M37544G

7544 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER REJ03B0012-0104Z Rev.1.04 2004.06.08 DESCRIPTION The 7544 Group is the 8-bit microcomputer based on the 740 family core technology. The 7544 Group has a serial I/O, 8-bit timers, a 16-bit timer, and an A/D converter, and is useful for control of home electric appliances and office automation equipment. FEATURES Basic machine-language instructions ...................................... 71 The minimum instruction execution time ......................... 0.25 µs (at 8 MHz oscillation frequency, double-speed mode for the shortest instruction) Memory size ROM ......................................................... 8 K bytes RAM ........................................................ 256 bytes Programmable I/O ports ........................................................... 25 Interrupts ................................................. 12 sources, 12 vectors Timers ............................................................................. 8-bit ✕ 2 ...................................................................................... 16-bit ✕ 1 Serial I/O ...................... 8-bit ✕ 1 (UART or Clock-synchronized) A/D converter ................................................. 8-bit ✕ 6 channels Clock generating circuit ............................................. Built-in type (low-power dissipation by an on-chip oscillator enabled) (connect to external ceramic resonator or quartz-cryst...