M37281MAH–XXXSP,M37281MFH–XXXSP,M37281MKH–XXXSP,
REJ03B0049-0101Z
M37281EKSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Rev.1.01
2003.07.16
with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
1. DESCRIPTION
ꢀROM correction function ................................................ 2 vectors
ꢀClosed caption data slicer
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.
ꢀOSD function
Display characters .... 32 characters ꢀ 16 lines + RAM font (1 character)
(CC/OSD mode)(CDOSD mode)(RAM font)
Kinds of characters ......... 510 kinds
(Coloring unit) (a character)
+ 62 kinds + 1 kind
(a dot) (a dot)
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.
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
2. FEATURES
ꢀNumber of basic instructions .................................................... 71
ꢀMemory size
ROM .................. 40K bytes (M37281MAH-XXXSP)
60K bytes (M37281MFH-XXXSP)
Display position
Horizontal: 256 levels
Vertical :1024 levels
80K bytes (M37281MKH-XXXSP,
(RAM font can be set independently)
M37281EKSP)
Attribute ........................................................................................
CC mode: smooth italic, underline, flash, automatic solid space
OSD mode: border, shadow
RAM ...................1088 bytes (M37281MAH-XXXSP,
M37281MFH-XXXSP)
1536 bytes (M37281MKH-XXXSP,
Window/Blank function
M37281EKSP)
(*ROM correction memory included)
3. APPLICATION
TV with a closed caption decoder
ꢀMinimum instruction execution time
......................................... 0.5 µs (at 8 MHz oscillation frequency)
ꢀ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, P30, P31) ............. 26
ꢀInput ports (Ports P40–P46, P63, P64, P70–P72) ...................... 12
ꢀOutput ports (Ports P52–P55) ..................................................... 4
ꢀLED drive ports ........................................................................... 2
ꢀSerial I/O ............................................................ 8-bit ꢀ 1 channel
2
ꢀMulti-master I C-BUS interface .............................. 1 (2 systems)
ꢀA-D converter (8-bit resolution).................................... 8 channels
ꢀPWM output circuit......................................................... 8-bit ꢀ 8
ꢀPower 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)
Rev.1.01 2003.07.16 page 1 of 171