3804

3803/3804 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER REJ03B0073-0401Z Rev.4.01 Nov 14, 2003 DESCRIPTION The 3803/3804 group is the 8-bit microcomputer based on the 740 family core technology. The 3803/3804 group is designed for household products, office automation equipment, and controlling systems that require analog signal processing, including the A-D converter and D-A converters. The 3804 group is the version of the 3803 group to which an I2CBUS control function has been added. FEATURES qBasic machine-language instructions ...................................... 71 qMinimum instruction execution time ................................ 0.24 µs (at 16.8 MHz oscillation frequency) qMemory size ROM ............................................................... 16 K to 60 K bytes RAM ................................................................. 640 to 2048 bytes qProgrammable input/output ports ............................................ 56 qSoftware pull-up resistors ................................................. Built-in q Interrupts 21 sources, 16 vectors ............................................... 3803 group (external 8, internal 12, software 1) 23 sources, 16 vectors ............................................... 3804 group (external 9, internal 13, software 1) qTimers ........................................................................... 16-bit ✕ 1 8-bit ✕ 4 (with 8-bit prescaler) qWatchdog timer ...........................................................