- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383236 > L6238 (意法半導(dǎo)體) Sensorless Spindle Motor Driver(無傳感器主軸電機(jī)驅(qū)動(dòng)器) PDF資料下載
參數(shù)資料
| 型號(hào)： | L6238 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Sensorless Spindle Motor Driver(無傳感器主軸電機(jī)驅(qū)動(dòng)器) |
| 中文描述： | 傳感器主軸電機(jī)驅(qū)動(dòng)器（無傳感器主軸電機(jī)驅(qū)動(dòng)器） |
| 文件頁數(shù)： | 28/35頁 |
| 文件大小： | 383K |
| 代理商： | L6238 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁當(dāng)前第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁
Figure 30 is the timing diagram for writing to the
serial port. This diagram indicates the typical
waveforms at the serial port and how they relate
to one another when the
PORT DISABLE
pin is
used. Two consecutive write cycles with key tim-
ing parametersare illustrated.
To initiate the write cycle, the
STROBE
and
R/W
signals are first brought low. After a minimum set-
up time, T
os
, the
PORT DISABLE
pin is set low.
The clocking of the data can begin after a mini-
mum settling time, T
settle
has passed. The data is
clocked into the register on the falling edge of the
PORT CLOCK
. After the 16th clock cycle and
wait time T
csw
a strobe signal causes the data to
be transferredto the16-bit latch.
Additional timing parameters that are relevant
concern the timing of the clock signal relative to
the data stream. The time T
ds
is the data set up
Figure30:
Write TimingDiagram.
time, where the data must be stable before the
falling edge of the clock. The Data Hold time, T
dh
,
is the minimum time that the data must be valid
after the rising edge of the clock pulse.
The waveforms associated with reading from the
serialport are similar to the write mode. The main
difference is in the timing of the strobe pulse.
Since there is a single port for both read and
write, the strobe signal, in conjunction with the
R/W signal insures proper data stream flow.
Referring to figure 31, the read mode is initiated
by first asserting the
R/W
line high, while holding
the strobe line low. The
PORT DISABLE
pin is
then brought low. A pulse is now sent to the
strobe pin that transfers the data on the Status
Bus to the Shift Register. The falling edge of the
strobe cannot occur earlier than the minimum set-
tling time, Tsettle. The data is shifted out on the
Figure31:
ReadTiming Diagram.
L6238
28/35
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6239 | 12V Disk Drive Spindle Driver(12V磁盤驅(qū)動(dòng)主軸驅(qū)動(dòng)器) |
| L6242 | VOICE COIL MOTOR DRIVER |
| L6243 | VOICE COIL MOTOR DRIVER |
| L6243D | VOICE COIL MOTOR DRIVER |
| L6243DS | VOICE COIL MOTOR DRIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6238S | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:12V SENSORLESS SPINDLE MOTOR CONTROLLER |
| L6238SQA | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:12V SENSORLESS SPINDLE MOTOR CONTROLLER |
| L6238SQT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:12V SENSORLESS SPINDLE MOTOR CONTROLLER |
| L6239 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| L623C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|280V V(RRM)|46A I(T) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。