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MSM6546-XXGS-BK Datasheet(PDF) 4 Page - OKI electronic componets |
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MSM6546-XXGS-BK Datasheet(HTML) 4 Page - OKI electronic componets |
4 / 16 page 4/16 MSM6546/6546L ¡ Semiconductor PIN DESCRIPTIONS Symbol Type Description PORT0 (P0.0 to P0.3) I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor I/O 4-bit input-output port, I/O switchable, with/without input pull-down resistor 4-bit input port Tie to the negative pole of the battery when not used. BD O Buzzer output pin RESET I Reset pin with input pull-down resistor TEST1 Testing pins with input pull-down resistor; Tie to the negative pole of the battery. TEST2 I TEST3 XT I Connection pins for crystal oscillator XTB O VDD — 0 V power supply pin VSS1 — –1.5 V supply pin (power supply pin for –1.5 V operation) VSS2 — –3.0 V supply pin (power supply pin for –3.0 V operation) VCP — Connection pins for internal potential development capacitor VCM PORT1 (P1.1 to P1.3) PORT2 (P2.0 to P2.3) PORT3 (P3.0 to P3.3) PORT4 (P4.0 to P4.3) PORT5 (P5.0 to P5.3) PORT6 (P6.0 to P6.3) P2.0 to P2.3 External interrupt port P6.3: SCLK Shared with serial port I PORT7 (P7.0 to P7.3) P7.0: SOUT P7.1: SIN P7.2: BU/D Shared with 4-bit up/down counter P7.3: CCLK VEE — Supply pin for internal logic (constant voltage circuit output pin) VSS3 — –4.5 V supply pin SEG0 to SEG53 O LCD driver |
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