Pin
| Symbol
| Function
|
1
| BSG
| Boost driver ground:
Connect this pin to ground at the low side of an external current sense resistor to
decouple the driver noise from the sensitive ground. If step up pre regulator option
is not used, connect to ground.
|
2
| VST
| Supply voltage standby regulator, input:
Connect this input to supply (battery) voltage with reverse protection diode and
capacitor between pin and ground. An EMC filter is recommended.
|
3
| ENA
| Enable Input:
A positive edge signal at this pin will wake the device. In case of not used connect
to ground.
|
4
| WAK
| Wake/Inhibit Input:
A high level signal of defined length at this pin will wake the device. In case of not
used, connect to ground
|
5
| QST
| Output standby LDO:
Connect a capacitor as close as possible to pin.
|
6
| AG1
| Analogue ground, pin 1:
Connect this pin directly (low ohmic and low inductive) to ground.
|
7
| AG2
| Analogue ground, pin 2:
Connect this pin directly (low ohmic and low inductive) to ground.
|
8
| AGS1
| Analogue ground, safety, pin 1:
Connect this pin directly (low ohmic and low inductive) to ground.
In case a safety switch is used, connect directly to the source of the NMOS used.
|
9
| AGS2
| Analogue ground, safety, pin 2:
Connect this pin directly (low ohmic and low inductive) to ground.
In case a safety switch is used, connect directly to the source of the NMOS used.
|
10
| SS2
| Safe state signal 2:
Safe state output signal 2, sets the application into a safe state. Signal is delayed against SS1, delay can be adjusted via SPI command.
|
11
| SS1
| Safe state signal 1:
Safe state output signal 1, sets the application into a safe state.
|
12
| SDI
| Serial peripheral interface, signal data input:
SPI signalling port, connect to SPI port “data output” of micro processor to receive commands during SPI communication.
|
13
| SDO
| Serial peripheral interface, signal data output:
SPI signalling port, connect to SPI port “data input” of micro processor to send
status information during SPI communication.
|
14
| SCL
| Serial peripheral interface, signal clock:
SPI signalling port, connect to SPI port “clock” of micro processor to clock the
device for SPI communication.
|
15
| SCS
| Serial peripheral interface, signal chip select:
SPI signalling port, connect to SPI port “chip select” of micro processor to address
the device for SPI communication.
|
16
| WDI
| Watchdog input, trigger signal:
Input for trigger signal, connect the “trigger signal output” of the micro processor to
this pin. In case of not used, leave open (internal pull-down).
|
17
| ROT
| Reset output:
Open drain structure with internal pull-up current source. A low signal at this pin indicates a reset event.
|
18
| INT
| Interrupt signal:
Push-pull-stage. A low pulse at this pin indicates an interrupt, the micro processor shall read out the SPI status registers. Connect to a non maskable interrupt port (NMI) of the micro processor core supply volt
|
