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M38073M4-214FP Datasheet(PDF) 3 Page - Mitsubishi Electric Semiconductor |
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M38073M4-214FP Datasheet(HTML) 3 Page - Mitsubishi Electric Semiconductor |
3 / 74 page 3 SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER MITSUBISHI MICROCOMPUTERS 3807 Group PIN DESCRIPTION Pin Name Function VCC, VSS Power source • Apply voltage of 2.7–5.5 V to VCC , and 0 V to VSS. CMPVCC Analog comparator • Power source input pin for an analog comparator power source CNVSS CNVSS • This pin controls the operation mode of the chip. • Normally connected to VSS. • If this pin is connected to VCC, the internal ROM is inhibited and external memory is accessed. ADVREF Analog reference • Reference voltage input pin for A-D converter. voltage AVSS Analog power • Analog power source input pin for A-D and D-A converter and an analog comparator source • Connect to VSS. CMPOUT Analog comparator • Output pin for an analog comparator output ______ RESET Reset input • Reset input pin for active “L” XIN Clock input • Input and output signals for the internal clock generating circuit. • Connect a ceramic resonator or quartz-crystal oscillator between the XIN and XOUT pins to set the oscillation frequency. XOUT Clock output • If an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open. • The clock is used as the oscillating source of system clock. P00–P07 I/O port P0 • 8-bit CMOS I/O port P10–P17 I/O port P1 • I/O direction register allows each pin to be individually programmed as either input or output. P20–P27 I/O port P2 • At reset this port is set to input mode. • In modes other than single-chip, these pins are used as address, data bus I/O pins. • CMOS compatible input level • CMOS 3-state output structure • Port P2 can be switched CMOS or TTL input level. P30/RTP6, I/O port P3 • 8-bit CMOS I/O port • Real time port function P31/RTP7 • I/O direction register allows each pin to be individually programmed as either input or output. pins P34/CKOUT, • At reset this port is set to input mode. • Clock output function pin P32, P33, • In modes other than single-chip, these pins are used as control bus I/O pins. P35–P37 • CMOS compatible input level • CMOS 3-state output structure • Port P32 can be switched CMOS or TTL input level. P40/XCOUT, I/O port P4 • 8-bit CMOS I/O port with the same function as port P0 • Sub-clock generating I/O P41/XCIN • CMOS compatible input level pins(connect a resonator) P42/INT0, • CMOS 3-state output structures • Interrupt input pins P43/INT1 • Timer X, Timer Y function pins (INT0, INT1) P44/RXD, • Serial I/O1 function pins P45/TXD, P46/SCLK1, P47/SRDY1 P50/TOUT I/O port P5 • 8-bit CMOS I/O port with the same function as port P0 • Timer 2 output pin P51/SCMP2/ • CMOS compatible input level • Interrupt input pin INT2 • CMOS 3-state output structure • Serial I/O2 function pin P52/INT3, • Interrupt input pin P53/INT4 • Real time port function pin(INT4) P54/CNTR0, • Timer X, Timer Y function pins P55/CNTR1 P56/DA1, • D-A conversion output P57/DA2 pins Function except a port function Table. 1. Pin description (1) |
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