MB90580B View Datasheet(PDF) - Fujitsu
Part Name
Description
MFG CO.
MB90580B Datasheet PDF : 124 Pages
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MB90580B Series
s PIN DESCRIPTION
Pin no.
Pin name
QFP*1 LQFP*2
Circuit
type
Function
82
80
X0
A
Oscillator pin
83
81
X1
A
Oscillator pin
52
50
HST
C
Hardware standby input pin
77
75
RST
B
Reset input pin
P00 to
P07
85 to 92 83 to 90
AD00 to
AD07
General-purpose I/O ports.
A pull-up resistor can be assigned (RD07 to RD00=“1”) by the pull-
D
up resistor setting register (RDR0). [These pins are disabled with
(CMOS/H) the output setting (DDR0 register: D07 to D00=“1”).]
In external bus mode, the pins function as the lower data I/O or low-
er address outputs (AD00 to AD07).
93 to
100
P10 to
P17
91 to 98
AD08 to
AD15
General-purpose I/O ports.
A pull-up resistor can be assigned (RD17 to RD10=“1”) by the pull-
F
up resistor setting register (RDR1). [These pins are disabled with
(CMOS/H) the output setting (DDR1 register: D17 to D10 =“1”).]
In 16-bit external bus mode, the pins function as the upper data
I/O or middle address outputs (AD08 to AD15).
1 to 8
99,100,
1 to 6
P20 to
P27
A16 to
A23
F
(CMOS/H)
General-purpose I/O ports
In external bus mode, pins for which the corresponding bit in the
HACR register is “1” function as the A16 to A23 pins.
In external bus mode, pins for which the corresponding bit in the
HACR register is “1” function as the upper address output pins
(A16 to A23).
9
7
P30
General-purpose I/O port
F
Functions as the ALE pin in external bus mode.
ALE
(CMOS/H) Functions as the address latch enable signal pin (ALE) in external
bus mode.
10
8
P31
General-purpose I/O port
F
Functions as the RD pin in external bus mode.
(CMOS/H)
RD
Functions as the read strobe output pin (RD) in external bus mode.
General-purpose I/O port
P32
Functions as the WRL pin in external bus mode if the WRE bit is
12
10
F
“1”.
(CMOS/H)
WRL
Functions as the lower data write strobe output pin (WRL) in
external bus mode.
General-purpose I/O port
P33
Functions as the WRH pin in 16-bit external bus mode if the WRE
13
11
F
bit in the EPCR register is “1”
(CMOS/H)
WRH
Functions as the upper data write strobe output pin (WRH) in
external bus mode.
*1: FPT-100P-M06
*2: FPT-100P-M05
(Continued)
9
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