DESCRIPTION
The 3803 group (Spec.H QzROM version) is the 8-bit microcomputer based on the 740 family core technology.
The 3803 group (Spec.H QzROM version) is designed for household products, office automation equipment, and controlling systems that require analog signal processing, including the serial interface functions, 8/16-bit timer, A/D converter and D/A converter.

FEATURES
• Basic machine-language instructions ................................. 71
• Minimum instruction execution time .......................... 0.24 µs
(at 16.8 MHz oscillation frequency)
• Memory size
QzROM .................................................... 16 K to 48 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)
• Serial interface .........8-bit × 2 (UART or Clock-synchronized)
8-bit × 1 (Clock-synchronized)
• PWM ....................................... 8-bit × 1 (with 8-bit prescaler)
• A/D converter ........................................ 10-bit × 16 channels
(8-bit reading enabled)
• D/A converter ............................................ 8-bit × 2 channels
• Watchdog timer ....................................................... 16-bit × 1
• LED direct drive port..............................................................8
• Clock generating circuit ............................. Built-in 2 circuits
(connect to external ceramic resonator or quartz-crystal oscillator)