l9733 STMicroelectronics, l9733 Datasheet - Page 19

• Manufacturer Part Number: l9733
• Description: Octal Self Configuring Low/high Side Driver
• Manufacturer: STMicroelectronics

L9733
4.6
4.6.1
4.6.2
Discrete inputs
Output 6-8 enable input (In6, ln7, ln8)
This input allows Output 6 (or Output 7, or Output 8) to be enabled via this external pin
without the use of the SPI. The SPI command and the In6-7 input are logically or'd together.
A logic "1" on this input (In6, ln7 or ln8) will enable this output no matter what the status of
the SPI command register. A logic "0" on this input will disable this output if the SPI
command register is not commanding this output on. This pins (In6, ln7 or ln8) can be left
"open" if the internal output device is being controlled only via the SPI. This input has a
nominal 100kΩ resistor connected from this pin to ground, which will pull this pin to ground if
an open circuit condition occur. This input is ideally suited for non-inductive loads that are
pulse width modulated (PWM'd). This allows PWM control without the use of the SPI inputs.
Reset input (RES)
When this input goes low it resets all the internal registers and switches off all the output
stages. This input has a nominal 100 kΩ resistor connected from this pin to VDD, which will
pull this pin to VDD if an open circuit condition occur.
Functional description
19/33