STMicroelectronics Stepper motor driver mounting the L6474 EVAL6474H EVAL6474H Data Sheet
Product codes
EVAL6474H
Board description
EVAL6474H
4/10
Doc ID 022766 Rev 1
Figure 2.
EVAL6474H schematic
VDD
VREG
VS
SPI_OUT
GND
Application reference
FLAG
DIR
STBY/RES
STCK
1A 2A
1B 2B
VS
GND
SYNC
OPTION
STCK DIR nCS CK SDI SDO
ADCIN
DIR
FLAG
CK nCS STBY_RESET
STCK
MISO SDI
FLAG
STBY_RESET
SDO
MISO
CK
FLAG
STBY_RESET
nCS
SDO
MISO
STCK
DIR
VS
VREG
VDD
VREG
VDD
VDD
VREG
EXT_VDD
VS
EXT_VDD
VREG
VDD
EXT_VDD
VDD
VDD
VS
TP8
1
J1
MORSV
-508-2P
1 2
+
C9 100uF/63V
JP3
+
C2
47uF/6.3V
U1
L6474
VDD
17
VREG
6
OSCIN
7
OSCOUT
8
CP
10
VBOOT
11
ADCIN
5
VSA
2
VSA
26
VSB
12
VSB
16
PGND
13
PGND
27
OUT1A
1
OUT2A
28
OUT1B
14
OUT2B
15
AGND
9
DIR
4
DGND
21
SYNC
22
FLAG
24
SDO
18
SDI
20
CK
19
CS
23
STBY_RES
3
STCK
25
EPAD
29
JP5
J3
CON-FLA
T-5X2-180M
1
2
3
4
5
6
7
8
9
10
TP1
1
J7
N.M.
1
J5
MORSV
-508-2P
1 2
R6
39k
C1
1
10nF/50V
C5
100nF/4V
C14
1nF/4V
C1 220nF/16V
J6
MORSV
-508-2P
1
2
J4
N.M.
1
2
C13
3.3nF/4V
TP6
1
C8
100nF/50V
DL1
RED
2
1
JP4
TP2
1
R1 39k
C10
100nF/50V
TP4
1
TP7
1
+
C4
10uF/4V
C7
100nF/50V
R3 39k
TP5
1
TP3
1
JP1
+
C9A 100uF/63V
R5
470
D1
BA
V99
1
2
3
C15
1nF/4V
C6
100nF/50V
R4 39k
C3
100nF/6.3V
JP2
R2
50k
1
3
2
C16
1nF/4V
J2
SPI_IN
1
2
3
4
5
6
7
8
9
10
AM10276V1