參數(shù)資料
型號(hào)： UPD168110
廠商： NEC Corp.
英文描述： MICROSTEP DRIVER FOR DRIVING CAMERA LENS
中文描述： 微步驅(qū)動(dòng)驅(qū)動(dòng)光圈鏡頭
文件頁(yè)數(shù)： 10/18頁(yè)
文件大小： 200K
代理商： UPD168110
Data Sheet S15840EJ2V0DS
10
μ
PD168110
Reset function
When RESET = “L”, initialization is executed and the output goes into a Hi-Z state. When RESET = “H”, excitation
is started with the current of ch1 at +100% and the current of ch2 at 0% (one-phase excitation position). To perform
two-phase excitation driving, excitation is started with the currents of ch1 and ch2 at +100% after the mode has been
set. Be sure to execute a reset operation after power application. MOB outputs “L” until the pulse is output when
RESET goes “L”.
Output enable (OE) pin
The pulse output can be forcibly stopped from an external source by using the OE pin. When OE = “L”, the output
is forcibly made to go into a Hi-Z state.
Standby function
The
μ
PD168110 can enter the standby mode when the pulse is not output and when PS = “H” and
STOP = “H”. In the standby mode, as many internal circuits as possible are stopped so that the self current
consumption can be reduced. In the standby mode, the current consumption is 1
μ
A MAX. when external CLK input is
stopped. While CLK is being input, the current consumption is reduced to 300
μ
A MAX. by the current flowing into the
input buffer. The standby mode is released when PS = “L” and STOP = “L”.
Under voltage lockout circuit (UVLO)
This function is used to forcibly stop the operation of the IC to prevent malfunction of the circuits if V
DD
of the IC
drops during operation. Note that if the V
DD
voltage abruptly drops in the order of
μ
s, this function may not operate.
V
M
pin current shutdown circuit
A circuit that prevents a current from flowing into the VM pin when V
DD
= 0 V is provided. Therefore, the current
flowing into the VM pin is cut off when V
DD
= 0 V.
A current of up to 3
μ
A flows into the V
M
pin when V
DD
is applied so that the voltages on the V
DD
and V
M
pins can
be monitored.
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