DESCRIPTION
The 3819 group is a 8-bit microcomputer based on the 740 family core technology.
The 3819 group has a flourescent display automatic display circuit and an 16-channel 8-bit A-D converter as additional functions.
The various microcomputers in the 3819 group include variations of internal memory size and packaging. For details, refer to the section on part numbering.
For details on availability of microcomputers in the 3819 group, refer to the section on group expansion.

FEATURES
● Basic machine-language instructions ...................................... 71
● The minimum instruction execution time ......................... 0.48 µs
   (at 8.4 MHz oscillation frequency)
● Memory size .................................................................................
                        ROM ............................................. 4K to 60 K bytes
                        RAM ........................................... 192 to 2048 bytes
● Programmable input/output ports ............................................ 54
● High-breakdown-voltage output ports ...................................... 52
● Interrupts ................................................. 20 sources, 16 vectors
● Timers ............................................................................. 8-bit ✕ 6
● Serial I/O (Serial I/O1 has an automatic transfer function)
   ...................................................... 8-bit ✕ 3(clock-synchronized)
● PWM output circuit ............... 8-bit ✕ 1(also functions as timer 6)
● A-D converter ............................................... 8-bit ✕ 16 channels
● D-A converter ................................................. 8-bit ✕ 1 channels
● Zero cross detection input ............................................ 1 channel
● Fluorescent display function
   Segments ........................................................................ 16 to 42
   Digits .................................................................................. 6 to 16
● 2 Clock generating circuit
   Clock (XIN-XOUT) ................................. Internal feedback resistor
   Sub-clock (XCIN-XCOUT) .........Without internal feedback resistor
   (connect to external ceramic resonator or quartz-crystal oscillator)
● Power source voltage
   In high-speed mode .................................................. 4.0 to 5.5 V
      (at 8.4 MHz oscillation frequency and high-speed selected)
   In middle-speed mode............................................... 2.8 to 5.5 V
      (at 8.4 MHz oscillation frequency)
   In low-speed mode .................................................... 2.8 to 5.5 V
      (at 32 kHz oscillation frequency)
● Power dissipation
   In high-speed mode ..........................................................35 mW
      (at 8.4 MHz oscillation frequency)
   In low-speed mode ............................................................ 60 µW
      (at 3 V power source voltage and 32 kHz oscillation frequency )
● Operating temperature range .................................... –10 to 85°C

APPLICATION
   Musical Instruments, household appliance, etc.