— 27 —
N o .
Pin Name
I n / O u t
Function
To/From
58
A15
O
Address bus
59
Vss
GND
60
Vcc
+3.3V source
61
A16
O
Address bus
62
A17
O
Address bus
63
A18
O
Address bus
64
A19
O
Address bus
65
A20
O
Address bus
66
A21
O
Address bus
67
A22
O
Address bus
68
Vss
GND
69
Vcc
+3.3V source
70
A23
O
Address bus
71
A24
O
Address bus
72
A25
O
Address bus
73
Vss (PLL)
GND for PLL
74
CAP1
O
Capacitor connecting terminal for PLL
75
Vcc (PLL)
+3.3V
source
for PLL
76
Vss
GND
77
ONENB
I
ON Circuit enable signal
BGA288
78
Vcc
+3.3V source
79
EXTAL
I
Oscillator in (10MHz)
X2
80
XTAL
O
Oscillator out (10MHz)
X2
81
TESTMDB
I
Test mode control
GND
82
Vss
GND
83
Vcc
+3.3V source
84
MD2 / RXD0
I
Data input of serial port 0
BGA288
85
MD1 / TXD0
I/O
Data output of serial port 0
BGA288
86
MD0 / SCK0
I/O
Not used
87
BREQB
I
Bus request
BGA288
88
RESETB
I
Reset signal from BGA288
BGA288
89
NMI
I
Non-maskable Interrupt request
BGA288
90
IRL3B
I
Interrupt request
BGA288
91
RXD1
I
Data input of serial port 1
IC5(RS232C),BGA288
92
TXD1
O
Data output of serial port 1
IC5(RS232C),BGA288
93
SCK1
I/O
Clock of serial port 1
BGA288
94
CTS1
I
Serial port 1 transmission permission
IC5(RS232C)
95
RTS1
O
Serial port 1 transmission request
IC5(RS232C)
96
BACKB
O
Bus access permission
BGA288
97
IOIS16B
I
Write protect input
BGA288
98
STATUS0
O
STATUS0 signal to BGA288
BGA288
99
ONSTATUSB
O
V3ROM (+3.3V) ON/OFF control. H=ON
BGA288,Power supply unit
100
Vss
GND
101
CKIO
I/O
System clock I/O
BGA288
102
Vcc
+3.3V source
103
MD4 / CE2BB
I/O
PCMCIA CE2B signal
BGA288
104
MD3 / CE2AB
I/O
PCMCIA CE2A signal
BGA288
105
ONB
I
On circuit start request
BGA288
106
RD / WRB
O
Read/Write signal
BGA288,RAM,ROM
107
RDB
O
Read pulse
BGA288,ROM,LCD unit
108
CS6B / CE1BB
O
Chip select-6 sigmal
BGA288
109
CS5B / CE1AB
O
Chip select-5 sigmal
BGA288
110
CS4B
O
Chip select-4 sigmal
BGA288,ROM Board
111
CS3B
O
Not used
112
CS2B
O
Chip select-2 sigmal
BGA288
113
CS1B
O
Chip select-1 sigmal
ROM Board
114
CS0B
O
Chip select-0 sigmal
ROM Board
115
Vss
GND
116
Vcc
+3.3V source
117
WE3B / ICIOWRB
O
D31-D24 select signal / IO Write
BGA288
118
WE2B / ICIORDB
O
D23-D16 select signal / IO Read
BGA288,ROM Board
Summary of Contents for PA-2400U
Page 1: ...Handheld Personal Computer PA 2400U PX 686 R MAR 1998 without price PA 2400U ...
Page 25: ... 22 7 Restoring starts 8 Click OK ...
Page 77: ... 74 P668 MROM MASK ROM for OS for dictionary ...
Page 78: ... 75 from MAIN PCB P686 LED LED ...
Page 79: ... 76 from MAIN PCB from MAIN PCB P686 PWKEY POWER KEY P686 2KEY EL CALB KEY ...
Page 80: ... 77 from MAIN PCB from MAIN PCB P686 ADP AC ADAPTOR P686 3PIN 3PIN I F ...