MB90610A Series
■ PIN DESCRIPTION
Pin no.
Circuit
type
Pin name
Function
LQFP*1
QFP*2
80
81
82
83
X0
X1
A
Crystal oscillator pins
(Oscillator)
83 to 90 85 to 92 D00 to D07
K
(TTL)
In non-multiplex mode, the I/O pins for the lower 8 bits of the
external data bus.
AD00 to AD07
In multiplexed mode, the I/O pins for the lower 8 bits of the
external address/data bus.
91 to 98 93 to 100 P10 to P17
K
(TTL)
General purpose I/O ports
This applies in non-multiplexed mode with an 8-bit external
data bus.
P08 to D15
In non-multiplexed mode, the I/O pins for the upper 8 bits of
the external data bus
This applies when using a 16-bit external data bus.
AD08 to AD15
In multiplexed mode, the I/O pins for the upper 8 bits of the
external address/data bus.
99
100
1 to 6
1 to 8 P20 to P27
A00 to A07
B
General purpose I/O ports
(CMOS) This applies in multiplexed mode.
In non-multiplexed mode, the output pins for the lower 8 bits
of the external address bus.
General purpose I/O ports
7
8
9
10
P30 to P37
A08 to A15
B
(CMOS) This applies in multiplexed mode.
10 to 15 12 to 17
In non-multiplexed mode, the output pins for the upper 8 bits
of the external address bus.
General purpose I/O ports
(CMOS) This applies when the upper address control register
specifies port operation.
16 to 20 18 to 22 P40 to P47
22 to 24 24 to 26
B
A16 to A23
The output pins for A16 to 23 of the external address bus
This applies when the upper address control register
specifies address operation.
25 to 28 27 to 30 P70 to P73
INT0 to INT3
H
General purpose I/O ports
(CMOS/H) This applies in all cases.
External interrupt request input pins
As the inputs operate continuously when external interrupts
are enabled, output to the pins from other functions must be
stopped unless done intentionally.
*1: FPT-100P-M05
*2: FPT-100P-M06
(Continued)
6
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