參數(shù)資料
型號： M38B4XMXH
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機
文件頁數(shù)： 1/78頁
文件大小： 1214K
代理商： M38B4XMXH
38B4 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
DESCRIPTION
The 38B4 group is the 8-bit microcomputer based on the 740 family
core technology.
The 38B4 group has six 8-bit timers, a 16-bit timer, a fluorescent
display automatic display circuit, 12-channel 10-bit A-D converter, a
serial I/O with automatic transfer function, which are available for
controlling musical instruments and household appliances.
FEATURES
Basic machine-language instructions ....................................... 71
Minimum instruction execution time ................................. 0.48 μs
(at 4.2 MHz oscillation frequency)
Memory size
ROM .............................................48K to 60K bytes
RAM ..........................................1024 to 2048 bytes
Programmable input/output ports ............................................. 51
High-breakdown-voltage output ports ...................................... 36
Software pull-up resistors
(Ports P5, P6
1
to P6
5
, P7, P8
4
to P8
7
,
P9)
Interrupts .................................................. 21 sources, 16 vectors
Timers ...........................................................8-bit
6, 16-bit
1
Serial I/O1 (Clock-synchronized) ................................... 8-bit
1
......................(max. 256-byte automatic transfer function)
Serial I/O2 (UART or Clock-synchronized) .................... 8-bit
1
PWM ............................................................................ 14-bit
1
8-bit
1 (also functions as timer 6)
A-D converter .............................................. 10-bit
12 channels
Fluorescent display function......................... Total 40 control pins
Interrupt interval determination function ..................................... 1
Watchdog timer ............................................................ 20-bit
1
Fig. 1 Pin configuration of M38B4xMxH-XXXXFP
Package type : 80P6N-A
80-pin plastic-molded QFP
PIN CONFIGURATION (TOP VIEW)
Buzzer output ............................................................................. 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 4.2 MHz oscillation frequency)
2.7 to 5.5 V
(at 2.0 MHz oscillation frequency)
In middle-speed mode................................................2.7 to 5.5 V
(at 4.2 MHz oscillation frequency)
In low-speed mode .....................................................2.7 to 5.5 V
(at 32 kHz oscillation frequency)
Power dissipation
In high-speed mode ..........................................................35 mW
(at 4.2 MHz oscillation frequency)
In low-speed mode .............................................................60 μW
(at 32 kHz oscillation frequency, at 3 V power source voltage)
In stop mode .........................................................................1 μA
(at clock stop)
Operating temperature range ................................... –20 to 85 °C
APPLICATION
Musical instruments, VCR, household appliances, etc.
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
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1
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3
3
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6
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7
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8
3
9
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4
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9
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7
8
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6
7
8
9
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1
2
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4
5
6
7
8
9
0
P
2
0
/
B
U
Z
0
2
/
F
L
D
0
P
2
1
/
F
L
D
1
P
2
2
/
F
L
D
2
P
2
3
/
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L
D
3
P
2
4
/
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4
P
2
5
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L
D
5
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6
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6
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2
7
/
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7
P
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1
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1
8
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1
3
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2
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P
7
1
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1
P
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P
T
4
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6
5
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1
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7
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1
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1
A
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9
A
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