- 您现在的位置：买卖IC网 > PDF目录43901 > L7250 (STMICROELECTRONICS) VOICE COIL MOTOR CONTROLLER, PQFP64 PDF资料下载
参数资料
| 型号： | L7250 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | VOICE COIL MOTOR CONTROLLER, PQFP64 |
| 封装： | TQFP-64 |
| 文件页数： | 3/46页 |
| 文件大小： | 478K |
| 代理商： | L7250 |
第1页第2页当前第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页
11/46
L7250
1
SERIAL PORT
The serial port is a bidirectional three pin interface, using SDATA, SCLK and SEN to address and communicate
with sixteen 8 bit registers in the L7250. These registers include the status register, Spindle control registers,
VCM control registers, sinewave drive registers, and test mode register. These registers are cleared to zero at
power up.
1.1 Default comunication modes setting (bit 7, Reg05H ) = 0
After the SEN falling edge, the internal state machine is waiting for the first SCLK falling edge. This means that
if the SCLK line starts from an high level the first falling edge, respecting the setup time Tefcf, is considered,
and is used to read the R/W bit. During a writing process the internal state machine must see 16 SCLK falling
edges to validate the operation. The write mode is started if the R/W bit is low on the first falling edge of SCLK.
The read mode is started if the R/W bit is high on the first falling edge of SCLK. The ID, Address, and Data are
all then subsequently read by the L7250 on the falling edges of SCLK. (See Figure 1)
The microcontroller has to read the data on the falling edge of the SCLK signal. After the hold time (Tedh) the
data line switches to the next data without a tri-state phase.During a read mode the last address bit is read by
L7250 on the eighth falling edge of SCLK. The internal state machine then turns the SDATA bit around for the
L7250 to assume control at the next SCLK rising edge (the first rising edge after the 8th SCLK falling edge).
SERIAL PORT
Voh
Logic Output voltage high
Ioh=1mA
2.7
V
Vol
Logic Output voltage low
Iol=1mA
0.5
V
Vih
Logic input high
Iih=1uA
2.2
V
Vil
Logic input low
Iil=-1uA
0.5
V
Iih
Logic high input current
Internal Pulldown Resistor
Vin = 3.3V
33
A
Iil
Logic low input current
-1.00
A
ELECTRICAL CHARACTERISTCS (continued)
POWER SUPPLY [VCC5 & VCV] VCC5 = 5V ±10%, VCV = 12V ±10%. Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
相关PDF资料 |
PDF描述 |
|---|---|
| L7980A | 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| L7980 | 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| L7980TR | 3.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO8 |
| L7981ATR | SWITCHING REGULATOR, DSO8 |
| L7981TR | SWITCHING REGULATOR, DSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L7250E1.2 | 功能描述:电源开关 IC - 配电 DSD POWER RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| L7252E2.6 | 功能描述:电源开关 IC - 配电 DSD POWER RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| L725MAG | 制造商:Apex Tool Group 功能描述:TAPE, 1 IN. X 25 FT, 700 SERIES, MAGNETIC END HOOK 制造商:Lufkin 功能描述:TAPE MEASURE, MAGNETIC END HOOK 25FT 1IN; Tape Measure Type:Manual; Measuring Range Max:25ft; Blade Width:1"; Case Color:Orange; Tool Body Material:ABS; Blade Finish:Yellow Clad; Blade Length:25ft ;RoHS Compliant: NA |
| L728 | 制造商:BURNDY 功能描述:L-DIE |
| L7290 | 制造商:CIPS 功能描述:CUTTER OBLIQUE SEMI FLUSH 109MM |
发布紧急采购，3分钟左右您将得到回复。