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M38861M2A-XXXHP View Datasheet(PDF) - MITSUBISHI ELECTRIC

Part NameM38861M2A-XXXHP Mitsubishi
MITSUBISHI ELECTRIC  Mitsubishi
DescriptionRAM size 2048bytes; single-chip 8-bit CMOS microcomputer
M38861M2A-XXXHP Datasheet PDF : 110 Pages
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FUNCTIONAL DESCRIPTION
CENTRAL PROCESSING UNIT (CPU)
The 3886 group uses the standard 740 Family instruction set. Re-
fer to the table of 740 Family addressing modes and machine
instructions or the 740 Family Software Manual for details on the
instruction set.
Machine-resident 740 Family instructions are as follows:
The FST and SLW instructions cannot be used.
The STP, WIT, MUL, and DIV instructions can be used.
[CPU Mode Register (CPUM)] 003B16
The CPU mode register contains the stack page selection bit, the
processor mode bits specifying the chip operation mode, etc.
The CPU mode register is allocated at address 003B16.
b7
b0
CPU mode register
(CPUM : address 003B16)
Processor mode bits
b1 b0
0 0 : Single-chip mode
0 1 : Memory expansion mode (Note)
1 0 : Microprocessor mode (Note)
1 1 : Not available
Stack page selection bit
0 : 0 page
1 : 1 page
Reserved
(Do not write “0” to this bit when using
XCIN–XCOUT oscillation function.)
Port XC switch bit
0 : I/O port function (stop oscillating)
1 : XCIN–XCOUT oscillating function
Main clock (XIN–XOUT) stop bit
0 : Oscillating
1 : Stopped
Main clock division ratio selection bits
b7 b6
0 0 : φ = f(XIN)/2 (high-speed mode)
0 1 : φ = f(XIN)/8 (middle-speed mode)
1 0 : φ = f(XCIN)/2 (low-speed mode)
1 1 : Not available
Note: This mode is not available for M38869M8A/MCA/MFA and the flash memory version.
Fig. 7 Structure of CPU mode register
MITSUBISHI MICROCOMPUTERS
3886 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
9
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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.

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