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3820 Datasheet

  • 3820

  • SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

  • 66頁(yè)

  • MITSUBISHI   MITSUBISHI

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MITSUBISHI MICROCOMPUTERS
3820 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 3820 group is the 8-bit microcomputer based on the 740 fam-
ily core technology.
The 3820 group has the LCD drive control circuit and the serial I/
O as additional functions.
The various microcomputers in the 3820 group include variations
of internal memory size and packaging. For details, refer to the
section on part numbering.
For details on availability of microcomputers in the 3820 group, re-
fer to the section on group expansion.
鈥?/div>
LCD drive control circuit
Bias ................................................................................... 1/2, 1/3
Duty ............................................................................ 1/2, 1/3, 1/4
Common output .......................................................................... 4
Segment output ......................................................................... 40
2 Clock generating circuit
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)
Watchdog timer ............................................................. 15-bit
!
1
Power source voltage
In high-speed mode .................................................... 4.0 to 5.5 V
(at 8MHz oscillation frequency and high-speed selected)
In middle-speed mode ................................................2.5 to 5.5 V
(at 8MHz oscillation frequency and middle-speed selected)
In low-speed mode ...................................................... 2.5 to 5.5 V
(Extended operating temperature version: 3.0 V to 5.5 V)
Power dissipation
In high-speed mode ........................................................... 32 mW
(at 8 MHz oscillation frequency)
In low-speed mode .............................................................. 45
碌W
(at 32 kHz oscillation frequency, at 3 V power source voltage)
Operating temperature range ................................... 鈥?20 to 85擄C
(Extended operating temperature version: 鈥?0 to 85擄C)
鈥?/div>
鈥?/div>
鈥?/div>
FEATURES
鈥?/div>
Basic machine-language instructions ....................................... 71
鈥?/div>
The minimum instruction execution time ............................ 0.5
碌s
(at 8MHz oscillation frequency)
鈥?/div>
Memory size
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
ROM .................................................................. 4 K to 32 K bytes
RAM ................................................................. 192 to 1024 bytes
Programmable input/output ports ............................................. 43
Software pull-up/pull-down resistors (Ports P0-P7 except Port P4
0
)
Interrupts .................................................. 16 sources, 16 vectors
(includes key input interrupt)
Timers ........................................................... 8-bit
!
3, 16-bit
!
2
Serial I/O1 ..................... 8-bit
!
1 (UART or Clock-synchronized)
Serial I/O2 .................................... 8-bit
!
1 (Clock-synchronized)
鈥?/div>
鈥?/div>
APPLICATIONS
Household appliances, consumer electronics, etc.
PIN CONFIGURATION (TOP VIEW)
P3
0
/SEG
16
P3
1
/SEG
17
P3
2
/SEG
18
P3
3
/SEG
19
P3
4
/SEG
20
P3
5
/SEG
21
P3
6
/SEG
22
P3
7
/SEG
23
P0
0
/SEG
24
P0
1
/SEG
25
P0
2
/SEG
26
P0
3
/SEG
27
P0
4
/SEG
28
P0
5
/SEG
29
P0
6
/SEG
30
P0
7
/SEG
31
P1
0
/SEG
32
P1
1
/SEG
33
P1
2
/SEG
34
P1
3
/SEG
35
P1
4
/SEG
36
P1
5
/SEG
37
P1
6
/SEG
38
P1
7
/SEG
39
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
SEG
15
SEG
14
SEG
13
SEG
12
SEG
11
SEG
10
SEG
9
SEG
8
V
CC
SEG
7
SEG
6
SEG
5
SEG
4
SEG
3
SEG
2
SEG
1
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
1 2 3 4
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
40
39
38
37
36
35
34
M38203M4-XXXFP
M38203M4-XXXFP
33
32
31
30
29
28
27
26
25
P2
0
P2
1
P2
2
P2
3
P2
4
P2
5
P2
6
P2
7
V
SS
X
OUT
X
IN
P7
0
/X
COUT
P7
1
/X
CIN
RESET
P4
0
P4
1
/蠁
SEG
0
COM
3
COM
2
COM
1
COM
0
V
L3
V
L2
V
L1
P6
1
/RTP
1
P6
0
/INT
3
/RTP
0
P5
7
/INT
2
P5
6
/T
OUT
P5
5
/CNTR
1
P5
4
/CNTR
0
P5
3
/S
RDY2
P5
2
/S
CLK2
P5
1
/S
OUT2
P5
0
/S
IN2
P4
7
/S
RDY1
P4
6
/S
CLK1
P4
5
/T
X
D
P4
4
/R
X
D
P4
3
/INT
1
P4
2
/INT
0
Package type : 80P6N-A
80-pin plastic molded QFP

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