M38072MA-XXXFS 查看數據表（PDF） - MITSUBISHI ELECTRIC

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M38072MA-XXXFS

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

MITSUBISHI MICROCOMPUTERS

3807 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

PIN DESCRIPTION

Table. 1. Pin description (1)

Pin

Name

Function

Function except a port 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

______

RESET

output

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

3

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