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M38B57

Description
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER   
File Size703KB,69 Pages
ManufacturerMitsubishi
Websitehttp://www.mitsubishielectric.com/semiconductors/
Download Datasheet View All

M38B57 Overview

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER   

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38B5 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 38B5 group is the 8-bit microcomputer based on the 740 family
core technology.
The 38B5 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.
The 38B5 group has variations of internal memory size and packag-
ing. For details, refer to the section on part numbering.
For details on availability of microcomputers in the 38B5 group, refer
to the section on group expansion.
FEATURES
Basic machine-language instructions ....................................... 71
The minimum instruction execution time .......................... 0.48
µs
(at 4.19 MHz oscillation frequency)
Memory size
ROM ............................................. 24K to 60K bytes
RAM ............................................ 512 to 2048 bytes
Programmable input/output ports ............................................. 55
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
Buzzer output ............................................................................. 1
2 Clock generating circuit
Main clock (X
IN
–X
OUT
) ......................... Internal feedback resistor
Sub-clock (X
CIN
–X
COUT
) ......... Without internal feedback resistor
(connect to external ceramic resonator or quartz-crystal oscillator)
Power source voltage
In high-speed mode ................................................... 4.0 to 5.5 V
(at 4.19 MHz oscillation frequency and high-speed selected)
In middle-speed mode ............................................... 2.7 to 5.5 V
(at 4.19 MHz oscillation frequency and middle-speed selected)
In low-speed mode .................................................... 2.7 to 5.5 V
(at 32 kHz oscillation frequency and low-speed selected)
Power dissipation
In high-speed mode .......................................................... 35 mW
(at 4.19 MHz oscillation frequency)
In low-speed mode ............................................................ 60 µW
(at 32 kHz oscillation frequency, at 3 V power source voltage)
Operating temperature range ................................... –20 to 85 °C
APPLICATION
Musical instruments, VCR, household appliances, etc.
PIN CONFIGURATION (TOP VIEW)
P2
0
/B
UZ02
/FLD
0
P2
1
/FLD
1
P2
2
/FLD
2
P2
3
/FLD
3
P2
4
/FLD
4
P2
5
/FLD
5
P2
6
/FLD
6
P2
7
/FLD
7
P0
0
/FLD
8
P0
1
/FLD
9
P0
2
/FLD
10
P0
3
/FLD
11
P0
4
/FLD
12
P0
5
/FLD
13
P0
6
/FLD
14
P0
7
/FLD
15
P1
0
/FLD
16
P1
1
/FLD
17
P1
2
/FLD
18
P1
3
/FLD
19
P1
4
/FLD
20
P1
5
/FLD
21
P1
6
/FLD
22
P1
7
/FLD
23
62
61
60
59
58
57
56
55
54
53
52
51
64
63
50
49
48
47
46
45
44
43
42
41
P5
7
/S
RDY2/
S
CLK22
P5
6
/S
CLK21
P5
5
/TxD
P5
4
/RxD
P5
3
/S
CLK12
P5
2
/S
CLK11
P5
1
/S
OUT1
P5
0
/S
IN1
AV
SS
V
REF
P6
5
/S
STB1
/AN
11
P6
4
/INT
4
/S
BUSY1
/AN
10
P6
3
/AN
9
P6
2
/S
RDY1
/AN
8
P7
7
/AN
7
P7
6
/AN
6
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
M38B57MC-XXXFP
P3
0
/FLD
24
P3
1
/FLD
25
P3
2
/FLD
26
P3
3
/FLD
27
P3
4
/FLD
28
P3
5
/FLD
29
P3
6
/FLD
30
P3
7
/FLD
31
P8
0
/FLD
32
P8
1
/FLD
33
P8
2
/FLD
34
P8
3
/FLD
35
V
EE
P8
4
/FLD
36
P8
5
/RTP
0
/FLD
37
P8
6
/RTP
1
/FLD
38
4
5
6
7
8
9
10
2
3
11
12
Fig. 1 Pin Configuration of M38B57MC-XXXFP
P7
5
/AN
5
P7
4
/AN
4
P7
3
/AN
3
P7
2
/AN
2
P7
1
/AN
1
P7
0
/AN
0
P6
1
/CNTR
0
/CNTR
2
P6
0
/CNTR
1
P4
7
/INT
2
RESET
P9
1
/X
COUT
P9
0
/X
CIN
Vss
X
IN
X
OUT
Vcc
P4
6
/T
3OUT
P4
5
/T
1OUT
P4
4
/PWM
1
P4
3
/B
UZ01
P4
2
/INT
3
P4
1
/INT
1
P4
0
/INT
0
P8
7
/PWM
0
/FLD
39
Package type : 80P6N-A
80-pin plastic-molded QFP
13
14
15
16
17
18
19
20
21
22
23
24
1
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