MITSUBISHI MICROCOMPUTERS
38C2 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DESCRIPTION
ꢀLCD drive control circuit
The 38C2 group is the 8-bit microcomputer based on the 740 family
Bias ................................................................................... 1/2, 1/3
Duty ........................................................................... 1/2, 1/3, 1/4
Common output .......................................................................... 4
Segment output ........................................................................ 24
ꢀTwo clock generating circuits
core technology.
The 38C2 group has an LCD drive control circuit, a 10-channel A-D
converter, and a Serial I/O as additional functions.
The various microcomputers in the 38C2 group include variations of
internal memory size and packaging. For details, refer to the section
on part numbering.
(connect to external ceramic resonator or quartz-crystal oscillator)
ꢀWatchdog timer ............................................................... 8-bit ꢀꢀ1
ꢀ LED direct drive port .................................................................. 8
(average current: 15 mA, peak current: 30 mA, total current: 90 mA)
ꢀPower source voltage
FEATURES
ꢀBasic machine-language instructions ....................................... 71
ꢀThe minimum instruction execution time .......................... 0.25 µs
(at 8MHz oscillation frequency)
In through mode.......................................................... 4.0 to 5.5 V
(at 8 MHz oscillation frequency)
ꢀMemory size
In frequency/2 mode ................................................... 1.8 to 5.5 V
(at 4 MHz oscillation frequency, A-D operation excluded)
In low-speed mode ..................................................... 1.8 to 5.5 V
(at 32 kHz oscillation frequency)
ROM ................................................................16 K to 60 K bytes
RAM ................................................................. 640 to 2048 bytes
ꢀProgrammable input/output ports ............................................. 51
(common to SEG: 24)
ꢀPower dissipation
ꢀInterrupts ................................................... 18 sources, 16 vectors
ꢀTimers ............................................................8-bit ꢀ 4, 16-bit ꢀ 2
ꢀA-D converter ................................................. 10-bit ꢀ 8 channels
ꢀSerial I/O ........................ 8-bit ꢀ 2 (UART or Clock-synchronized)
ꢀPWM .................. 10-bit ꢀ 2, 16-bit ꢀ 1 (common to IGBT output)
In through mode................................................................. 26 mW
(at 8 MHz oscillation frequency, VCC = 5 V)
In low-speed mode .............................................................21 µW
(at 32 kHz oscillation frequency, VCC = 3 V)
ꢀOperating temperature range ................................... – 20 to 85°C
PIN CONFIGURATION (TOP VIEW)
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
(KW
(KW
(KW
(KW
7
6
5
4
)/P0
)/P0
)/P0
)/P0
3
2
1
0
/SEG
/SEG
/SEG
/SEG
3
2
1
0
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
P2
P2
P2
P2
VL3
COM
4
5
6
7
/SEG20
/SEG21
/SEG22/VL1
/SEG23/VL2
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
(KW
(KW
(KW
(KW
3
)/P5
)/P5
)/P5
)/P5
7
/SRDY1
/SCLK1
2
6
0
1
5
/T
XD1
COM
COM
1
0
4
/R
XD1
2
M38C2XMX-XXXFP
P5
P5
3
/T4OUT/PWM
/T3OUT/PWM
1
0
COM
P3 /SRDY2/(LED0)
/SCLK2/(LED1)
/T /(LED2)
/R /(LED3)
/INT /(LED4)
/TXOUT/(LED5)
/T2OUT/φ/(LED6)
3
2
0
P5
P5
1
/INT
1
P3
P3
1
0
/INT
0
2
XD2
XD2
AVSS
VREF
P3
3
P3
P3
4
2
P4
P4
7
/RTP
/RTP
1
0
/AN
/AN
7
6
5
6
P3
6
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
Package type : 64P6N-A/64P6Q-A
Fig. 1 M38C2XMX-XXXFP pin configuration
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