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