
MB90470 Series
10
(Continued)
LQFP : FPT-100P-M05 package
QFP  : FPT-100P-M06 package
Pin no.
Pin name
Circuit
type
Description
LQFP
QFP
18
20
P42
G
 (CMOS/H) 
General purpose input/output port.
A10
In non-multibus bus mode, this pin functions as an external 
address pin.
SCK2
Single serial I/O clock input/output pin
19
20
21
22
P43, P44
F
 (CMOS) 
General purpose input/output ports.
A11, A12
In non-multibus bus mode, this pin functions as an external 
address pin.
μ
PG input pins
General purpose input/output ports.
MT00, MT01
22
24
P45
G
 (CMOS/H) 
A13
In non-multibus bus mode, this pin functions as an external 
address pin.
μ
PG input pin
General purpose input/output ports.
EXTC
23
24
25
26
P46, P47
F
 (CMOS) 
A14, A15
In non-multibus bus mode, this pin functions as an external 
address pin.
OUT4/OUT5
Output compare event output pins
68
70
P50
D
 (CMOS) 
General purpose input/output port. In external bus mode, this 
pin functions as the ALE pin
ALE
In external bus mode, this pin functions as the address load 
enable signal (ALE) pin
69
71
P51
D
 (CMOS) 
General purpose input/output port. In external bus mode, this 
pin functions as the RD pin.
RD
In external bus mode, this pin functions as the read strobe 
output (RD) pin.
70
72
P52
D
 (CMOS) 
General purpose input/output port. In external bus mode, this 
pin functions as the WRL pin when the WRE bit in the EPCR 
register is set to “1”.
WRL
In external bus mode, this pin functions as the lower data write 
strobe output (WRL) pin. When the WRE bit in the EPCR 
register is set to “0”,this pin functions as a general purpose 
input/output port.
71
73
P53
D
 (CMOS) 
General purpose input/output port. In external bus mode with 
16-bit bus width, this pin functions as the WRH pin when the 
WRE bit in the EPCR register is set to “1”.
WRH
In external bus mode with 16-bit bus width, this pin functions 
as the higher data write strobe output (WRH) pin. When the 
WRE bit in the EPCR register is set to “0”,this pin functions as 
a general purpose input/output port.