参数资料
| 型号： | MC33970DWR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 22/36页 |
| 文件大小： | 0K |
| 描述： | IC GAUGE DRIVER SPI 24-SOIC |
| 标准包装： | 1 |
| 应用： | 步进电机驱动器，2 相 |
| 输出数： | 2 |
| 电流 - 输出： | 100mA |
| 电压 - 负载： | 6.5 V ~ 26 V |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 带卷 (TR) |
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FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
The bits in Table 18 are read-only bits.
ENB1 (OD15) — This bit indicates if Gauge 1 is enabled.
? 0 = Disabled
? 1 = Enabled
DIR1 (OD14) — This bit indicates the direction Gauge 1
pointer is moving.
? 0 = Toward position 0
? 1 = Away from position 0
DIRC1 (OD13) — This bit determines if the direction of the
most recent pointer movement is toward, or away from, the
last commanded position.
CMD1 (OD12) — This bit indicates if Gauge 1 is at the most
recently commanded position.
? 0 = At commanded position
? 1 = Not at commanded position
POS11:POS0 (OD11:OD0) — These 12 bits represent the
actual position of the pointer at the time CS transitions to a
logic [0].
Gauge 0 and 1 Pointer Velocity Status Information
Most recent valid PECCR command resulting in the
Gauge 0 and 1 Pointer Velocity status output:
? 0 = Direction of the pointer movement is toward the
commanded position
? 1 = Direction of the pointer movement is away from the
D11
1
D10
1
D9
1
D8
x
commanded position
x = Don’t care.
Table 19. Gauge 0 and 1 Pointer Velocity Status Output Register
Bits
Read
Write
OD15
1V7
–
OD14
1V6
–
OD13
1V5
–
OD12
1V4
–
OD11
1V3
–
OD10
1V2
–
OD9
1V1
–
OD8
1V0
–
OD7
0V7
–
OD6
0V6
–
OD5
0V5
–
OD4
0V4
–
OD3
0V3
–
OD2
0V2
–
OD1
0V1
–
OD0
0V0
–
The bits in Table 19 are read-only bits.
1V7:1V0 (OD15:OD8) — These eight bits represent the
velocity position value (refer to Table 21 , page 24 ) indicating
the actual velocity of Gauge 1 pointer at the time CS
transitions to a logic [0].
0V7:0V0 (OD7:OD0) — These eight bits represent the
velocity position value (refer to Table 21 ) indicating the
actual velocity of Gauge 0 pointer at the time CS transitions
to a logic [0].
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
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
33970
Analog Integrated Circuit Device Data
22
Freescale Semiconductor
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| MC33972ATEK | 功能描述:接口 - 专用 MULT SW DET SUP-WKUP RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
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| MC33972ATEW | 功能描述:接口 - 专用 MULT SW DET SUP-WKUP RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
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