參數(shù)資料
型號(hào)： UPD168117AFC-BA2-E1-A
廠商： NEC Corp.
英文描述： 7-CHANNEL H-BRIDGE DRIVER WITH A MICRO STEP FUNCTION SUPPORTING PULSE INPUT
中文描述： 7通道H -橋甲微步支脈沖輸入功能驅(qū)動(dòng)程序
文件頁(yè)數(shù)： 13/24頁(yè)
文件大?。?/td> 275K
代理商： UPD168117AFC-BA2-E1-A
Data Sheet S17486EJ1V0DS
13
μ
PD168117A
Figure 7
1. Concept of Micro Step Drive Operation
A
M
+
7.4 Input Signals (CLK, OE and CW pins, stepping motor control methods)
The motor is driven by the pulses input to the CLK
1
(CLK
2
) pin. The pulses advance by one at the rising and falling
edges of the CLK
1
(CLK
2
) signal.
When the CLK
1
(CLK
2
) pin is fixed to low levels, the internal excitation positions do not progress, regardless of the
input status of the OE
1
(OE
2
) pin.
Since 1 electrical angle cycle is divided by 128, it equals 1 electrical angle cycle because of the 64-clock input.
Since both edges are used for control, the pulse intervals that are output rely on the pulse duty which is input. It is
suggested that pulses with a duty of 50% should be input.
The rotational direction of the motor is set by CW
1
(CW
2
).
In CW mode, the current for ch2 (ch4) is output delayed by a 90o phase in relation to the current for ch1 (ch3).
In CCW mode, the current for ch2 (ch4) is output advanced by a 90o phase in relation to the current for ch1 (ch3).
7.5 Output Enable (OE) Pin
The OE
1
(OE
2
) pin can be used to forcibly stop pulse output of ch1 and ch2 (or ch3 and ch4).
When OE
1
(OE
2
) = L, the output is forcibly made to go into Hi-Z.
Moreover, since an internal excitation position can
make it go on also at OE
1
(OE
2
) pin = L, an internal excitation position advances in inputting a pulse into CLK
1
(CLK
2
)
pin.
The internal information will be held if OE
1
(OE
2
) = L and CLK
1
(CLK
2
) pin are fixed to low level. Motor position
information is memorized unless it is reset. In performing stepping motor control, be sure to give as OE
1
(OE
2
) = H.
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