M37905F8CFP Datasheet, PDF (7/34 Pages) Mitsubishi Electric Semiconductor – 16-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
M37905F8CFP, M37905F8CSP
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 applies 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 resonator or quartz-crystal oscillator between pins XIN and XOUT. When an
external clock is used, the clock source should be connected to pin XIN, and pin
XOUT 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 and D-A converters. 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 and D-A converters.
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 ar reset. These
pins also function as I/O pins of UART0, 1.
P20–P27 I/O port P2
I/O In addition to having the same functions as port P1, these pins function as I/O pins
for timers A4 and A9. Also, they can be programmed to function as input pins for tim-
ers B0 to B2.
P40–P47 I/O port P4
I/O In addition to having the same functions as port P1, these pins function as I/O pins
for timers A5 to A8. Also, they function as output pins for motor drive waveform.
P51–P53, I/O port P5
P55–P57
I/O In addition to having the same functions as port P1, these pins function as input pins
for INT1 to INT3 and INT5 to INT7. Also, pins P55 to P57 function as input pins for tim-
ers B0 to B2 and as input pins for position data in the three-phase waveform mode;
and pins P52 and P53 function as trigger-input pins in the pulse output port mode.
P60–P67 I/O port P6
I/O In addition to having the same functions as port P1, these pins function as I/O pins
for timers A0 to A3. Also, they function as motor drive waveform output pins.
P70–P77 I/O port P7
I/O In addition to having the same functions as port P1, these pins function as input pins
for the A-D converter. Also, P77 functions as an output pin for the D-A converter.
P80–P83 I/O port P8
I/O In addition to having the same functions as port P1, these pins function as input pins
for the A-D converter. Also, these pins function as I/O pins for UART2, and pin P80
functions as an output pin for the D-A converter.
P4OUTCUT P4OUTCUT input
Input
This pin has the function to forcibly place port P4 pins in the input mode. Also, this
pin functions as an input pin for INT0; and this pin is used to input a signal, which
forcibly cuts off a motor drive waveform output.
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.
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