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3. Pin function
Pin No.
Symbol
I/O
1,2
P07,P06
I/O
3
DMARQ1
I
4
DMARQ0
I
5~8
P03~P00
I/O
9
VSS
-
10
INTP113
I
11
INTP112
I
12
DMAAK1
O
13
DMAAK0
O
14~17
P13~P10
I/O
18~21
INTP123~120
I
22~25
P103~P100
I/O
26~33
P77~P70
I
34
AVDD
-
35
GND
-
36
AVREF
I
37
NMI
I
38
P21
I/O
39
SO0
O
40
SI0
I
41
SCK0
I/O
42
TXD1
O
43
RXD1
I
44
P27
I/O
45
VDD
-
46
SCK2
I/O
47
SI2
I
48
SO2
O
49~53
P34~P30
I/O
54
SCK3
I/O
55
SI3
I
56
SO3
O
57
INTP140
I
TC74LCX04FT-X (IC960) : Low voltage hex inverter
1A
1
1Y
2
2A
3
2Y
4
3A
5
3Y
6
GND
7
Function
Port 0
DMA Request
DMA Request
Port 0
Ground
Interrupt request from peripherals
Interrupt request from peripherals
DMA acknowledge
DMA acknowledge
Port 1
Interrupt request from peripherals
Port 10
Port 7
Analog power supply
Ground
Analog reference voltage
Non-Maskable interrupt request
Port 2
Serial output
Serial input
Serial clock
Transmit data
Receive data
Port 2
Power supply for internal unit
Serial clock
Serial input
Serial output
Port 3
Serial clock
Serial input
Serial output
Interrupt request from peripherals
INPUTS
Vcc
14
A
L
6A
13
H
12
6Y
5A
11
10
5Y
9
4A
8
4Y
Pin No.
Symbol
I/O
58~61
P113~P110
I/O
62
CVDD
-
63
X2
-
64
X1
I
65
CVSS
-
66
CKSEL
I
67~70
MODE0~3
I
71
RESET
I
72~74
P127~P125
I/O
75
INTP150
I
76~79
P123~P120
I/O
80
PX7
I/O
81
WAIT
I
82
PX5
I/O
83
VSS
-
84~86
P97~P95
I/O
87
BCYST
O
88
P93
I/O
89
RD
O
90
UWR
O
91
LWR
O
92~99
CS7~CS0
O
100
HVDD
-
101~104
P67~P64
I/O
105~116
A19~A8
O
117
VSS
-
118~125
A7~A0
O
126
HVDD
-
127~134
D15~D8
I/O
135
VSS
-
136~143
D7~D0
I/O
144
VDD
-
OUTPUTS
Y
H
L
NX-HD10
Function
Port 11
Clock generator power supply
Crystal
Crystal
Clock generator ground
Clock generator operating mode select
Mode
Reset
Port 12
Interrupt request from peripherals
Port 12
Port X
Wait
Port X
Ground
Port 9
Bus cycle start timing
Port 9
Read
Upper write strobe
Lower write strobe
Chip select
Power supply for external pins
Port 6
Address bus
Ground
Address bus
Power supply for external pins
Data bus
Ground
Data bus
Power supply for internal unit
1-33
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