DESCRIPTION
The 3804 group (Spec. H) is the 8-bit microcomputer based on the 740 family core technology. The 3804 group (Spec. H) is designed for household products, of fice automation equipment, and controlling systems that require analog signal processing, including the A/D converter and D/A converters.

FEATURES
●Basic machine-language instructions ...................................... 71
●Minimum instruction execution time ................................ 0.24 µs
(at 16.8 MHz oscillation frequency)
●Memory size
Flash memory .............................................................. 60 K bytes
RAM ............................................................................ 2048 bytes
●Programmable input/output ports ............................................ 56
●Software pull-up resistors ................................................. Built-in
●Interrupts
21 sources, 16 vectors .................................................................
(external 8, internal 12, software 1)
●Timers ........................................................................... 16-bit ✕ 1
8-bit ✕ 4
(with 8-bit prescaler)
●Watchdog timer ............................................................ 16-bit ✕ 1
●Serial interface
Serial I/O1, 3 ............... 8-bit ✕ 2 (UART or Clock-synchronized)
Serial I/O2 ................................... 8-bit ✕ 1 (Clock-synchronized)
●PWM ............................................8-bit ✕ 1 (with 8-bit prescaler)
●Multi-master I2C-BUS interface ................................... 1 channel
●A/D converter ............................................. 10-bit ✕ 16 channels
(8-bit reading enabled)
●D/A converter .................................................. 8-bit ✕ 2 channels
●LED direct drive port .................................................................. 8
●Clock generating circuit ..................................... Built-in 2 circuits
(connect to external ceramic resonator or quartz-crystal oscillator)