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L9301 データシート(PDF) 13 Page - STMicroelectronics

部品番号 L9301
部品情報  Automotive octal low side driver or quad low side plus quad high side driver
PDF  51 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9301 データシート(HTML) 13 Page - STMicroelectronics

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L9301
Discrete inputs
50
5
Discrete inputs
5.1
Output enable EN
The EN pin is the general output enable which allows the μC to immediately switch off the
output in case of need. Output driving is allowed only if this pin is driven to high level. The
device configuration can be changed only with EN pin driven to low level.
An internal pull down is present on the pin.
5.2
Output enable input IN1 to IN8
These inputs allow the outputs, depending on the configuration selected, to be enabled
without the use of the SPI. The SPI command and the IN1-8 input are logically OR'd
together.
A logic ‘1’ on this input will enable the correspondent output no matter what the status of the
SPI command register is. A logic ‘0’ on this input will disable this output if the SPI command
register is not commanding this output on. These pins can be left ‘open’ if the internal power
stages are controlled only via the SPI. This input has a nominal 100 kΩ pull down resistor to
GND, which will pull this pin to ground if an open circuit condition occurs. This input is ideally
suited for loads that are pulse width modulated (PWM'd). This allows PWM control without
the use of the SPI inputs.
Table 10. Output enable input IN1 to IN8
EN
RESET
INx
OUTx/DRNx/SRCx
X
0
X
OFF
0
X
X
OFF
1
1
0
OFF
11
1
ON



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