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
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