A4980 Datasheet, PDF (21/44 Pages) Allegro MicroSystems – The A4980 is a flexible microstepping motor driver with built-in translator for easy operation.

A4980
Automotive, Programmable Stepper Driver
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
TBLLD
1
1
PTP PT5 PT4 PT3 PT2 PT1 PT0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
Fault 0
FF TW1 TW0 OV
UV
ST OLB OLA BML BMH BPL BPH AML AMH APL APH
Fault 1
FF TW1 TW0 OV
UV
ST OLB OLA
0
0
SA5 SA4 SA3 SA2 SA1 SA0
Table Load Register
PTP Parity bit (odd parity)
PT(0..15)[5..0] Phase Table Value
Table Load Register Mapping
Step Angle Number
0%
PT(0)
PT(1)
PT(2)
PT(3)
PT(4)
PT(5)
PT(6)
PT(7)
PT(8)
PT(9)
PT(10)
PT(11)
PT(12)
PT(13)
PT(14)
PT(15)
Phase A
Phase B
0
32
16
48
1 31 33 63 15 17 47 49
2 30 34 62 14 18 46 50
3 29 35 61 13 19 45 51
4 28 36 60 12 20 44 52
5 27 37 59 11 21 43 53
6 26 38 58 10 22 42 54
7 25 39 57 9 23 41 55
8 24 40 56 8 24 40 56
9 23 41 55 7 25 39 57
10 22 42 54 6 26 38 58
11 21 43 53 5 27 37 59
12 20 44 52 4 28 36 60
13 19 45 51 3 29 35 61
14 18 46 50 2 30 34 62
15 17 47 49 1 31 33 63
16
48 0
32
Fault Register 0
FF
Fault register flag
TW1 Temperature diagnostic
TW0 Temperature diagnostic
OV Overvoltage on VBB detected
UV Undervoltage on VREG or VBB detected
ST
Stall detected
OLB Open load detected on phase B
OLA Open load detected on phase A
BML Overcurrent detected on BM output low side
BMH Overcurrent detected on BM output high side
BPL Overcurrent detected on BP output low side
BPH Overcurrent detected on BP output high side
AML Overcurrent detected on AM output low side
AMH Overcurrent detected on AM output high side
APL Overcurrent detected on AP output low side
APH Overcurrent detected on AP output high side
Fault Register 1
FF
Fault register flag
TW1 Temperature diagnostic
TW0 Temperature diagnostic
OV Overvoltage on VBB detected
UV Undervoltage on VREG or VBB detected
ST
Stall detected
OLB Open load detected on phase B
OLA Open load detected on phase A
SA[0..5] Step Angle Number read back
OLA Open load detected on phase A
TW[0..1] Temperature diagnostic
TW1 TW0 Thermal Indicator
0
0
No Fault
0
1
Cold Warning
1
0
Hot Warning
1
1
Overtemperature Shutdown
Allegro MicroSystems, Inc.
21
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com