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(Continued)
Pin No.
LQFP
QFP
72
74
73
75
74
76
76
78
28 to 31
30 to 33
56,66
58,68
51,
53,
61,
63,
71
73
32
34
35
37
33
35
47
49
48
50
49
51
25
27
21,
23,
82
84
9,
11
40,
42
79
81
*1: Only the MB90420 (A) series and MB90425 (A) series has this function.
*2: Only the MB90420 (A) series and MB90425 (A) series has this function.
GENERAL
Circuit
Pin Name
Type
P54
G
*1
(TX01
)
P55
G
*2
(RX0
)
P56
G
SGO
P57
G
SGA
V0 to V3
—
DVCC
—
DVSS
—
AVCC
—
AVSS
—
AVRH
—
MD0
B
MD1
MD2
D
C
—
VCC
—
VSS
—
1-13
Explanation of Function
General-purpose I/O port
CAN Interface 0 TX output pin
General-purpose I/O port
CAN Interface 0 RX input pin
General-purpose I/O port
Sound generator SG0 output pin
General-purpose I/O port
Sound generator SGA output pin
LCD Controller/driver reference power pin
High-current output buffer dedicated power input pin
(pin number: 54 to 57, 59 to 62, 64 to 67, and 69 to
72)
High-current output buffer dedicated GND power
pin (pin number: 54 to 57, 59 to 62, 64 to 67, and
69 to 72)
A/D Converter dedicated power input pin
A/D Converter dedicated GND power pin
A/D Converter Vref + input pin. Vref - is fixed to
AVSS.
Test mode input pin. Connect these pins to VCC.
Test mode input pin. Connect these pins to VSS.
External capacitor pin. Connect the 0.1 µF
capacitor to this pin and VSS.
Power input pin
GND Power pin
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