M37271MF datasheet(1/97 Pages) MITSUBISHI

Part #	M37271MF

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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DESCRIPTION

The M37271MF-XXXSP is a single-chip microcomputer designed with

CMOS silicon gate technology. It is housed in a 52-pin shrink plastic

molded DIP.

In addition to their simple instruction sets, the ROM, RAM and I/O

addresses are placed on the same memory map to enable easy pro-

gramming.

The M37271MF-XXXSP has a OSD function and a data slicer func-

tion, so it is useful for a channel selection system for TV with a closed

caption decoder. The features of the M37271EF-XXXSP and the

M37271EFSP are similar to those of the M37271MF-XXXSP except

that these chips have a built-in PROM which can be written electri-

cally.

FEATURES

• Number of basic instructions ..................................................... 71

• Memory size

ROM ........................................................ 60 K bytes

RAM ........................................................ 1024 bytes

ROM for OSD ....................................... 14464 bytes

RAM for OSD ......................................... 1920 bytes

• The minimum instruction execution time

.......................................... 0.5

µs (at 8 MHz oscillation frequency)

• Power source voltage .................................................. 5 V ± 10 %

• Subroutine nesting ............................................. 128 levels (Max.)

• Interrupts ....................................................... 18 types, 16 vectors

• 8-bit timers .................................................................................. 6

• Programmable I/O ports (Ports P0, P1, P2, P30, P31) .............. 26

• Input ports (Ports P40–P46, P63, P64) ......................................... 9

• Output ports (Ports P52–P55) ...................................................... 4

• 12 V withstand ports ..................................................................11

• LED drive ports ........................................................................... 2

• Serial I/O ............................................................ 8-bit ! 1 channel

• Multi-master I2C-BUS interface ............................... 1 (2 systems)

• A-D converter (8-bit resolution) ................................... 4 channels

• PWM output circuit ........................................................... 8-bit ! 7

• Interrupt interval determination circuit ......................................... 1

• Power dissipation

In high-speed mode .......................................................... 165mW

(at VCC = 5.5V, 8MHz oscillation frequency, CRT on, and Data

slicer on)

In low-speed mode .......................................................... 0.33mW

(at VCC = 5.5V, 32kHz oscillation frequency)

• Data slicer

• OSD function

Display characters ............................... 40 characters ! 16 lines

Kinds of characters ..................................................... 320 kinds

(In EXOSD mode, they can be combined with 32 kinds of extra

fonts)

Dot structure ........................................ CC mode : 16 ! 26 dots

OSD mode : 16 ! 20 dots

EXOSD mode : 16 ! 26 dots

Kinds of character sizes ................................ CC mode : 2 types

OSD mode : 14 types

EXOSD mode : 6 types

It can be specified by a character unit (maximum 7 kinds).

Character font coloring, character background coloring

It can be specified by a screen unit (maximum 7 kinds).

Extra font coloring, raster coloring, border coloring

Kinds of character colors ............... CC mode : 7 kinds (R, G, B)

OSD mode : 15 kinds (R, G, B, I)

EXOSD mode : 7 kinds (R, G, B, I1, I2)

Display position

Horizontal ................................................................ 256 levels

Vertical .................................................................. 1024 levels

Attribute ...................... CC mode : smooth italic, underline, flash

OSD mode : border

EXOSD mode : border,

extra font (32 kinds)

Automatic solid space function

Window function

Dual layer OSD function

APPLICATION

TV with a closed caption decoder

MITSUBISHI MICROCOMPUTERS

M37271MF-XXXSP

M37271EF-XXXSP, M37271EFSP

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

and ON-SCREEN DISPLAY CONTROLLER

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M37271MF Datasheet(PDF) 1 Page - Mitsubishi Electric Semiconductor

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