M37273EF8SP

MITSUBISHI MICROCOMPUTERS M37273M8–XXXSP, M37273MF–XXXSP M37273E8SP, M37273EFSP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER 1. DESCRIPTION The M37273M8-XXXSP and M37273MF-XXXSP 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 M37273E8SP and M37273EFSP are similar to those of the M37273M8-XXXSP and M37273MF-XXXSP except that the chip has a built-in PROM which can be written electrically. The difference between M37273M8-XXXSP and M37273MF-XXXSP are the ROM size and RAM size. Accordingly, the following descriptions will be for the M37273M8-XXXSP. 2. FEATURES q Number of basic instructions .................................................... 71 q Memory size ROM .............. 32K bytes (M37273M8-XXXSP, M37273E8SP) 60K bytes (M37273MF-XXXSP, M37273EFSP) RAM ............... 1152 bytes (M37273M8-XXXSP, M37273E8SP) 1472 bytes (M37273MF-XXXSP, M37273EFSP) (*ROM correction memory included) q Minimum instruction execution time ......................................... 0.5 µs (at 8 MHz oscillation frequency) q Power source voltage ................................................. 5 V ± 10 % q Subroutine nesting ............................................. 128 levels (Max.) q Interrupts ....................................................... 17 types...