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參數(shù)資料
| 型號(hào)： | L9950 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | DOOR ACTUATOR DRIVER |
| 中文描述： | 門執(zhí)行器驅(qū)動(dòng) |
| 文件頁數(shù)： | 10/23頁 |
| 文件大小： | 231K |
| 代理商： | L9950 |
L9950
10/23
4
FUNCTIONAL DESCRIPTION OF THE SPI
4.1
This device uses a standard SPI to communicate with a microcontroller. The SPI can be driven by a mi-
crocontroller with its SPI peripheral running in following mode: CPOL = 0 and CPHA = 0.
For this mode, input data is sampled by the low to high transition of the clock CLK, and output data is
changed from the high to low transition of CLK.
This device is not limited to microcontroller with a build-in SPI. Only three CMOS-compatible output pins
and one input pin will be needed to communicate with the device. A fault condition can be detected by
setting CSN to low. If CSN = 0, the DO-pin will reflect the status bit 0 (fault condition) of the device which
is a logical-or of all bits in the status registers 0 and 1. The microcontroller can poll the status of the device
without the need of a full SPI-communication cycle.
Serial Peripheral Interface (SPI)
Note:
In contrast to the SPI-standard the least significant bit (LSB) will be transferred first (see FIGURE 6).
4.2
The input pin is used to select the serial interface of this device. When CSN is high, the output pin (DO)
will be in high impedance state. A low signal will activate the output driver and a serial communication can
be started. The state when CSN is going low until the rising edge of CSN will be called a communication
frame. If the CSN-input pin is driven above 7.5V, the L9950 will go into a test mode. In the test mode the
DO will go from tri-state to active mode.
Chip Select Not (CSN)
I
OLD23
open load detection current of
OUT2, OUT3
15
40
60
mA
I
OLD45
open load detection current of
OUT4 and OUT5
60
150
300
mA
I
OLD6
open load detection current of
OUT6
30
70
150
mA
I
OLD78910
open load detection current of
OUT7, OUT8, OUT9, OUT10
15
40
60
mA
I
OLD11
open load detection current of
OUT11
30
150
300
mA
t
dOL
minimum duration of open load
condition to set the status bit
500
3000
μ
s
t
ISC
minimum duration of over-current
condition to switch off the driver
10
100
μ
s
dV
OUT16
/dt
slew rate of OUT1,OUT6
V
S
=13.5 V
I
load
= ±1.5 A
0.1
0.2
0.4
V/
μ
s
dV
OUT23
/dt,
dV
OUT78910
/dt
slew rate of OUT2/3 and OUT7-
OUT10
V
S
= 13.5 V
I
load
= -0.8 A
0.09
0.2
0.4
V/
μ
s
dV
OUT45
/dt
slew rate of OUT4, OUT5
V
S
= 13.5 V
I
load
= ±3.0 A
0.1
0.2
0.4
V/
μ
s
dV
OUT11
/dt
slew rate of OUT11
V
S
= 13.5 V
I
load
= 3.0 A
0.1
0.2
0.4
V/
μ
s
Table 7. ELECTRICAL CHARACTERISTICS
(continued)
(
V
S
= 8 to 16V, V
CC
= 4.5 to 5.3V, T
j
= - 40 to 150 °C, unless otherwise specified. The voltages are
referred to GND and currents are assumed positive, when the current flows into the pin)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
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| L9950XPTR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 DOOR ACTUATOR DRIVER 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 |
| L9951 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 REAR DOOR ACTUATOR DRIVER 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 |
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