DRV8818_16 Datasheet, PDF (6/31 Pages) Texas Instruments – Stepper Motor Controller IC

DRV8818
SLVSAX9E – SEPTEMBER 2011 – REVISED JANUARY 2016
6.6 Timing Requirements
T_A = 25°C (unless otherwise noted)
1 f_STEP
2
t_WH(STEP)
3
t_WL(STEP)
4
t_SU(STEP)
5
t_H(STEP)
6 t_WAKE
7 t_SLEEP
8
t_ENABLE
9
t_DISABLE
10 t_RESETR
11 t_RESET
Step frequency
Pulse duration, STEP high
Pulse duration, STEP low
Setup time, command before STEP rising
Hold time, command after STEP rising
Wakeup time, SLEEPn inactive high to STEP input accepted
Sleep time, SLEEPn active low to outputs disabled
Enable time, ENABLEn inactive high to outputs enabled
Disable time, ENABLEn active low to outputs disabled
Reset release time, RESETn inactive high to outputs enabled
Reset time, RESETn active low to outputs disabled
6.7 Motor Driver Timing Switching Characteristics
T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
t_OFF
t_BLANK
t_DT
t_R
t_F
Off time
Current sense blanking time
Dead time
Rise time
Fall time
Rx = 56 kΩ, Cx = 680 pF
Rx = 56 kΩ, Cx = 680 pF
SRn = 0
STEP
1
2
3
DIR, USMx
SLEEPn, ENABLEn, RESETn
45
6
8
10
OUTPUT
Figure 1. Timing Diagram
www.ti.com
MIN NOM MAX UNIT
500 kHz
1
μs
1
μs
200
ns
200
ns
1 ms
5 μs
20 μs
20 μs
5 μs
5 μs
MIN TYP
35
44
900 1250
100
475
10
10
MAX
53
1500
800
80
80
UNIT
μs
ns
ns
ns
ns
7
9
11
6
Submit Documentation Feedback
Product Folder Links: DRV8818
Copyright © 2011–2016, Texas Instruments Incorporated