44
Pin No.
Pin Name
I/O
Description
45
A8
O
46
A9
O
47
A10
O
48
A11
O
49
A12
O
50
A13
O
51
A14
O
52
A15
O
53
A16
O
54
A17
O
55
A18
O
Address signal output to the flash memory (IC716)
56
A19
O
Address signal output terminal Not used (open)
57
VSS
—
Ground terminal
58
WAIT
I
Wait signal input from the ARP (IC702)
59
EEP SIO
I/O
Two-way data bus with the EEPROM (IC735)
60
EEP SCL
O
clock signal output to the EEPROM (IC735)
61
CLK
O
System clock output terminal Not used (open)
62
STBY
I
Hardware standby signal input terminal (fixed at “H”)
63
RES
I
System reset signal input from the ARP (IC702) and reset signal generator (IC734) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
64
NMI
I
NMI signal input terminal Not used (pull up)
65
VSS
—
Ground terminal
66
EXTAL
I
System clock input terminal (16 MHz)
67
XTAL
I
System clock input terminal (16 MHz)
68
VCC
—
Power supply terminal (+5V)
69
AS
O
Address strobe signal output terminal Not used (open)
70
RD
O
Strobe signal output for data reading to the servo digital signal processor (IC512), ARP (IC702),
expander (IC711, 712), flash memory (IC716) and S-RAM (IC717, 718)
71
HWR
O
Strobe signal output for data writing to the servo digital signal processor (IC512), ARP (IC702),
expander (IC712), flash memory (IC716) and upper byte data writing strobe signal output to the
S-RAM (IC717)
72
LWR
O
Strobe signal output for data writing to the expander (IC711) and lower byte data writing strobe
signal output to the S-RAM (IC716)
73
MD0
I
Input terminal for setting microcomputer operation mode (fixed at “L”)
74
MD1
I
Input terminal for setting microcomputer operation mode (fixed at “L”)
75
MD2
I
Input terminal for setting microcomputer operation mode (fixed at “H”)
76
AVCC
—
Power supply terminal (+5V)
77
VREF
I
Reference voltage input terminal (+5V)
78
AN0
I
Serial data input from the RS-232C (for check)
79
BUSY2
I
BUSY signal input from the servo digital signal processor (IC512)
80
ADS RDY
I
Ready signal input terminal (fixed at “H”)
81
IFBSY
I
BUSY signal input from the FL controller (IC1001)
82
PLIN
I
PL signal input from the servo digital signal processor (IC512)
83
AK0
I
Monitor signal input from the expander (IC711)
84
AK1
O
85
AK2
O
86
AVSS
—
Ground terminal
Address signal output to the flash memory (IC716) and S-RAM (IC717, 718)
Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)
Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)
Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)
Monitor signal output terminal (fixed at “L”)
