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參數(shù)資料
| 型號： | MCZ33976EG |
| 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 esponse Time |
| 中文描述： | 雙計驅(qū)動器，可配置esponse時間 |
| 文件頁數(shù)： | 32/41頁 |
| 文件大?。?/td> | 551K |
| 代理商： | MCZ33976EG |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
32
33976
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
microcontroller via the status message that the RTZ was
successful. The RTZ automatically disables, allowing other
commands to be valid. In the event the master determines an
RTZ sequence is not working properly (i.e., the RTZ taking
too long), it can disable the command via the RTZR bit RZ1.
RTZCR bits RC10:RC5 are written to preload the
accumulator with a predetermined value that will assure an
accurate pointer stall detection. This preloaded value is
determined during application development by disabling the
automatic shutdown feature of the device with the RTZR bit
RZ4. This operating mode allows the master to monitor the
RTZ event, using the accumulator information available via
the SO if the device is configured to provide the RTZ
Accumulator Status. The unconditional RTZ event can be
turned OFF using the RTZR bit RZ1.
If the Position 0 location bit is in the default logic [0] mode,
then during an RTZ event the pointer is returned counter-
clockwise (CCW) using full steps at a constant speed
determined by the RTZCR RC3:RC0 and RC12:RC11 bits
during RTZ configuration (see
Figure 12
). Full steps are used
during an RTZ so that only one coil of the motor is being
driven at any time. The coil not being driven is used to
determine if the pointer is moving. If the pointer is moving, the
EMF signal that is present in the non-driven coil is processed
by integrating the signal present on the opened pin of the coil
while essentially grounding the other end.
Figure 12. Full Steps Counterclockwise
The IC automatically prepares the non-driven coil at each
step, waits for a predetermined blanking time, then
processes the signal for the duration of the full step. When
the pointer reaches the stop and no longer moves, the
dissipating flux is detected. The processed results are placed
in the RTZ accumulator, then compared to a decision
threshold. If the signal exceeds the decision threshold, the
pointer is assumed to be moving. If the threshold value is not
exceeded, the drive sequence is stopped if RTZR bit RZ4 is
logic [0]. If bit RZ4 is logic [1], the RTZ movement will
continue indefinitely until the RTZR bit RZ1 is used to stop the
RTZ event.
A pointer that is not on a full step location or that is in
magnetic alignment prior to the RTZ event may cause a false
RTZ detection. More specifically, an RTZ event beginning
from a non-full step position may result in an abbreviated
integration value potentially interpreted as a stalled pointer.
Advancing the pointer by at least 12 microsteps clockwise (if
PE7 = 0) to the nearest full step position (e.g., 0, 6, 12, 18,
24, etc.) prior to initiating an RTZ ensures the magnetic fields
line up and increases the chances of a successful pointer
stall detection. It is important that the pointer be in a static, or
commanded, position before starting the RTZ event.
Because the time duration and the number of steps the
pointer moves prior to reaching the commanded position can
vary depending upon its status at the time a position change
is communicated, the master should assure sufficient
elapsed time prior to starting an RTZ. If an RTZ is desired
after first enabling the outputs or after forcing a reset of the
device, the pointer should first be commanded to move
12 microsteps clockwise to the nearest full step location.
Because the pointer was in a static position at default, the
master could determine the number of microsteps the device
has taken by monitoring and counting the MOV0. MOV1
device status bit transitions to confirm the pointer is again in
a static position. Alternatively, the user could monitor the
device status bits CMD1 and CMD2.
0
1
2
3
0
0
0
COSINE
SINE
I
MAX
I
COIL
I
COIL
I
MAX
I
MAX
I
MAX
0
1
2
3
0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MCZ33977EG | Single Gauge Driver |
| MCZ33989EG | System Basis Chip with High-Speed CAN Transceiver |
| MCZ33990EF | Enhanced Class B Serial Transceiver |
| MCZ33991EG | Gauge Driver Integrated Circuit |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCZ33976EG | 制造商:Freescale Semiconductor 功能描述:IC STEPPER MOTOR GUAGE DRIVER SPI |
| MCZ33976EG/R2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Dual Gauge Driver with Configurable Response Time |
| MCZ33976EGR2 | 功能描述:功率驅(qū)動器IC CONFIG DUAL GAUGE DR RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MCZ33977EG | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 SINGLE GAUGE DR. LG PTR RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| MCZ33977EG | 制造商:Freescale Semiconductor 功能描述:IC STEPPER MOTOR GAUGE DRIVER SPI |
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