M37270MF Datasheet, PDF (1/94 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
DESCRIPTION
The M37270MF-XXXSP is a single-chip microcomputer designed with
CMOS silicon gate technology. It is housed in a 64-pin shrink plastic
molded DIP.
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.
The M37270MF-XXXSP has 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 features of the M37270EF-XXXSP and the
M37270EFSP are similar to those of the M37270MF-XXXSP except
that these chips have a built-in PROM which can be written electri-
cally.
FEATURES
• ^{Number of basic instructions ..................................................... 71}
• ^{Memory size}
ROM ........................................................ 60 K bytes
RAM ........................................................ 1024 bytes
ROM for OSD ....................................... 14464 bytes
RAM for OSD ......................................... 1920 bytes
• ^{The minimum instruction execution time}
.......................................... 0.5µs (at 8 MHz oscillation frequency)
• ^{Power source voltage .................................................. 5 V ± 10 %}
• ^{Subroutine nesting ............................................. 128 levels (Max.)}
• ^{Interrupts ....................................................... 18 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) ......................................... 9}
• ^{Output ports (Ports P32, P47, P5, P60–P62, P65–P67) ............. 16}
• ^{12 V withstand ports .................................................................. 11}
• ^{LED drive ports ........................................................................... 2}
• ^{Serial I/O ............................................................ 8-bit ! 1 channel}
• ^{Multi-master I2C-BUS interface ............................... 1 (2 systems)}
• ^{A-D converter (8-bit resolution) ................................... 4 channels}
• ^{PWM output circuit ........................................................... 8-bit ! 8}
• ^{Interrupt interval determination circuit ......................................... 1}
• ^{Power dissipation}
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}
• ^{OSD function}
Display characters ............................... 40 characters ! 16 lines
Kinds of characters ..................................................... 320 kinds
(In EXOSD mode, they can be combined with 32 kinds of extra
fonts)
Dot structure ........................................ CC mode : 16 ! 26 dots
OSD mode : 16 ! 20 dots
EXOSD mode : 16 ! 26 dots
Kinds of character sizes ................................ CC mode : 2 types
OSD mode : 14 types
EXOSD mode : 6 types
It can be specified by a character unit (maximum 7 kinds).
Character font coloring, character background coloring
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 : 15 kinds (R, G, B, I)
EXOSD mode : 7 kinds (R, G, B, I1, I2)
Display position
Horizontal ................................................................ 256 levels
Vertical .................................................................. 1024 levels
Attribute ...................... CC mode : smooth italic, underline, flash
OSD mode : border
EXOSD mode : border,
extra font (32 kinds)
Automatic solid space function
Window function
Dual layer OSD function
APPLICATION
TV with a closed caption decoder