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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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STLED325 数据表(PDF) 57 Page - STMicroelectronics |
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STLED325 数据表(HTML) 57 Page - STMicroelectronics |
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57 / 62 page  STLED325 Application information Doc ID 17576 Rev 1 57/62 10.3 Application diagram Figure 22. Application schematic Resistors: RSET = external resistor for current setting R1 = 1-10 KO SDA external pull-up resistor R2 = 1-10 KO SCL external pull-up resistor R3 = 1-10 KO IRQ_N external pull-up resistor R4-R5 = 10 KO external key-matrix pull-down resistors Capacitors: C1 = 33 µF (25 V) electrolytic C2 = 0.01-0.1µF (25V) ceramic Creg=0.1 uF CL1 = CL2 = 25pF Diodes D1-D8 = 1N4148 Supply voltage VCC = 5 V ± 10% AM08725V1 Main CPU Keyscan (8x2 m atrix) SCL SDA STLED 325 ISET LE D 4 -D igit 7 -segm ent (+ dot -point) Display panel With som e individual LE D s RSET KEY1-KEY 2 4 SEG 1/KS 1 -SEG 8/KS8 DIG 1-DIG 4 R1 C1 C2 R4 R5 D1 D2 D3 D4 D5 D6 D7 D8 GND GND GND R2 IR rem ote control sensor IR _IN IRQ _N STBY R3 Crystal (32.768KHz) XI XO CL1 CL2 READY DIG 5 VBAT W AKE_UP MUTE VCC Creg |
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