![](http://datasheet.mmic.net.cn/330000/MB90487PFV_datasheet_16437531/MB90487PFV_11.png)
MB90480/485 Series
11
(Continued)
Pin No.
Pin name
Circuit
type
Function
LQFP*
1
QFP*
2
74
76
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.
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.
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.
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.
These are general purpose I/O ports.
These are the analog input pins.
These are general purpose I/O ports.
These are the analog input pins.
This is a general purpose I/O port.
RDY
76
78
P57
D
(CMOS)
CLK
36 to 39
38 to
41
P60 to P63
AN0 to AN3
P64 to P67
AN4 to AN7
P70
H
(CMOS)
41 to 44
43 to
46
H
(CMOS)
25
27
G
(CMOS/
H)
SIN0
This is the UART data input pin.
26
28
P71
SOT0
P72
F
(CMOS)
This is a general purpose I/O port.
This is the UART data output pin.
This is a general purpose I/O port.
27
29
G
(CMOS/
H)
G
(CMOS/
H)
SCK0
This is the UART clock I/O pin.
28
30
P73
This is a general purpose I/O port.
TIN0
This is the 16-bit reload timer event input pin.
29
31
P74
TOT0
F
(CMOS)
This is a general purpose I/O port.
This is the 16-bit reload timer output pin.
30
32
P75
F
(CMOS)
G
(
CMOS
/
H
)
F (CMOS) Mseries
MB90480
series
This is a general purpose I/O port.
P75
MB90485
series
This is a general purpose I/O port.
PWC2*
3
This is a PWC input pin.
31
33
P76
This is a general purpose I/O port.
P76
I
(NMOS/
H)
MB90485
series
This is a general purpose I/O port.
Serves as the I
2
C interface data I/O pin. During operation of the
I
2
C interface, leave the port output in a high impedance state.
SCL*
3
32
34
P77
F (CMOS) Mseries
This is a general purpose I/O port.
P77
I
(NMOS/
H)
MB90485
series
This is a general purpose I/O port.
Serves as the I
2
C interface data I/O pin. During operation of the
I
2
C interface, leave the port output in a high impedance state.
These are general purpose I/O ports.
SDA*
3
45,
46
47,
48
P80, P81
E
(
CMOS
/
H
)
IRQ0, IRQ1
External interrupt input pins.