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DRV8805 Datasheet, PDF (6/16 Pages) Texas Instruments – UNIPOLAR STEPPER MOTOR DRIVER IC
◁
DRV8805
SLVSAW3A – JULY 2011 – REVISED JULY 2011
TIMING REQUIREMENTS
over operating free-air temperature range (unless otherwise noted)(1)
NO.
PARAMETER
DESCRIPTION
1 tSTEP
2
tWH(STEP)
3
tWL(STEP)
4
tSU(STEP)
5
tH(STEP)
6
tOE(ENABLE)
7
tPD(L-H)
8
tPD(H-L)
-
tRESET
Step period
Pulse duration, STEP high
Pulse duration, STEP low
Setup time, DIR, SMx to STEP rising
Hold time, DIR, SMx to STEP rising
Enable time, nENBL to output low
Propagation delay time, STEP to OUTx, low to high
Propagation delay time, STEP to OUTx, high to low
RESET pulse width
(1) Not production tested.
STEP
1
2
3
nENBL
STEP
DIR, SMx
OUTx
45
6
7
Figure 1. DRV8805 Timing Requirements
www.ti.com
MIN MAX UNIT
250
ns
1.9
ns
1.9
ns
1
ns
1
ns
50 ns
500 ns
500 ns
20
µs
8
6
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