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M38066MBA-XXXFP Datasheet(PDF) 4 Page - Renesas Technology Corp |
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M38066MBA-XXXFP Datasheet(HTML) 4 Page - Renesas Technology Corp |
4 / 59 page Rev.1.20 Dec 24, 2003 page 4 of 57 3822 Group (A ver.) PIN DESCRIPTION Table 1 Pin description (1) VCC, VSS Function Pin Name Function except a port function •LCD segment output pins Power source •Apply voltage of power source to VCC, and 0 V to VSS. (For the limits of VCC, refer to “Recom- mended operating conditions”). VREF AVSS RESET XIN XOUT VL1–VL3 COM0–COM3 SEG0–SEG11 P00/SEG16– P07/SEG23 P10/SEG24– P17/SEG31 P20 – P27 P34/SEG12 – P37/SEG15 Analog refer- ence voltage Analog power source Reset input Clock input Clock output LCD power source Common output Segment output I/O port P0 I/O port P1 I/O port P2 •Reference voltage input pin for A-D converter. •GND input pin for A-D converter. •Connect to VSS. •Reset input pin for active “L”. •Input and output pins for the main clock generating circuit. •Feedback resistor is built in between XIN pin and XOUT pin. •Connect a ceramic resonator or a quartz-crystal oscillator between the XIN and XOUT pins to set the oscillation frequency. •If an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open. •This clock is used as the oscillating source of system clock. •Input 0 ≤ VL1 ≤ VL2 ≤ VL3 ≤ VCC voltage. •Input 0 – VL3 voltage to LCD. •LCD common output pins. •COM2 and COM3 are not used at 1/2 duty ratio. •COM3 is not used at 1/3 duty ratio. •LCD segment output pins. •8-bit I/O port. •CMOS compatible input level. •CMOS 3-state output structure. •I/O direction register allows each port to be individually programmed as either input or output. •Pull-down control is enabled. •8-bit I/O port. •CMOS compatible input level. •CMOS 3-state output structure. •I/O direction register allows each pin to be individually programmed as either input or output. •Pull-up control is enabled. •4-bit input port. •CMOS compatible input level. •Pull-down control is enabled. •Key input (key-on wake-up) interrupt input pins •LCD segment output pins Input port P3 |
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