MB90552APFV Просмотр технического описания (PDF) - Fujitsu
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MB90552APFV Datasheet PDF : 58 Pages
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MB90550A/550B Series
s PIN DESCRIPTION
Pin no.
QFP LQFP
82
80
83
81
77
75
52
50
85 to 92 83 to 90
93 to
100
91 to 98
1 to 8
99,100,
1 to 6
9
7
10
8
12
10
13
11
Pin name
X0
X1
RST
HST
P00 to P07
AD00 to
AD07
P10 to P17
AD08 to
AD15
P20 to P27
A16 to A23
P30
ALE
P31
RD
P32
WRL
P33
WRH
Circuit type
Function
A
A
B
C
D
(CMOS)
D
(CMOS)
E
(CMOS)
E
(CMOS)
E
(CMOS)
E
(CMOS)
E
(CMOS)
Oscillation pin
Oscillation pin
Reset input pin
Hardware standby input pin
General-purpose I/O ports.
A pull-up resistor can be added (RD07 to RD00 = 1) by using
the pull-up resistor setting register (RDR0).
D07 to D00 = 1: Disabled when the port is set for output.
Serve as lower data I/O/lower address output (AD00 to AD07)
pins in the external bus mode.
General-purpose I/O ports.
A pull-up resistor can be added (RD17 to RD10 = 1) by using the
pull-up resistor setting register (RDR1).
D17 to D10 = 1: Disabled when the port is set for output.
Serve as upper data I/O/middle address output (AD08 to AD15)
pins in the 16-bit bus-width, external bus mode.
General-purpose I/O ports.
This function is enabled either in single-chip mode or with the
external address output control register set to “Port”.
External address bus A16 to A23 output pins.
This function is enabled in an external-bus enabled mode with
the external address output register set to “Address”.
General-purpose I/O port.
This function is enabled in single-chip mode.
Address latch enable output pin.
This function is enabled in an external-bus enabled mode.
General-purpose I/O port.
This function is enabled in single-chip mode.
Read strobe output pin for the data bus.
This function is enabled in an external-bus enabled mode.
General-purpose I/O port.
This function is enabled in single-chip mode.
Write strobe output pin for the lower eight bits of the data bus.
This function is enabled in an external-bus enabled mode.
General-purpose I/O port.
This function is enabled in single-chip mode.
Write strobe output pin for the upper eight bits of the data bus.
This function is enabled in an external-bus enabled mode.
(Continued)
7
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