Pin
NO.
Name
UP-3300
I/O
Description
40
RCVDT2
RCVDT3
IS
RS-232 reception to
send signal
41
/CI2
VCC
IS
+5V
42
/CS2
/CS3
O
RS-232 chip select
signal
43
/CD3
/SINT
IS
RS-232: /CD, IN-LINE
: /P1
44
BRK3
GND
IS
GND
45
TRNEMP3
GND
IS
GND
46
RCVRDY3
GND
IS
GND
47
TRNRDY3
GND
IS
GND
48
/CTS3
GND
IS
GND
49
RCVDT3
GND
IS
GND
50
/CI3
GND
IS
GND
51
/CS3
/SRCS
O
RS-232/INLINE chip
select signal
52
D0
D0
IO
Data bus (CPU)
53
D1
D1
IO
Data bus (CPU)
54
D2
D2
IO
Data bus (CPU)
55
D3
D3
IO
Data bus (CPU)
56
GND
GND
GND
57
D4
D4
IO
Data bus (CPU)
58
D5
D5
IO
Data bus (CPU)
59
D6
D6
IO
Data bus (CPU)
60
D7
D7
IO
Data bus (CPU)
61
GND
GND
GND
62
VCC
VCC
+5V
63
X1
NC
O OSI14 NC
64
X2
#
I OSI14
System clock
65
XOUT
CLK_USART
O
Clock (USART)
66
TRCK
NC
O
NC
67
AB0
AH0
O
Address bus for
USART
68
AB1
AH1
O
Address bus for
USART
69
US1CH
GND
IS
GND
70
PX
NC
O
NC
71
/POF
/POFF
IS
POFF signal
72
/RSRQ
/IRQ1
3S
RS232 INTRRUPT
73
/TRV
GND
IS
GND
74
RXDATA0
NC
O
NC
75
TXE
/SRESET
O
INLINE TRNS
ENABLE
76
/TRRQ
/TRQ2
3S
INLINE INTRRUPT
77
/TRQ1
/TRQ1
ON6
TIMER INTRRUPT
(RS232)
78
/TRQ2
NC
ON6
TIMER INTRRUPT
(INLINE)
79
A0
A0
I
Address bus for CPU
80
A1
A1
I
Address bus for CPU
81
A2
A2
I
Address bus for CPU
82
A3
A3
I
Address bus for CPU
83
A4
A4
I
Address bus for CPU
84
A5
A5
I
Address bus for CPU
85
/OPTCS
/OPTCS
I
Option chip select
(from MPCA)
86
/RD
/RDO
I
Read signal (from
CPU)
87
/WR
/WRO
I
Write signal (from
CPU)
88
/RES
/RES
IS
Reset signal (from
CPU)
89
DB0
DB0
IO
DATA BUS (USART)
Pin
NO.
Name
UP-3300
I/O
Description
90
DB1
DB1
IO
DATA BUS (USART)
91
DB2
DB2
IO
DATA BUS (USART)
92
DB3
DB3
IO
DATA BUS (USART)
93
GND
GND
GND
94
DB4
DB4
IO
DATA BUS (USART)
95
DB5
DB5
IO
DATA BUS (USART)
96
DB6
DB6
IO
DATA BUS (USART)
97
DB7
DB7
IO
DATA BUS (USART)
98
/R
/RDH
O
Read signal (to
USART)
99
/W
/WRH
O
Write signal (to
USART)
100 VCC
VCC
+5V
101 GND
GND
GND
102 RES
RES USART
O
Reset signal (to
USART)
103 TRNCLK
GND
I
GND
104 RCVCLK
GND
I
GND
105 DBTST
/SRCS
ID
RS-232/INLINE
USART chip select
106 UTST
VCC
ID
+5V
107 /CSA
/CS1
IS
USART_A chip select
108 TRNDTA
TXD1
O
RS-232 transmission
data signal
109 /DTRA
/DTR1
O
RS-232 data terminal
ready signal
110 /RTSA
NC
O
NC
111 RCVDTA
RCVDT1
IS
RS-232 reception
data signal
112 /CTSA
GND
IS
GND
113 /DSRA
/DSR1
IS
RS-232 data set
ready signal
114 TRNRDYA
TRNRDY1
O
RS-232 data
transmission enable
signal
115 RCVRDYA
RCVRDY1
O
RS-232 data
reception enable
signal
116 TRNEMPA
TRNEMP1
O
RS-232 transmission
buffer empty signal
117 SYCBKA
BRK1
IO
Break code detection
signal
118 GND
GND GND
119 /CSB
/CS2
IS
USART_B chip select
120 TRNDTB
TXD2
O
RS-232 transmission
data signal
121 /DTRB
/DTR2
O
RS-232 data terminal
ready signal
122 /RTSB
NC
O
NC
123 RCVDTB
RCVDT2
IS
RS-232 reception
data signal
124 /CTSB
GND
IS
GND
125 /DSRB
/DSR2
IS
RS-232 data set
ready signal
126 TRNRDYB
TRNRDY2
O
RS-232 data
transmission enable
signal
127 RCVRDYB
RCVRDY2
O
RS-232 data
reception enable
signal
128 TRNEMPB
TRNEMP2
O
RS-232 transmission
buffer empty signal
129 SYCBKB
BRK2
IO
Break code detection
signal
130 GND
GND
GND
7 – 11