
6
MB90640A Series
s PIN DESCRIPTION
(Continued)
*1: FPT-100P-M05
*2: FPT-100P-M06
Pin no.
Pin name
Circuit
type
Function
LQFP*1
QFP*2
80,
81
82,
83
X0,
X1
A
Crystal oscillator pins
47 to 49
49 to 51 MD0 to MD2
E
(CMOS)
Input pins for specifying an opration mode.
Use these pins by directly connecting VCC or VSS.
75
77
RST
G
(CMOS/H)
External reset request input pin
50
52
HST
F
(CMOS/H)
Hardware standby input pin
83 to 90
85 to 92 P00 to P07
J
(TTL)
General purpose I/O ports
This applies in single-chip mode with an external data bus
in 8-bit mode.
D00 to D07
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
J
(TTL)
General purpose I/O ports
This applies in non-multiplexed mode with an 8-bit external
data bus and in single-chip mode.
P08 to D15
In non-multiplexed mode with a 16-bit external data bus,
the I/O pins for the upper 8 bits of the 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,
2,
3 to 8
P20,
P21,
P22 to P27
B
(CMOS)
General purpose I/O ports
This applies in multiplexed mode.
A00,
A01,
A02 to A07
In non-multiplexed mode, the output pins for the lower 8
bits of the external address bus.
7,
8,
10 to 15
9,
10,
12 to 17
P30,
P31,
P32 to P37
B
(CMOS)
General purpose I/O ports
This applies in multiplexed mode.
A08,
A09,
A10 to A15
In non-multiplexed mode, the output pins for the upper 8
bits of the external address bus.
16 to 20,
22 to 24
18 to 22,
24 to 26
P40 to P44,
P45 to P47
B
(CMOS)
General purpose I/O ports
This applies when the upper address control register
specifies port operation.
A16 to A20,
A21 to A23
Output pins for A16 to A23 of the external address bus
This applies when the upper address control register
specifies address operation.