MITSUBISHI MICROCOMPUTERS
M37274EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
OSD function
DESCRIPTION
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The M3727EFSP is a single-chip microcomputer designed with CMOS
silicon gate technology. It is housed in a 52-pin shrink plastic molded
DIP.
Display characters ............................... 40 characters ✕ 16 lines
Kinds of characters ..................................................... 256 kinds
(In EXOSD mode, they can be combined with 16 kinds of extra
fonts)
In addition to their simple instruction sets, the ROM, RAM and I/O
addresses are placed on the same memory map to enable easy pro-
gramming.
Character display area ........................ CC mode : 16 ✕ 26 dots
OSD mode : 16 ✕ 20 dots
The M3727EFSP has a OSD function and a data slicer function, so it
is useful for a channel selection system for TV with a closed caption
decoder.
EXOSD mode : 16 ✕ 26 dots
Kinds of character sizes ............................... CC mode : 2 types
OSD mode : 14 types
EXOSD mode : 6 types
FEATURES
Kinds of character background colors
CC mode : 7 kinds (a character unit)
OSD mode : 7 kinds (a character unit)
EXOSD mode : 5 kinds (a character unit)
It can be specified by a screen unit (maximum 7 kinds).
Extra font coloring, raster coloring, border coloring
Kinds of character colors ............... CC mode : 7 kinds (R, G, B)
OSD mode : 7 kinds (R, G, B)
Number of basic instructions..................................................... 71
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Memory size
ROM ....................................................... 60 K bytes
RAM ........................................................1024 bytes
ROM correction memory.............................64 bytes
ROM for OSD .......................................11072 bytes
RAM for OSD ..........................................1920 bytes
Minimum instruction execution time
EXOSD mode : 5 kinds (R, G, B)
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......................................... 0.5 µs (at 8 MHz oscillation frequency)
Display position
Power source voltage...................................................5 V ± 10 %
Horizontal ................................................................ 256 levels
Vertical .................................................................. 1024 levels
Attribute ......................CC mode : smooth italic, underline, flash
OSD mode : border
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Subroutine nesting ............................................. 128 levels (Max.)
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Interrupts ....................................................... 18 types, 16 vectors
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8-bit timers .................................................................................. 6
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Programmable I/O ports (Ports P0, P1, P2, P30, P31) .............. 26
EXOSD mode : border,
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Input ports (Ports P40–P46, P63, P64, P70–P72) ...................... 12
extra font (16 kinds)
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Output ports (Ports P52–P55)...................................................... 4
Automatic solid space function
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12 V withstand ports.................................................................... 7
Window function
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LED drive ports ........................................................................... 2
Dual layer OSD function
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Serial I/O ............................................................ 8-bit ✕ 1 channel
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2
Multi-master I C-BUS interface ................................1 (2 systems)
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APPLICATION
TV with a closed caption decoder
A-D converter (8-bit resolution) .................................... 6 channels
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PWM output circuit ......................................... 14-bit ✕ 1, 8-bit ✕ 7
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Power dissipation
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In high-speed mode .......................................................... 165mW
(at VCC = 5.5V, 8MHz oscillation frequency, CRT on, and Data
slicer on)
In low-speed mode ........................................................... 0.33mW
(at VCC = 5.5V, 32kHz oscillation frequency)
Data slicer
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ROM correction function
RENESAS [ RENESAS TECHNOLOGY CORP ]
