参数资料
型号: MC33970DWR2
厂商: Freescale Semiconductor
文件页数: 32/36页
文件大小: 0K
描述: IC GAUGE DRIVER SPI 24-SOIC
标准包装: 1
应用: 步进电机驱动器,2 相
输出数: 2
电流 - 输出: 100mA
电压 - 负载: 6.5 V ~ 26 V
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SOIC W
包装: 带卷 (TR)
TYPICAL APPLICATIONS
INTRODUCTION
Table 22. 33970 Setup, Configuration, and Usage Example (continued)
Step
7
Command
PECCR
Description
(a) Check the Status of the RTZ by sending the null command to monitor SO bit RTZ0, RTZ1
of Device Status SO
-
Bit PE12 is the null command
Reference Table
and or Figure
Table 7 (page 14 ),
(b) Is RTZ0 (OD2) logic [0]? If not, Gauge 0 still returning and null command should be
resent.
8
RTZ
(a) Return the other gauge to the zero stop. If the second gauge is driving a different pointer
than the first, a new RTZCR command may be required to change the Full Step time.
9
PECCR
(a) Check the Status of the RTZ by sending the null command to monitor SO, bit RTZ1 (OD3)
- Bit PE12 is the null command
Table 7 (page 14 ),
(b) Is RTZ1 (OD3) logic [0]? If not, Gauge 1 still returning and null command should be
resent.
10
VELR
(a) Change the maximum velocity of the gauge
- Bits V8:V9 determine which gauge(s) will change the maximum velocity
Table 7 (page 15 ),
- Bits V7:V0 determine the maximum velocity position from Table 21, Velocity Table
11
POS0R
(a) Position Gauge 0 pointer
- Bits P011:P00: Desired Pointer Position
Table 9 (page 16 ),
(b) Check SO for Out-of-Range V PWR
- Bit OVUV (OD6) logic [1]? If so, use UV (OD8) and OV (OD9) to decide whether to
RTZ after valid V PWR
(c) Check SO for overtemperature
- Bit OT0 logic [1]? If so, enable driver again. If OT0 continues to indicate
overtemperature, shut down Gauge 0
-
If RTZ0 returns to normal, re-establish the zero reference by RTZ command
12
POS1R
(a) Position Gauge 1 pointer
- Bits P1 11:P1 0: Desired Pointer Position
Table 10 (page 16 ),
(b) Check SO for Out-of-Range V PWR
- Bit OVUV logic [1]? If so, use UV (OD8) and OV (OD9) to decided whether to RTZ
after valid V PWR
(c) Check SO for overtemperature
- Bit OT1 logic [1]? If so, enable driver again. If OT1 continues to indicate overtemperature,
shut down Gauge 1.
- If OT1 returns to normal, re-establish the zero reference by RTZ command
13
POS0R
(a) Return the pointers close to zero position using POS0R
(b) Move pointer position at least 12 microsteps CW to the nearest full step prior to RTZ
14
POS1R
(c) Return the pointers close to zero position using POS1R
(d) Move pointer position at least 12 microsteps CW to the nearest full step position prior to
RTZ
(e) Check SO to see if Gauge 0 has moved
- Bit MOV0 logic [1]? If so, Gauge 0 moved to the first microstep
Table 10 (page 16 ),
33970
Analog Integrated Circuit Device Data
32
Freescale Semiconductor
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