MITSUBISHI MICROCOMPUTERS
M37272M6/M8–XXXSP/FP, M37272MA–XXXSP
M37272E8SP/FP, M37272EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
1. DESCRIPTION
●OSD function
Display characters ................................... 32 characters ✕ 2 lines
The M37272M6/M8-XXXSP/FP and M37272MA-XXXSP are single-
(It is possible to display 3 lines or more by software)
Kinds of characters ........................................................ 254 kinds
Character display area............................ CC mode: 16 ✕ 26 dots
OSD mode: 16 ✕ 20 dots
chip microcomputers designed with CMOS silicon gate technology.
2
They have a OSD, data slicer, and I C-BUS interface, so it is useful
for a channel selection system for TV with a closed caption decoder.
The features of the M37272E8SP/FP and M37272EFSP are similar
to those of the M37272M6-XXXSP except that the chip has a built-in
PROM which can be written electrically. The difference between
M37272M6-XXXSP/FP, M37272M8-XXXSP/FP and M37272MA-
XXXSP are the ROM size and RAM size. Accordingly, the following
descriptions will be for the M37272M6-XXXSP/FP.
Kinds of character sizes..................................... CC mode: 1 kind
OSD mode: 8 kinds
Kinds of character colors .................................. 8 colors (R, G, B)
Coloring unit ................... character, character background, raster
Display position
Horizontal: 128 levels
Vertical: 512 levels
Attribute ........................................................................................
2. FEATURES
CC mode: smooth italic, underline, flash, automatic solid space
●Number of basic instructions .................................................... 71
OSD mode: border
Smoth roll-up
●Memory size
ROM .............. 24K bytes
Window function
(M37272M6-XXXSP/FP)
32K bytes
3. APPLICATION
TV with a closed caption decoder
(M37272M8-XXXSP/FP, M37272E8SP/FP)
40K bytes
(M37272MA-XXXSP)
60K bytes
(M37272EFSP)
RAM ............... 1024 bytes
(
M37272M6-XXXSP/FP
1152 bytes
M37272M8-XXXSP/FP, M37272E8SP/FP
1472 bytes
M37272MA-XXXSP, M37272EFSP
)
(
)
(
)
(*ROM correction memory included)
●Minimum instruction execution time
......................................... 0.5 µs (at 8 MHz oscillation frequency)
●Power source voltage ................................................. 5 V ± 10 %
●Subroutine nesting ............................................. 128 levels (Max.)
●Interrupts ....................................................... 17 types, 16 vectors
●8-bit timers .................................................................................. 6
●Programmable I/O ports (Ports P0, P1, P2, P30, P31) ............. 26
●Input ports (Ports P50, P51) ........................................................ 2
●Output ports (Ports P52–P55) ..................................................... 4
●12 V withstand ports ................................................................... 6
●LED drive ports ........................................................................... 4
●Serial I/O ............................................................ 8-bit ✕ 1 channel
2
●Multi-master I C-BUS interface .............................. 1 (2 systems)
●A-D comparator (6-bit resolution) ................................ 6 channels
●PWM output circuit......................................................... 8-bit ✕ 6
●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)
●ROM correction function ................................................ 2 vectors
●Closed caption data slicer
Rev. 1.4
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