DESCRIPTION
The 3886 group is the 8-bit microcomputer based on the 740 family core technology.
The 3886 group is designed for controlling systems that require analog signal processing and include two serial I/O functions, A-D converters, D-A converters, system data bus interface function, watchdog timer, and comparator circuit.
The multi-master I2C bus interface can be added by option.

FEATURES
<Microcomputer mode>
● Basic machine-language instructions ...................................... 71
● Minimum instruction execution time .................................. 0.4 µs
   (at 10 MHz oscillation frequency)
● Memory size
   ROM ................................................................. 32K to 60K bytes
   RAM ............................................................... 1024 to 2048 bytes
● Programmable input/output ports ............................................ 72
● Software pull-up resistors ................................................. Built-in
● Interrupts ................................................. 21 sources, 16 vectors
   (Included key input interrupt)
● Timers ............................................................................. 8-bit ✕ 4
● Serial I/O1 .................... 8-bit ✕ 1(UART or Clock-synchronized)
● Serial I/O2 ................................... 8-bit ✕ 1(Clock-synchronized)
● PWM output circuit ....................................................... 14-bit ✕ 2
● Bus interface .................................................................... 2 bytes
● I2C bus interface (option) ............................................. 1 channel
● A-D converter ............................................... 10-bit ✕ 8 channels
● D-A converter ................................................. 8-bit ✕ 2 channels
● Comparator circuit ...................................................... 8 channels
● Watchdog timer ............................................................ 16-bit ✕ 1
● 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 10 MHz oscillation frequency)
   In middle-speed mode ........................................... 2.7 to 5.5 V(*)
   (at 10 MHz oscillation frequency)
   In low-speed mode ............................................... 2.7 to 5.5 V (*)
   (at 32 kHz oscillation frequency)
                                        (*: 4.0 to 5.5 V for Flash memory version)
● Power dissipation
   In high-speed mode ..........................................................40 mW
   (at 10 MHz oscillation frequency, at 5 V power source voltage)
   In low-speed mode ............................................................ 60 µW
   (at 32 kHz oscillation frequency, at 3 V power source voltage)
● Memory expansion possible (only for M38867M8A/E8A)
● Operating temperature range.................................... –20 to 85°C

<Flash memory mode>
● Supply voltage ................................................. VCC = 5 V ± 10 %
● Program/Erase voltage ............................... VPP = 11.7 to 12.6 V
● Programming method ...................... Programming in unit of byte
● Erasing method
   Batch erasing ........................................ Parallel/Serial I/O mode
   Block erasing .................................... CPU reprogramming mode
● Program/Erase control by software command
● Number of times for programming/erasing ............................ 100
● Operating temperature range (at programming/erasing)
   ..................................................................... Normal temperature

APPLICATION
   Household product, consumer electronics, communications, note book PC, etc.