m37280eksp Mitsumi Electronics, Corp., m37280eksp Datasheet

m37280eksp

Manufacturer Part Number

m37280eksp

Description

Single-chip 8-bit Cmos Microcomputer With Closed Caption Decoder And On-screen Display Controller

Manufacturer

Mitsumi Electronics, Corp.

Datasheet

1.M37280EKSP.pdf (178 pages)

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1. DESCRIPTION

The M37280MF–XXXSP and M37280MK-XXXSP are single-chip

microcomputers designed with CMOS silicon gate technology. They

have a OSD function and a data slicer function, so it is useful for a

channel selection system for TV with a closed caption decoder.

The feautures of the M37280EKSP is similar to those of the

M37280MK-XXXSP except that the chip has a built-in PROM which

can be written electrically. The difference between M37280MK-XXXSP

and M37280MF-XXXSP are the ROM size and RAM size. Accord-

ingly, the following descriptions will be for the M37280MK-XXXSP.

2. FEATURES

Rev. 1.0

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

Memory size

Minimum instruction execution time

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

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

Interrupts ....................................................... 19 types, 16 vectors

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

Programmable I/O ports (Ports P0, P1, P2, P3

Input ports (Ports P4

Output ports (Ports P3

12 V withstand ports ................................................................... 8

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

Serial I/O ............................................................ 8-bit

Multi-master I

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

PWM output circuit ......................................................... 8-bit

Power dissipation

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

(at V

slicer on)

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

(at V

ROM correction function

......................................... 0.5 s (at 8 MHz oscillation frequency)

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

= 5.5V, 32 kHz oscillation frequency)

ROM ..................... 60K bytes (M37280MF-XXXSP)

RAM ..................... 1024 bytes (M37280MF-XXXSP)

ROM correction memory ............................ 64 bytes

C-BUS interface .............................. 1 (2 systems)

–P4

, P4

, P6

1472 bytes (M37280MK-XXXSP,

80K bytes (M37280MK-XXXSP,

, P7

–P6

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

–P7

) ...................... 12

–P6

, P3

M37280EKSP)

M37280MF–XXXSP, M37280MK–XXXSP

) .............. 16

) ............. 26

1 channel

3. APPLICATION

TV with a closed caption decoder

4. PIN CONFIGURATION

Refer to page 3.

5. BLOCK DIAGRAM

Refer to page 4.

6. PERFORMANCE OVERVIEW

Refer to pages 5 and 6.

7. PIN DESCRIPTION

Refer to pages 7 to 11.

Closed caption data slicer

OSD function

Display characters .... 32 characters

Kinds of characters ......... 510 kinds

(Coloring unit)

Triple layer function .......................................................................

Character display area .............. CC/CDOSD mode: 16

Kinds of character sizes .................... CC mode/RAM font: 4 kinds

Kinds of character colors ..............................................................

Coloring unit ............ dot, character, character background, raster

Blanking output OUT1, OUT2

Display position

Attribute ........................................................................................

Window/Blank function

Horizontal: 256 levels

(RAM font can be set independently)

CC mode: smooth italic, underline, flash, automatic solid space

OSD mode: border, shadow

64 colors (4 adjustment levels for each R, G, B)

2 layers selected from CC/CDOSD/OSD mode + RAM font layer

and ON-SCREEN DISPLAY CONTROLLER

MITSUBISHI MICROCOMPUTERS

(CC/OSD mode)(CDOSD mode)(RAM font)

OSD mode/RAM font: 16

Vertical :1024 levels

(a character) (a dot)

M37280EKSP

16 lines + RAM font (1 character)

OSD/CDOSD mode: 14 kinds

+ 62 kinds

+ 1 kind

(a dot)

26 dots

20 dots

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