M37280MF Datasheet, PDF (1/178 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

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MITSUBISHI MICROCOMPUTERS
M37280MF–XXXSP, M37280MK–XXXSP
M37280EKSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
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
qNumber of basic instructions .................................................... 71
qMemory size
ROM ..................... 60K bytes (M37280MF-XXXSP)
80K bytes (M37280MK-XXXSP,
M37280EKSP)
RAM ..................... 1024 bytes (M37280MF-XXXSP)
1472 bytes (M37280MK-XXXSP,
M37280EKSP)
ROM correction memory ............................ 64 bytes
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 P32, P47, P5, P60–P62, P65–P67) .............. 16
q12 V withstand ports ................................................................... 8
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, CRT on, and Data
slicer on)
In low-speed mode ......................................................... 0.33 mW
(at VCC = 5.5V, 32 kHz oscillation frequency)
qROM correction function
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) (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
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.
Rev. 1.0