DESCRIPTION
The 3886 group is the 8-bit microcomputer based on the 740 fam-
ily 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 I
2
C bus interface can be added by option.
FEATURES

l Basic machine-language instructions ...................................... 71
l Minimum instruction execution time .................................. 0.4 µs
(at 10 MHz oscillation frequency)
l Memory size
ROM ................................................................. 32K to 60K bytes
RAM ............................................................... 1024 to 2048 bytes
l Programmable input/output ports ............................................ 72
l Software pull-up resistors ................................................. Built-in
l Interrupts ................................................. 21 sources, 16 vectors
(Included key input interrupt)
l Timers ............................................................................. 8-bit 5 4
l Serial I/O1 .................... 8-bit 5 1(UART or Clock-synchronized)
l Serial I/O2 ................................... 8-bit 5 1(Clock-synchronized)
l PWM output circuit ....................................................... 14-bit 5 2
l Bus interface .................................................................... 2 bytes
l I
2
C bus interface (option) ............................................. 1 channel
l A-D converter ............................................... 10-bit 5 8 channels
l D-A converter ................................................. 8-bit 5 2 channels
l Comparator circuit ...................................................... 8 channels
l Watchdog timer ............................................................ 16-bit 5 1
l Clock generating circuit ..................................... Built-in 2 circuits
(connect to external ceramic resonator or quartz-crystal oscillator)
l 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)
3886 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
l 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)
l Memory expansion possible (only for M38867M8A/E8A)
l Operating temperature range.................................... –20 to 85°C

l Supply voltage ................................................. VCC = 5 V ± 10 %
l Program/Erase voltage ............................... VPP = 11.7 to 12.6 V
l Programming method ...................... Programming in unit of byte
l Erasing method
Batch erasing ........................................ Parallel/Serial I/O mode
Block erasing .................................... CPU reprogramming mode
l Program/Erase control by software command
l Number of times for programming/erasing ............................ 100
l Operating temperature range (at programming/erasing)
..................................................................... Normal temperature
n Notes
1. The flash memory version cannot be used for application em-
bedded in the MCU card.
2. Power source voltage Vcc of the flash memory version is 4.0
to 5.5 V.
APPLICATION
Household product, consumer electronics, communications, note
book PC, etc.