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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, P3
0
, P3
1
) ............. 26
qInput
ports (Ports P4
0
–P4
6
, P6
3
, P6
4
, P7
0
–P7
2
) ...................... 12
qOutput
ports (Ports P3
2
, P4
7,
P5
,
P6
0
–P6
2,
P6
5
–P6
7
) .............. 16
q12
V withstand ports ................................................................... 8
qLED
drive ports ........................................................................... 2
qSerial
I/O ............................................................ 8-bit
!
1 channel
qMulti-master
I
2
C-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 V
CC
= 5.5V, 8 MHz oscillation frequency, CRT on, and Data
slicer on)
In low-speed mode ......................................................... 0.33 mW
(at V
CC
= 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
(a character) (a dot) (a dot)
(Coloring unit)
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
Vertical :1024 levels
Horizontal: 256 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
MITSUBISHI [ MITSUBISHI ELECTRIC SEMICONDUCTOR ]
