M37225ECSP

MITSUBISHI MICROCOMPUTERS M37225M6-XXXSP, M37225M8-XXXSP M37225ECSP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER 1. DESCRIPTION The M37225M6-XXXSP, M37225M8-XXXSP, and M37225ECSP are single-chip microcomputers designed with CMOS silicon gate technology. They have a OSD, I2C-BUS interface, PWM output, and 12 V withstand, so it is useful for a channel selection system for TV. The features of the M37225ECSP are similar to those of the M37225M6-XXXSP except that the chip has a built-in PROM which can be written electrically. The difference between M37225M6-XXXSP and M37225M8-XXXSP are the ROM size. Accordingly, the following descriptions will be for the M37225M6-XXXSP. 2. FEATURES q Number of basic instructions .................................................... 71 q Memory size ROM ..................... 24K bytes (M37225M6-XXXSP) 32K bytes (M37225M8-XXXSP) 48K bytes (M37225ECSP) RAM ...................... 1024 bytes (M37225M6-XXXSP, M37225M8-XXXSP) 2048 bytes (M37225ECSP) (*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 ....................................................... 16 types, 16 vectors q 8-bit timers ......................................