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PDF AP1021AEN Data sheet ( Hoja de datos )
| Número de pieza | AP1021AEN | |
| Descripción | 32V Dual Microstepping Motor Driver IC | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AP1021]
AP1021AEN
32V Dual Microstepping Motor Driver IC with SPI
1. General Description
The AP1021 is a complete microstepping motor driver that can drive two stepper motors, to operate up to
28V motor supply voltage. N-channel LDMOS FETs are built in both high and low side for output driver to
achieve small package. It also includes under voltage detection and thermal shut down circuits. It is suitable
for driving various types of stepper motors.
2. Features
Built-in PWM Current Control Stepper Motor Driver
SPI Interface
Full Programmable Excitation Mode up to 1/64 step
Control Supply Voltage
(VC) 3.0V to 5.5V
Motor Drive Operating Voltage(VM) 2.0V to 28V
H-Bridge On Resistance 1.0
Adjustable PWM Motor Current by VIS pins.
Built-in UVLO(Under Voltage Lock Out circuit)
Built-in TSD(Thermal Shut Down circuit)
Built-in Charge Pump Circuit
Operating Temperature Range -40C to +85C
Small 32-pin QFN (5mm×5mm) Package
015000428-E-00
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2015/01
1 page  
[AP1021]
■ Pin Functions
No.
Pin Type
Name (Note 1)
1 OUT1A A
I/O
(Note 2)
O
Function
Motor driver output
2, 3 IS1 A
IO Current sense terminal
4 OUT1B A O Motor driver output
5, 20 VM P
-
Motor driver power supply
6 OUT2A A O Motor driver output
7, 8 IS2 A
IO Current sense terminal
9 OUT2B A O Motor driver output
10 EN D
11 TEST1 A
12 VIS A
I
I
I
Chip Enable (Power save)
TEST pin. This pin must be connected
to the ground.
Motor current set voltage input
13 VREF A O Voltage reference
14 LV A
O
Logic voltage output capacitor
connection
15 VC P
-
Control power supply
16 OUT4B A O Motor driver output
17, 18 IS4
A
I
Current sense terminal
19 OUT4A A O Motor driver output
21 OUT3B A O Motor driver output
22, 23 IS3
A
IO Current sense terminal
24 OUT3A A O Motor driver output
25 SCK D
I
Control data clock
26 SDI D
I
Control data input
27 CSN D
I
Chip select
28 SDO D
I
Control data output
29 OE12 D
30 OE34 D
31 TEST2 D
I
I
I
OUT1/2 Output Enable when SELOE
register bit=H
OUT3/4 Output Enable when SELOE
register bit=H
TEST pin. This pin must be connected
to the ground.
32 VG A
IO Charge-pump output voltage
Exposed
Pad
EP
GND -
Ground
Note 1. A(analog pin), D(digital pin), GND(ground pin), P(power pin)
Note 2. I(input pin), O(output pin), IO(input/output pin)
Note 3. Exposed Pad must be connected to GND.
Remark
200k Pull-down
(Note 3)
015000428-E-00
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2015/01
5 Page 
[AP1021]
Step#
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
Output
Current
IS1/3[%]
0
2
5
7
10
12
15
17
20
22
24
27
29
31
34
36
38
40
43
45
47
49
51
53
56
58
60
62
64
65
67
69
71
73
74
76
77
79
80
82
83
84
86
87
88
89
91
91
93
93
94
95
96
96
97
98
98
98
99
99
100
100
100
100
Direction of
Current
OUT1/3
X
CCW
Output
Current
IS2/4[%]
100
100
100
100
100
99
99
98
98
98
97
96
96
95
94
93
93
91
91
89
88
87
86
84
83
82
80
79
77
76
74
73
71
69
67
65
64
62
60
58
56
53
51
49
47
45
43
40
38
36
34
31
29
27
24
22
20
17
15
12
10
7
5
2
Direction of
Current
OUT2/ 4
CW
STEP12
STEP34
(bin) (hex)
00110000
30
00110001
31
00110011
33
00110010
32
00110110
36
00110111
37
00110101
35
00110100
34
00111100
3C
00111101
3D
00111111
3F
00111110
3E
00111010
3A
00111011
3B
00111001
39
00111000
38
00101000
28
00101001
29
00101011
2B
00101010
2A
00101110
2E
00101111
2F
00101101
2D
00101100
2C
00100100
24
00100101
25
00100111
27
00100110
26
00100010
22
00100011
23
00100001
21
00100000
20
01100000
60
01100001
61
01100011
63
01100010
62
01100110
66
01100111
67
01100101
65
01100100
64
01101100
6C
01101101
6D
01101111
6F
01101110
6E
01101010
6A
01101011
6B
01101001
69
01101000
68
01111000
78
01111001
79
01111011
7B
01111010
7A
01111110
7E
01111111
7F
01111101
7D
01111100
7C
01110100
74
01110101
75
01110111
77
01110110
76
01110010
72
01110011
73
01110001
71
01110000
70
015000428-E-00
- 11 -
2015/01
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet AP1021AEN.PDF ] | |
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