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参数资料
| 型号： | PC33887VWR2 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, PDSO20 |
| 封装： | LEAD FREE, PLASTIC, HSOP-20 |
| 文件页数： | 9/32页 |
| 文件大小： | 859K |
| 代理商： | PC33887VWR2 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
17
33887
TYPICAL SWITCHING WAVEFORMS
Table 6. Truth Table
The tri-state conditions and the fault status are reset using D1 or D2. The truth table uses the following notations: L = LOW,
H = HIGH, X = HIGH or LOW, and Z = High impedance (all output power transistors are switched off).
Device State
Input Conditions
Fault
Status
Flag
Output States
EN
D1
D2
IN1
IN2
FS
OUT1
OUT2
Forward
H
L
H
L
H
L
Reverse
H
L
H
L
H
L
H
Freewheeling Low
H
L
H
L
H
L
Freewheeling High
H
L
H
Disable 1 (D1)
H
X
L
Z
Disable 2 (D2)
H
X
L
X
L
Z
IN1 Disconnected
H
L
H
Z
X
H
X
IN2 Disconnected
H
L
H
X
Z
H
X
H
D1 Disconnected
H
Z
X
L
Z
D2
Disconnected
H
X
Z
X
L
Z
Undervoltage (33)
H
X
L
Z
Overtemperature (34)
H
X
L
Z
Short Circuit (34)
H
X
L
Z
Sleep Mode EN
L
X
H
Z
EN Disconnected
Z
X
H
Z
Notes
33.
In the case of an undervoltage condition, the outputs tri-state and the fault status is SET logic LOW. Upon undervoltage recovery, fault
status is reset automatically or automatically cleared and the outputs are restored to their original operating condition.
34.
When a short circuit or overtemperature condition is detected, the power outputs are tri-state latched-OFF independent of the input
signals and the fault status flag is SET logic LOW.
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