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Mitsubishi - SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

Numéro de référence M37225M8
Description SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
Fabricant Mitsubishi 
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M37225M8 fiche technique
MITSUBISHI MICROCOMPUTERS
M37225M6-XXXSP, M37225M8-XXXSP
M37225ECSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
1. DESCRIPTION
The M37225M6-XXXSP, M37225M8-XXXSP, and M37225ECSP are
single-chip microcomputers designed with CMOS silicon gate tech-
nology. They have a OSD, I2C-BUS interface, PWM output, and 12 V
withstand, so it is useful for a channel selection system for TV.
The features of the M37225ECSP are similar to those of the
M37225M6-XXXSP except that the chip has a built-in PROM which
can be written electrically. The difference between M37225M6-XXXSP
and M37225M8-XXXSP are the ROM size. Accordingly, the follow-
ing descriptions will be for the M37225M6-XXXSP.
2. FEATURES
qNumber of basic instructions .................................................... 71
qMemory size
ROM ..................... 24K bytes (M37225M6-XXXSP)
32K bytes (M37225M8-XXXSP)
48K bytes (M37225ECSP)
RAM ...................... 1024 bytes (M37225M6-XXXSP,
M37225M8-XXXSP)
2048 bytes (M37225ECSP)
(*ROM correction memory included)
qMinimum instruction execution time
......................................... 0.5 µs (at 8 MHz oscillation frequency)
qPower source voltage ................................................. 5 V ± 10 %
qSubroutine nesting ............................................. 128 levels (Max.)
qInterrupts ....................................................... 16 types, 16 vectors
q8-bit timers .................................................................................. 4
qProgrammable I/O ports (Ports P0, P1, P2, P30–P32, P35) ..... 28
qInput ports (Ports P33, P34, P50, P51) ........................................ 4
qOutput ports (Ports P52–P55) ..................................................... 4
q12 V withstand ports ................................................................... 6
qLED drive ports ........................................................................... 4
qSerial I/O ............................................................ 8-bit ! 1 channel
qMulti-master I2C-BUS interface .............................. 1 (2 systems)
qA-D converter (8-bit resolution) .................................... 8 channels
qPWM output circuit ........................................ 14-bit ! 2, 8-bit ! 6
qPower dissipation
In operating ...................................................................... 165 mW
(at VCC = 5.5V, 8 MHz oscillation frequency, and OSD on)
qROM correction function ................................................ 3 vectors
qImmediate return mode from wait state
qOSD function
Display characters ............................................... 24 characters ! 2 lines
(It is possible to display 3 lines or more by software)
Kinds of characters ......... 381 kinds
Character display area 16 ! 20 dots
Kinds of character sizes .............................. Block display: 3 kinds
SPRITE display: 1 kinds
Kinds of character colors. ................................. 8 colors (R, G, B)
Coloring unit ................... character, character background, raster
Display position
Horizontal: 64 levels Vertical :255 levels
Attribute ........ Border (all-bordered, shadow-bordered), BUTTON
SPRITE display function
Wallpaper function
Window function
Corresponding to bi-scan mode
3. APPLICATION
TV
Rev. 1.1

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