MITSUBISHI MICROCOMPUTERS
3886 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
●Power dissipation
DESCRIPTION
The 3886 group is the 8-bit microcomputer based on the 740 fam-
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
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.
2
The multi-master I C bus interface can be added by option.
<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
FEATURES
<Microcomputer mode>
●Basic machine-language instructions ...................................... 71
●Minimum instruction execution time .................................. 0.4 µs
(at 10 MHz oscillation frequency)
Batch erasing ........................................ Parallel/Serial I/O mode
Block erasing .................................... CPU reprogramming mode
●Program/Erase control by software command
●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)
●Number of times for programming/erasing ............................ 100
●Operating temperature range (at programming/erasing)
..................................................................... Normal temperature
■Notes
●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
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.
2
●I C bus interface (option) ............................................. 1 channel
APPLICATION
●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
Household product, consumer electronics, communications, note
book PC, etc.
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)
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