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参数资料
| 型号： | A4980KLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 25/44页 |
| 文件大小： | 0K |
| 描述： | IC STEPPER DVR PROGR 28-TSSOP |
| 标准包装： | 1 |
| 应用： | 步进电机驱动器 |
| 输出数： | 1 |
| 电流 - 输出： | ±1.4A |
| 电压 - 负载： | 0 V ~ 50 V |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
| 包装： | 标准包装 |
| 其它名称： | 620-1461-6 |
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A4980
Automotive, Programmable Stepper Driver
arithmetic operators to be used, within the microcontroller, to
determine the size of the next step increment. Table 6 shows the
binary equivalent of each decimal number between –16 and +16.
Table 6. Binary Equivalents
2’s
2’s
Each increase in the Step Angle Number represents a forwards
movement of one-sixteenth microstep. Each decrease in the Step
Angle Number represents a reverse movement of one-sixteenth
microstep.
To move the motor one full step, the Step Angle Number must be
increased or decreased by 16. To move the motor one half step,
the Step Angle Number must be increased or decreased by 8. For
quarter step the increase or decrease is 4 and for eighth step, 2.
So, for example, to continuously move the motor forwards in
quarter-step increments, the number 4 (000100) is repeatedly
written to SC[5..0] through the serial interface Run register (see
figure 10). To move the motor backwards in quarter step incre-
ments, the number -4 (111100) is repeatedly written to SC[5..0]
(see figure 11). The remaining bits in the Run register should be
set for the required configuration and sent with the step change
number each time.
The step rate is controlled by the timing of the serial interface.
It is the inverse of the step time, t STEP , shown in figure 10. The
motor step only takes place when the STRn goes from low to
Decimal
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Complement
000000
000001
000010
000011
000100
000101
000110
000111
001000
001001
001010
001011
001100
001101
001110
001111
010000
Decimal
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
Complement
111111
111110
111101
111100
111011
111010
111001
111000
110111
110110
110101
110100
110011
110010
110001
110000
+4
1 0 1 0 1 0 1 0 1 0 0 0 0 1 0 0
SDI
SCK
STRn
t STEP
Figure 10. Serial interface sequence for quarter step in forward direction
-4
1 0 1 0 1 0 1 0 1 0 1 1 1 1 0 0
SDI
SCK
STRn
Figure 11. Serial interface sequence for quarter step in reverse direction
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
25
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相关代理商/技术参数 |
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| A4982 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:DMOS Microstepping Driver with Translator And Overcurrent Protection |
| A4982_V4 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:DMOS Microstepping Driver with Translator And Overcurrent Protection |
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| A4982SETTR-T | 功能描述:IC STEPPER MOTOR DRIVER 32QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
| A4982SLPTR | 制造商:Allegro MicroSystems LLC 功能描述:DMOS Microstepping Driver |
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