M37540E8T-XXXFP

7540 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER REJ03B0011-0400 Rev.4.00 Jun 21, 2004 DESCRIPTION The 7540 Group is the 8-bit microcomputer based on the 740 family core technology. The 7540 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 ......................... 0.34 µs (at 6 MHz oscillation frequency, double-speed mode for the shortest instruction) Memory size ROM ............................................ 8 K to 32 K bytes RAM ............................................. 384 to 768 bytes Programmable I/O ports ....................... 29 (25 in 32-pin version) Interrupts ................................................. 15 sources, 15 vectors ................................. (14 sources, 14 vectors for 32-pin version) Timers ............................................................................. 8-bit ✕ 4 ...................................................................................... 16-bit ✕ 1 Serial I/O1 ................... 8-bit ✕ 1 (UART or Clock-synchronized) Serial I/O2 (Note 1) ..................... 8-bit ✕ 1 (Clock-synchronized) A/D converter ............................................... 10-bit ✕ 8 channels .................................................... (6 channels for 32-pin version) ...