參數(shù)資料
型號： MC33976
廠商： 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述： Dual Gauge Driver with Configurable Response Time(帶可設(shè)置響應(yīng)時間的雙標(biāo)尺驅(qū)動器)
中文描述： 雙計驅(qū)動器，可配置的響應(yīng)時間（帶可設(shè)置響應(yīng)時間的雙標(biāo)尺驅(qū)動器）
文件頁數(shù)： 25/40頁
文件大?。?/td> 5332K
代理商： MC33976
Analog Integrated Circuit Device Data
Freescale Semiconductor
25
33976
FUNCTIONAL DEVICE OPERATION
STATE MACHINE
STATE MACHINE
STATE MACHINE OPERATION
The two-phase step motor has maximum allowable
velocities and acceleration and deceleration.The purpose of
the step motor state machine is to drive the motor with
maximum performance while remaining within the motor’s
voltage, velocity, and acceleration constraints.
A requirement of the state machine is to ensure the
deceleration phase begins at the correct time and pointer
position. When commanded, the motor will accelerate
constantly to the maximum velocity, then move toward the
commanded position. Eventually, the pointer will reach the
calculated location where the movement has to decelerate,
slowing safely to a stop at the desired position. During the
deceleration phase, the motor will not exceed the maximum
deceleration.
During normal operation, both step motor rotors are
microstepped with 24 steps per electrical revolution (see
Figure 8
). A complete electrical revolution results in two
degrees of pointer movement. There is a second (smaller)
state machine in the IC controlling these microsteps. This
state machine receives
clockwise
or
counter-clockwise
index
commands at intervals, stepping the motor in the appropriate
direction by adjusting the current in each coil. Normalized
values are provided in
Table 29
, page
26
.
Figure 8. Clockwise Microsteps
0
1
2
3
4
5
6
7
8
9 10
11 12 13 14 15
21
20
19
18
17
16
22 23
0
1
2
3
4
5
6
7
8
10 11 12 13 14 15 16 17 18
9
23
22
21
20
19
+
_
-
_
-
+
COS
x
SINx
I
MAX
max
I
MAX
max
I
MAX
I
MAX
I
I
COIL
I
I
COIL
0
0
0
0
FIGURE 6b. CW MICROSTEPS for PE6=1
Clockwise Microsteps for PE6=0
COS
x
SIN
x
I
MAX
I
COIL
I
MAX
I
MAX
I
MAX
I
COIL
+
+
-
-
-
0
0
相關(guān)PDF資料
PDF描述
MC33984 Dual Intelligent High-Current Self-Protected Silicon High-Side Switch (4.0 mOhm)(雙智能大電流帶自保護(hù)功能的硅高端開關(guān)（4mOhm）)
MC33989 System Basis Chip with High Speed CAN Transceiver(帶高速CAN收發(fā)器的系統(tǒng)基片)
MC33990 J-1850 SERIAL TRANSCEIVER(J-1850總線收發(fā)器)
MC33991 Gauge Driver Integrated Circuit(標(biāo)尺驅(qū)動器集成電路)
MC33993 Multiple Switch Detection Interface(多開關(guān)監(jiān)測接口)
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MC33981ABHFK 功能描述:電源開關(guān) IC - 配電 HF 4.0MOHM RDSON SWITCH RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
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MC33981BHFK 功能描述:電源開關(guān) IC - 配電 HF 4.0MOHM RDSON SWITCH RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
MC33981BHFKR2 功能描述:電源開關(guān) IC - 配電 HF 4.0MOHM RDSON SWITCH RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
MC33981BPNA 功能描述:電源開關(guān) IC - 配電 VIPER RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5
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