M37272M8HXXXSP General Description
The M37272M6H/M8H/MAH/MFH-XXXSP/FP are single-chip microcomputers designed with 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/FP are similar to those of the M37272M6H-XXXSP/FP except that the chip has a built-in PROM which can be written electrically. The difference between M37272M6H/M8H/MAH/MFH-XXXSP/FP are the ROM size and RAM size. Accordingly, the following descriptions will be for the M37272M6H-XXXSP/FP.
M37272M8HXXXSP Maximum Ratings
M37272M8HXXXSP Features
Number of basic instructions .................................................... 71
Memory size
ROM .............. 24K bytes
(M37272M6H-XXXSP/FP)
32K bytes
(M37272M8H-XXXSP/FP, M37272E8SP/FP)
40K bytes
(M37272MAH-XXXSP/FP)
60K bytes
(M37272MFH-XXXSP/FP, M37272EFSP/FP)
RAM ............... 1024 bytes
(M37272M6H-XXXSP/FP)
1152 bytes
(M37272M8H-XXXSP/FP, M37272E8SP/FP)
1472 bytes
(M37272MAH-XXXSP/FP, M37272MFH- .
XXXSP/FP, M37272EFSP/FP)
(*ROM correction memory included)
Minimum instruction execution time
......................................... 0.5 s (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 P52P55) ..................................................... 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
M37272M8HXXXSP Typical Application
TV with a closed caption decoder
M37272M8HXXXSP Connection Diagram
Map list: ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789All