１０
1
/STB
In
Strobe pulse to latch data,
Reading occurs at falling
edge.
2
3
4
5
6
7
8
9
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
In
In
In
In
In
In
In
In
These signals represent the 1
st
bit to 8
th
bit of the parallel
data representatively, each
signal is at HIGH level when
data is logic 1, and LOW
when data is logic 0.
10
/ACK
Out
Answer pulse, LOW level
signal indicates that data have
already been received and the
printer gets ready to receive
the next data.
11
BUSY
Out
HIGH level signal indicates
that the printer is BUSY and
can not receive data.
12
PE
Out
HIGH level signal indicates
that paper running out.
13
SEL
Out
Pulling up to HIGH level
signal by a resistor
32
/ERR
Out
LOW level signal indicates
that
there has error.
14, 15, 17, 18, 34, 36
NC
---
No connection
16, 19
～
30, 33
GND
---
Grounding logical 0 level
Note:
（
1
）
“In” denotes input to the printer
，
“Out” denotes output from the
printer.
（
2
）
Signal level is TTL standard.
Fig. 2-7 Pin assignment of 36pin parallel interface
The timing chart for interface signal of parallel interface is as Fig.2-8
shows:
