IEEE-488 Interface
_____________________________________________________________________________________________________________________________________
9-22
PIN ASSIGNMENTS IEEE-488 INTERFACE
Data Bus:
DIO 1-DIO 8 Data Bits 1-8
I/O
Data
Transfer
Control Bus
DAV
Data Valid
I/O
NRFD
Not ready for
Data
I/O
NDAC
No Data
Accepted
I/O
Interface
Control Bus:
IFC
Interface Clear
I
ATN
Attention
I
SRQ
Service Request O
REN
Remote Enable
I
EOI
End or Identify
I/O
Attention!
Avoid any discharge of electrostatic voltages over the IEEE-488
connector, since it can lead to damage or destruction of the unit.
1
2
3
4
5
6
7
8
9
11
12
10
24
23
22
21
20
19
18
17
16
15
14
13
DIO 1
DIO 2
DIO 3
DIO 4
EOI
DAV
NRFD
NDAC
IFC
SRQ
ATN
SHLD
GND
GND (ATN)
GND (SRQ)
GND (IFC)
GND (NDAC)
GND (NRFD)
GND (DAV)
REN
DIO 8
DIO 7
DIO 6
DIO 5
GND = Signal Ground (µP Ground)
SHLD = Shielding
