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componentes Descripción

Fabricante

M37906F8CFP

16-BIT CMOS MICROCOMPUTER

Renesas Electronics 

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MITSUBISHI MICROCOMPUTERS

M37906F8CFP, M37906F8CSP

16-BIT CMOS MICROCOMPUTER

PIN DESCRIPTION (MICROCOMPUTER MODE)

Pin

Name

Input/

Output

Functions

Vcc, Vss Power supply input

— Apply 5 V±0.5 V to Vcc, and 0 V to Vss.

MD0

MD0

Input Connect this pin to VSS.

MD1

MD1

Input Connect this pin to Vss.

RESET

Reset input

Input The microcomputer is reset when “L” level is applied to this pin.

XIN

XOUT

Clock input

Clock output

Input

Output

These are input and output pins of the internal clock generating circuit. Connect a

ceramic or quartz-crystal oscillator between the XIN and XOUT pins. When an

external clock is used, the clock source should be connected to the XIN pin, and the

XOUT pin should be left open.

VCONT

Filter circuit connection

— When using the PLL frequency multiplier, connect this pin to the filter circuit. When

not using the PLL frequency multiplier, this pin should be left open.

AVcc,

AVss

Analog power supply input

— Power supply input pins for the A-D converter and the D-A converter. Connect AVcc

to Vcc, and AVss to Vss externally.

VREF

Reference voltage input

Input This is the reference voltage input pin for the A-D converter and the D-A converter.

P10–P17 I/O port P1

I/O Port P1 is an 8-bit I/O port. This port has an I/O direction register, and each pin

can be programmed for input or output. These pins enter the input mode

at reset. These pins also function as I/O port pins of UART0 and UART1.

P20–P27 I/O port P2

I/O In addition to having the same functions as port P1, these pins also function as I/O

pins for timers A4 and A9. By software setting, these pins also function as input

pins for timers B0–B2, an input pin for INT3, and a trigger input pin in the pulse

output port mode.

P50–P57 I/O port P5

I/O In addition to having the same functions as port P1, these pins also function as

input pins for INT5–INT7, input pins for timers B0–B2, and input pins for position-

data-input pins in the three-phase waveform mode.

P60–P65 I/O port P6

I/O In addition to having the same functions as port P1, these pins also function as I/O

pins for timers A0–A2, and output pins for the motor drive waveform.

P70–P74 I/O port P7

I/O In addition to having the same functions as port P1, these pins also function as

input pins for the A-D converter. P73 functions as an output pin for the D-A

converter; P74 functions as an output pin for the D-A converter, an input pin for

INT3, and a trigger input pin in the pulse output port mode.

P6OUTCUT P6OUTCUT input

Input

This pin has the function to forcibly place port P6 pins in the input mode. Also, this

pin functions as an input pin for INT4; and this pin is used to input a signal, which

forcibly cuts off a motor drive waveform output.

7

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