Schematic 1

STSPIN820 Stepper Motor Driver Carrier
©2018 Pololu Corporation
www.pololu.com
R
1
2
4
3
5
6
7
8
B1
A1
A2
B2
1
2
4
3
5
6
7
8
MODE1
MODE2
STEP
DIR
MODE3
4.7 uF
C1
VMOT
0.1 uF
C2
VMOT
B1
B2
A2
A1
VMOT
91k
R2
VCC
VREF
NP
R4
NP
R3
VCC
0.1 uF
C3
DIR
20
SENSEB1
14
REF
1
SENSEA1
5
SENSEB2
13
MODE2
22
MODE1
21
SENSEA2
6
OUTB1
12
VIN
10
OUTB2
11
SNSA
4
STEP
19
TOFF
24
DECAY
18
MODE3
23
SNSB
15
EN/FAULT
17
STBY/RESET
16
GND
2
OUTA2
8
VIN
9
OUTA1
7
GND
3
PAD
25
STSPIN820
VREF
0.2
R10
0.2
R11
10k
R9
10k
R8
VCC
nEN
nSTBY/nRESET
(nFAULT)
(nFAULT)
SMTJUMPER
EN/nFAULT
EN/nFAULT
47k
R5
nEN
VCC
SNSB
SNSA
TOFF
DECAYnSTBY/nRESET
20k
R6
VCC
*
R7
VCC
DECAY
clockwise
R1
10k
* SMT jumper on backside of board
PIC101
PIC102
COC1
PIC201
PIC202
COC2
PIC301
PIC302
COC3
PIJ101 PIJ102
COJ1
PIJP101
PIJP102
PIJP103
PIJP104
PIJP105
PIJP106
PIJP107
PIJP108
COJP1
PIJP201
PIJP202
PIJP203
PIJP204
PIJP205
PIJP206
PIJP207
PIJP208
COJP2
PIQ101
PIQ102
PIQ103
COQ1
PIR101
PIR102
PIR103
COR1
PIR201
PIR202
COR2
PIR301
PIR302
COR3
PIR401
PIR402
COR4
PIR501
PIR502
COR5
PIR601
PIR602
COR6
PIR701
PIR702
COR7
PIR801
PIR802
COR8
PIR901
PIR902
COR9
PIR1001
PIR1002
COR10
PIR1101
PIR1102
COR11
PIU101
PIU102
PIU103
PIU104
PIU105
PIU106
PIU107
PIU108
PIU109
PIU1010
PIU1011
PIU1012
PIU1013
PIU1014
PIU1015
PIU1016
PIU1017
PIU1018
PIU1019
PIU1020
PIU1021
PIU1022
PIU1023
PIU1024
PIU1025
COU1