Radio Shack TRS-80 III User Manual

1=0
NOTE 2
r
~
I
390 ~ secs ----' ~ BOO ~
I
I t..l I usecs I
u~ I Ie r
I i I '11 I
...... -~:---+--.......;,-~~-~-~--:-: ........ ~
,..--..., I f--f-
I I
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INTERNAL
WRITE BUSY
WRITE ENABLE
NWRITEDATA
TRIM ERASE
WRITE
WAVEFORM
GENERATOR
WRITE CURRENT
NOTES
t = 0 =250 MILLISECONDS AFTER DRIVE MOTOR
STARTS OR 20 MILLISECONDS AFTER LAST STEP
PULSE.
(WHICHEVER IS THE LATEST TIME)
UNSYNCHRONIZED
B 5 MA PEAK TO PEAK
4 u SECONDS MINIMUM, B u SECONDS MAXIMUM
FIGURE 6. WRITE TIMING DIAGRAM
• NOTE
LINEAR OUTPUT FROM FILTER
OUTPUT FROM
DIFFERENTIATOR
READ DATA INTERFACE
t
t = 0
NOTES: t = 0 =250 MILLISECONDS AFTER DRIVE MOTOR STARTS,
OR
20 MILLISECONDS AFTER STEP COMMAND, OR
100
u SECONDS AFTER TERMINATION OF WRITE
BUSY, (WHICHEVER
IS THE LATEST TIME)
FIGURE 7. READ TIMING DIAGRAM
100

Radio Shack TRS-80 III Specifications

General

Brand	Radio Shack
Model	TRS-80 III
Category	Desktop
Language	English