DESCRIPTION
The 3803 group (Spec.L) is the 8-bit microcomputer based on the 740 family core technology. The 3803 group (Spec.L) 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.

FEATURES
• Basic machine-language instructions ................................. 71
• Minimum instruction execution time .......................... 0.24 µs
(at 16.8 MHz oscillation frequency)
• Memory size
Mask ROM/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)
• 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)
• Power source voltage (Mask ROM version)
[In high-speed mode]
At 16.8 MHz oscillation frequency ....................4.5 to 5.5 V
At 12.5 MHz oscillation frequency ....................4.0 to 5.5 V
At 8.4 MHz oscillation frequency ......................2.7 to 5.5 V
At 4.2 MHz oscillation frequency ......................2.2 to 5.5 V
At 2.1 MHz oscillation frequency ......................2.0 to 5.5 V
[In middle-speed mode]
At 16.8 MHz oscillation frequency ....................4.5 to 5.5 V
At 12.5 MHz oscillation frequency ....................2.7 to 5.5 V
At 8.4 MHz oscillation frequency ......................2.2 to 5.5 V
At 6.3 MHz oscillation frequency ......................1.8 to 5.5 V
[In low-speed mode]
At 32 kHz oscillation frequency.........................1.8 to 5.5 V