DESCRIPTION

The M37272M6/M8-XXXSP/FP and M37272MA-XXXSP are single chip microcomputers designed ith CMOS silicon gate technology. They have a OSD, data slicer, and I2C-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.

FEATURES

● Number of basic instructions .................................................... 71

● Memory size

ROM .............. 24K bytes

(M37272M6-XXXSP/FP)

32K bytes

(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

● Multi-master I2C-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

● OSD function

Display characters ................................... 32 characters ? 2 lines

(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

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 ........................................................................................

CC mode: smooth italic, underline, flash, automatic solid space

OSD mode: border

Smoth roll-up

Window function

APPLICATION

TV with a closed caption decoder