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M38747E9D-XXXFS Datasheet(PDF) 5 Page - Mitsubishi Electric Semiconductor |
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M38747E9D-XXXFS Datasheet(HTML) 5 Page - Mitsubishi Electric Semiconductor |
5 / 92 page 5 3874 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER MITSUBISHI MICROCOMPUTERS VCC, VSS PIN DESCRIPTION Functions Name Pin •Apply voltage of 3.0 V – 5.5 V to Vcc, and 0 V to Vss. •Reference voltage input pin for A-D and D-A conver ters. •Analog power source input pin for A-D and D-A converters. •Connect to VSS. •Reset input pin for active “L.” •Input and output pins for the clock generating circuit. •Connect a ceramic resonator or quartz-crystal oscillator between the XIN and XOUT pins to set the oscillation frequency. •When an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open. •Feedback resistor is built in between XIN pin and XOUT pin. •8-bit CMOS I/O port. •I/O direction register allows each pin to be individually programmed as either input or output. •CMOS compatible input level. •CMOS 3-state output structure. •8-bit I/O port with the same function as port P0. •CMOS compatible input level. •CMOS 3-state output structure. Power source input Table 1 Pin description (1) Function except a port function Reference voltage input Analog power source input Clock input Clock output I/O port P0 I/O port P1 I/O port P2 I/O port P3 VREF AVSS RESET Reset input XIN XOUT P00–P07 P10–P17 P20–P27 P30–P37 •Sub-clock generating circuit I/O pins connect a resonator. (This circuit cannot be operated by an external clock.) •Interrupt input pins P40/XCOUT, P41/XCIN P42/INT1, P43/INT2 P44/RXD, P45/TXD, P46/SCLK1, P47/SRDY1 P50/TOUT P51/INT3– P53/INT5 P54/CNTR0, P55/CNTR1 P56/RTP0, P57/RTP1 •Serial I/O1 function pins •Timer 2 output pin •Interrupt input pins •Timer X, timer Y function pins •Real time port function pins I/O port P4 I/O port P5 •8-bit I/O port with the same function as port P0. •CMOS compatible input level. •CMOS 3-state output structure. |
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