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M38199E3-XXXFS Datasheet(PDF) 3 Page - Mitsubishi Electric Semiconductor |
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M38199E3-XXXFS Datasheet(HTML) 3 Page - Mitsubishi Electric Semiconductor |
3 / 60 page 3 3819 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER MITSUBISHI MICROCOMPUTERS •Reset input pin for active “L” VCC, VSS PIN DESCRIPTION Pin Name Function Function except a port function Power source •Apply voltage of 4.0 to 5.5 V to VCC, and 0 V to VSS. •Applies voltage supplied to pull-down resistors of ports P0, P1, P20–P23, P3, and P9. •Reference voltage input pin for A-D converter and D-A converter •GND input pin for A-D converter and D-A converter •Connect AVSS to VSS. •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 pin and XOUT pin to set 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. •8-bit output port •This port builds in pull-down resistor between port P0 and the VEE pin. •At reset this port is set to VEE level. •The high-breakdown-voltage P-channel open-drain VEE VREF AVSS RESET XIN XOUT P00/SEG32/ DIG0–P07/ SEG39/DIG7 P10/SEG40/ DIG8–P17/ DIG15 P20/DIG16– P23/DIG19 P24–P27 •8-bit output port with the same function as port P0 •4-bit output port with the same function as port P0 •4-bit I/O port •I/O direction register allows each pin to be individually programmed as either input or output. •At reset this port is set to input mode. •TTL input level •CMOS 3-state output P30/SEG24– P37/SEG31 P40/INT0, P45/INT1/ ZCR P42/INT2– P44/INT4 P41 P46/T1OUT, P47/T3OUT Pull-down Power source Analog reference voltage Reset input Analog power source Clock input Clock output Output port P0 Output port P1 Output port P2 I/O port P2 Output port P3 Input port P4 I/O port P4 •8-bit output port with the same function as port P0 •2-bit input port •CMOS compatible input level •6-bit CMOS I/O port with the same function as ports P24–P27 •CMOS compatible input level •CMOS 3-state output FLD automatic display pins FLD automatic display pins FLD automatic display pins FLD automatic display pins External interrupt input pins A zero cross detection circuit input pin (P45) Timer output pins |
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