參數(shù)資料
型號(hào)： UPD16878GS-BGG
廠商： NEC Corp.
英文描述： MONOLITHIC QUAD H BRIDGE DRIVER CIRCUIT
中文描述： 單片四H橋驅(qū)動(dòng)電路
文件頁數(shù)： 15/32頁
文件大?。?/td> 242K
代理商： UPD16878GS-BGG
Data Sheet S15974EJ1V0DS
15
μ
PD16878
Remark
The meanings of the symbols listed in Table 5-4 are as follows:
ENABLE : Output setting (H : Conducts, L : Stops)
ROTATION : Rotation direction (H : Reverse (CCW), L : Forward (CW))
PULSEOUT : Output pulse signal
FF7 : Presence/absence of pulse in LATCH cycle (Outputs H level if output pulse information exists in
standard data.)
FF3 : Pulse gate (output while pulse exists)
FF2 : Outputs H level during start up wait time + start up drive wait time
FF1 : Outputs H level during start up wait time
CHECKSUM : Checksum output (H : when normal data is transmitted,
L : when abnormal data is transmitted)
CHOPPING : Chopping wave output (in original oscillation mode only)
<6th byte>
The 6th byte sets the peak output current value of
α
ch. The output current is determined by the EVR reference
voltage.
The 250-mV (TYP.) voltage input from an external source to the V
REF
pin is internally doubled and input to a 4-bit
D/A converter. By dividing this voltage by 4-bit data, an EVR reference voltage can be set inside the IC within the
range of 200 to 500 mV, in units of 20 mV.
The
μ
PD16878 can set two values of the EVR reference voltage in advance. This is done by using bits D0 to D3
or D4 to D7. Which of the two EVR reference voltage values is to be used is specified by the CURRENT SET bit in
the standard data.
If all the bits of the 6th byte are
“
0
”
, the EVR reference voltage of 200 mV is selected; if they are
“
1
”
, the EVR
reference voltage of 500 mV is selected.
Table 5-5. 6th Byte Data Configuration (Initial data)
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Data
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
0 or 1
Remark
Bits D4 to D7 : Reference voltage 2 (EVR
α
2
)
Bits D0 to D3 : Reference voltage 1 (EVR
α
1
)
<7th byte>
The 7th byte specifies the peak output current value of
β
ch. The output current is determined by the EVR
reference voltage.
The 250-mV (TYP.) voltage input from an external source to the V
REF
pin is internally doubled and input to a 4-bit
D/A converter. By dividing this voltage by 4-bit data, an EVR reference voltage can be set inside the IC within a range
of 200 to 500 mV, in units of 20 mV.
The
μ
PD16878 can set two values of the EVR reference voltage in advance. This is done using bits D0 to D3 or
D4 to D7. Which of the two EVR reference voltage values is to be used is specified by the CURRENT SET bit in the
standard data.
If all the bits of the 7th byte are
“
0
”
, the EVR reference voltage of 200 mV is selected; if they are
“
1
”
, the EVR
reference voltage of 500 mV is selected.
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