MB90480B/485B Series
11
(Continued)
Pin No.
Pin name
I/O
circuit
type*3
Function
QFP*1
LQFP*2
74
72
P54
D
(CMOS)
This is a general purpose I/O port. In external bus mode, when the
HDE bit in the EPCR register is set to “1”, this pin functions as the
HRQ pin.
HRQ
In external bus mode, this pin functions as the hold request input
(HRQ) pin. When the HDE bit in the EPCR register is set to “0”, this
pin functions as a general purpose I/O port.
75
73
P55
D
(CMOS)
This is a general purpose I/O port. In external bus mode, when the
HDE bit in the EPCR register is set to “1”, this pin functions as the
HAK pin.
HAK
In external bus mode, this pin functions as the hold acknowledge
output (HAK) pin. When the HDE bit in the EPCR register is set to
“0”, this pin functions as a general purpose I/O port.
76
74
P56
D
(CMOS)
This is a general purpose I/O port. In external bus mode, when the
RYE bit in the EPCR register is set to “1”, this pin functions as the
RDY pin.
RDY
In external bus mode, this pin functions as the external ready (RDY)
input pin. When the RYE bit in the EPCR register is set to “0”, this
pin functions as a general purpose I/O port.
78
76
P57
D
(CMOS)
This is a general purpose I/O port. In external bus mode, when the
CKE bit in the EPCR register is set to “1”, this pin functions as the
CLK pin.
CLK
In external bus mode, this pin functions as the machine cycle clock
(CLK) output pin. When the CKE bit in the EPCR register is set to
“0”, this pin functions as a general purpose I/O port.
38 to 41 36 to 39
P60 to P63
H
(CMOS)
These are general purpose I/O ports.
AN0 to AN3
These are the analog input pins for A/D converter.
43 to 46 41 to 44
P64 to P67
H
(CMOS)
These are general purpose I/O ports.
AN4 to AN7
These are the analog input pins for A/D converter.
27
25
P70
G
(CMOS/H)
This is a general purpose I/O port.
SIN0
This is the UART serial data input pin.
28
26
P71
F
(CMOS)
This is a general purpose I/O port.
SOT0
This is the UART serial data output pin.
29
27
P72
G
(CMOS/H)
This is a general purpose I/O port.
SCK0
This is the UART serial communication clock I/O pin.
30
28
P73
G
(CMOS/H)
This is a general purpose I/O port.
TIN0
This is the 16-bit reload timer event input pin.
31
29
P74
F
(CMOS)
This is a general purpose I/O port.
TOT0
This is the 16-bit reload timer output pin.