 vol+ bi-directional speaker output negative (right side) 4 vol- bi-directional speaker output positive (right side) 5 up bi-directional ground 6 down bi-directional programmable input/output line 7 power bi-directional programmable input/output line 8 +1.8v power +1.8v supply 9 gnd bi-directional programmable input/output line 10 bat battery terminal+ve 3.3-4.2v 11 led1 cmos input synchronous data input 12 led2 pen drain output synchronous data sync 13 mic pen drain output synchronous data clock 14 spbn analogue output speaker output l negative 15 spbp analogue output speaker output l positive 16 span analogue output speaker output r nositive 17 spap analogue output speaker output r positive 18 gnd gnd ground 19 mosi cmos input with weak internal pull-down serial peripheral interface data input 20 clk cmos input with weak internal pull-down serial peripheral interface clock 21 cs# cmos input with weak internal pull-down chip select for serial peripheral interface, active low 22 miso cmos input with weak internal pull-down serial peripheral interface data output 23 rts cmosoutput,tri-state,with week pull-up uart request to send active low 24 vdd-chg charger input lithium iion/polymer battery free datasheet http:///
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