DESCRIPTION
The 3851 group (built-in 24 KB or more ROM) is the 8-bit microcomputer based on the 740 family core technology.
The 3851 group (built-in 24 KB or more ROM) is designed for the household products and office automation equipment and includes serial I/O functions, 8-bit timer, I2C-BUS interface, and A-D converter.

FEATURES
● Basic machine-language instructions ..................................... 71
● Minimum instruction execution time ................................. 0.5 µs (at 8 MHz oscillation frequency)
● Memory size
    ROM ................................................................ 24K to 32K bytes
    RAM....................................................................640 to 1K bytes
● Programmable input/output ports ........................................... 34
● Interrupts ................................................ 17 sources, 16 vectors
● Timers ............................................................................ 8-bit X 4
● Serial I/O1 .................... 8-bit X 1(UART or Clock-synchronized)
● Serial I/O2 ................................... 8-bit X 1(Clock-synchronized)
● Multi-master I2C-BUS interface .................................. 1 channel
● PWM .............................................................................. 8-bit X 1
● A-D converter ...............................................10-bit X 5 channels
● Watchdog timer ........................................................... 16-bit X 1
● PIN CONFIGURATION (TOP VIEW)
● Fig. 1 M38517M8-XXXFP/SP pin configuration
● Clock generating circuit ................................... Built-in 2 circuits (connect to external ceramic resonator or quartz-crystal oscillator)
● Power source voltage
    In high-speed mode ................................................. 4.0 to 5.5 V (at 8 MHz oscillation frequency)
    In middle-speed mode ............................................. 2.7 to 5.5 V (at 8 MHz oscillation frequency)
    In low-speed mode ................................................... 2.7 to 5.5 V (at 32 kHz oscillation frequency)
● Power dissipation
    In high-speed mode .........................................................34 mW (at 8 MHz oscillation frequency, at 5 V power source voltage)
    In low-speed mode
    Except M38517F8FP/SP ................................................. 60 µW
    M38517F8FP/SP ............................................................ 450 µW (at 32 kHz oscillation frequency, at 3 V power source voltage)
● Operating temperature range .................................. –20 to 85°C

APPLICATION
    Office automation equipment, FA equipment, Household products, Consumer electronics, etc.