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~---------------------------------------------------------
12
2.3.3
Interface Levels
Low:
High:
0.0 to 0.8 V
+2.4 to 5.0 V
2.3.4
Interface Circuits
( 1)
RECE IVER
R
=
I kO (Data lines, INPUT PRIME)
R
=
4700
(Data strobe line)
(2)
DRIVER
(Open collector)
2.3.5
Interface Time Chart
PARALLEL DATA
~
It-_ _ --'
1.0)lS
J--t-:;
11.0
ps
(MIN)
(MIN)
li-----W-:'
ACKNOWLEDGE
U~-----.U
--L-~~
ps - 500!Js
j
1_ 0)15 (MIN)
~0""().5)15
r
_ _ ---' I
J~L-+-
_ _
I.
T
~TO.5
Jis
U
DATA STROBE
BUSY
--1-h
-::-30
)Js
Note: Tb: Character code: 300 to 500
~S
CR code:
Printing and CR/LF
LF code"
Printing and CR/LF
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