DESCRIPTION

The M37221M4H/M6H/M8H/MAH-XXXSP/FP are single-chip microcomputers designed with CMOS silicon gate technology. They have a OSD, I2C-BUS interface, and PWM, making them perfect for TV channel selection system.
The M37221EASP/FP have a built-in PROM that can be written electrically.

FEATURES

●Number of basic instructions ..................................................... 71
●Memory size
ROM ............. 16K bytes (M37221M4H-XXXSP/FP)
24K bytes (M37221M6H-XXXSP/FP)
32K bytes (M37221M8H-XXXSP/FP)
40K bytes(M37221MAH-XXXSP/FP, M37221EASP/FP)
RAM ............. 384 bytes (M37221M4H-XXXSP/FP)
448 bytes (M37221M6H-XXXSP/FP)
576 bytes (M37221M8H-XXXSP/FP)
704 bytes(M37221MAH-XXXSP/FP, M37221EASP/FP)
(ROM correction memory included)
●The minimum instruction execution time ......................................... 0.5 µs (at 8 MHz oscillation frequency)
●Power source voltage .................................................. 5 V ± 10 %
●Subroutine nesting
maximum 96 levels (M37221M4H/M6H-XXXSP/FP)
maximum 128 levels (M37221M8H/MAH-XXXSP/FP, M37221EASP/FP)
●Interrupts ........................................................ 14 types, 14 vectors
●8-bit timers ................................................................................... 4
●Programmable I/O ports (Ports P0, P1, P2, P30–P32) ..................................................... 27
●Input ports (Ports P33, P34) ......................................................... 2
●Output ports (Ports P52–P55) ...................................................... 4
●LED drive ports ............................................................................ 4
●Serial I/O ............................................................. 8-bit ✕ 1 channel
●Multi-master I2C-BUS interface ............................... 1 (2 systems)
●A-D comparator (6-bit resolution) ................................. 6 channels
●D-A converter (6-bit resolution) .................................................... 2
Note: Only M37221EASP/FP has D-A converter.
●PWM output circuit ..........................................14-bit ✕ 1, 8-bit ✕ 6
●Power dissipation .............................. High-speed mode : 165 mW (at VCC=5.5V, 8 MHz oscillation frequency, and OSD on)
●ROM correction function ................................................. 2 vectors
●OSD function
Display characters .................................... 24 characters 5 2 lines
(3 lines or more can be displayed by software)
Kinds of characters ........................................................ 256 kinds
Character display area ..............................................12 ✕16 dots
Kinds of character sizes ..................................................... 3 kinds
Kinds of character colors .................................. 8 colors (R, G, B)
Coloring unit ................... character, character background, raster
Display position .............................................................................Horizontal: 64 levels Vertical: 128 levels
Attribute .............................................................................. border

APPLICATION

TV