M37271EFSP datasheet(6/97 Pages) MITSUBISHI

Part #	M37271EFSP

Description	SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER???

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Manufacturer	MITSUBISHI [Mitsubishi Electric Semiconductor]

Direct Link	http://www.mitsubishichips.com

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MITSUBISHI MICROCOMPUTERS

M37271MF-XXXSP

M37271EF-XXXSP, M37271EFSP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER

and ON-SCREEN DISPLAY CONTROLLER

6

Apply voltage of 5 V ± 10 % (typical) to VCC and AVCC, and 0 V to VSS.

This is connected to VSS.

To enter the reset state, the reset input pin must be kept at a “L” for 2

µs or more (under

normal VCC conditions).

If more time is needed for the quartz-crystal oscillator to stabilize, this “L” condition should

be maintained for the required time.

This chip has an internal clock generating circuit. To control generating frequency, an

external ceramic resonator or a quartz-crystal oscillator is connected between pins XIN and

XOUT. If an external clock is used, the clock source should be connected to the XIN pin and

the XOUT pin should be left open.

Port P0 is an 8-bit I/O port with direction register allowing each I/O bit to be individually

programmed as input or output. At reset, this port is set to input mode. The output structure

of P03 is CMOS output, that of P00–P02 and P04–P07 are N-channel open-drain output.

The note out of this Table gives a full of port P0 function.

Pins P00–P02 and P04–P07 are also used as PWM output pins PWM4–PWM6 and PWM0–

PWM3 respectively. The output structure is N-channel open-drain output.

Port P1 is an 8-bit I/O port and has basically the same functions as port P0. The output

structure of P10 and P15–P17 is CMOS output, that of P11–P14 is N-channel open-drain

output.

Pins P10, P15, P16 are also used as OSD output pins OUT2, I1, I2 respectively. The output

structure is CMOS output.

Pins P11–P14 are used as SCL1, SCL2, SDA1 and SDA2 respectively, when multi-master

I2C-BUS interface is used. The output structure is N-channel open-drain output.

P17 pin is also used as serial I/O data input pin SIN.

Port P2 is an 8-bit I/O port and has basically the same functions as port P0. The output

structure is CMOS output.

Pins P24–P26 are also used as analog input pins AD3–AD1 respectively.

Ports P30 and P31 are a 2-bit I/O port and has basically the same functions as port P0. The

output structure is CMOS output.

Ports P40–P46 are a 7-bit input port.

P40 pin is also used as analog input pin AD4.

Pins P41, P44 are also used as external interrupt input INT2, INT1.

Pins P42 and P43 are also used as external clock input pins TIM2, TIM3 respectively.

P45 pin is used as serial I/O data output pin SOUT. The output structure is N-channel open-

drain output.

P46 pin is used as serial I/O synchronizing clock input/output pin SCLK. The output struc-

ture is N-channel open-drain output.

Ports P52–P55 are a 4-bit output port. The output structure is CMOS output.

Pins P52–P55 are also used as OSD output pins R, G, B, OUT1 respectively.

PIN DESCRIPTION

Name

Input/

Output

Power source

CNVSS

Reset input

Clock input

Clock output

I/O port P0

PWM output

I/O port P1

OSD output

Multi-master

I2C-BUS interface

Serial I/O data

input

I/O port P2

Analog input

I/O port P3

Input port P4

Analog input

External interrupt

input

External clock input

Serial I/O data

output

Serial I/O

synchronizing clock

input/output

Output port P5

OSD output

VCC,

AVCC,

VSS.

CNVSS

_____

RESET

XIN

XOUT

P00/PWM4–

P02/PWM6,

P03,

P04/PWM0–

P07/PWM3

P10/OUT2,

P11/SCL1,

P12/SCL2,

P13/SDA1,

P14/SDA2,

P15/I1,

P16/I2/INT3,

P17/SIN

P20–P23

P24/AD3–

P26/AD1,

P27

P30, P31

P40/AD4,

P41/INT2,

P42/TIM2,

P43/TIM3,

P44/INT1,

P45/SOUT,

P46/SCLK,

P52/R,P53/G,

P54/B,

P55/OUT1

Input

Output

I/O

Output

I/O

Output

Input

I/O

Input

I/O

Input

Output

I/O

Output

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M37271EFSP Datasheet(PDF) 6 Page - Mitsubishi Electric Semiconductor

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