M37281EKSP datasheet(1/172 Pages) RENESAS

Part #	M37281EKSP

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

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Manufacturer	RENESAS [Renesas Technology Corp]

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1. DESCRIPTION

The M37281MAH–XXXSP, M37281MFH–XXXSP and M37281MKH-

XXXSP are single-chip microcomputers designed with CMOS silicon

gate technology. They have 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 feautures of the M37281EKSP is similar to those of the

M37281MKH-XXXSP except that the chip has a built-in PROM which

can be written electrically. The difference between M37281MAH–

XXXSP, M37281MKH-XXXSP and M37281MFH-XXXSP are the ROM

size and RAM size. Accordingly, the following descriptions will be for

the M37281MKH-XXXSP.

2. FEATURES

qNumber of basic instructions .................................................... 71

qMemory size

ROM .................. 40K bytes (M37281MAH-XXXSP)

60K bytes (M37281MFH-XXXSP)

80K bytes (M37281MKH-XXXSP,

M37281EKSP)

RAM ................... 1088 bytes (M37281MAH-XXXSP,

M37281MFH-XXXSP)

1536 bytes (M37281MKH-XXXSP,

M37281EKSP)

(*ROM correction memory included)

qMinimum instruction execution time

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

µs (at 8 MHz oscillation frequency)

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

qSubroutine nesting ............................................. 128 levels (Max.)

qInterrupts ....................................................... 19 types, 16 vectors

q8-bit timers .................................................................................. 6

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

qInput ports (Ports P40–P46, P63, P64, P70–P72) ...................... 12

qOutput ports (Ports P52–P55) ..................................................... 4

qLED drive ports ........................................................................... 2

qSerial I/O ............................................................ 8-bit ✕ 1 channel

qMulti-master I2C-BUS interface .............................. 1 (2 systems)

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

qPWM output circuit ......................................................... 8-bit ✕ 8

qPower dissipation

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

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

slicer on)

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

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

qROM correction function ................................................ 2 vectors

qClosed caption data slicer

qOSD function

Display characters .... 32 characters ✕ 16 lines + RAM font (1 character)

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

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

+ 62 kinds

+ 1 kind

(Coloring unit)

(a character)

(a dot)

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

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

Character display area .............. CC/CDOSD mode: 16 ✕ 26 dots

OSD mode/RAM font: 16 ✕ 20 dots

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

OSD/CDOSD mode: 14 kinds

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

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

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

Blanking output OUT1, OUT2

Display position

Horizontal: 256 levels

Vertical :1024 levels

(RAM font can be set independently)

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

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

OSD mode: border, shadow

Window/Blank function

3. APPLICATION

TV with a closed caption decoder

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

M37281MAH–XXXSP,M37281MFH–XXXSP,M37281MKH–XXXSP,

M37281EKSP

REJ03B0049-0101Z

Rev.1.01

2003.07.16

Rev.1.01

2003.07.16

page 1 of 171

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