DB3818 Rev 1

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L9370

Block diagram and pin description

13

37

GH1_A

Gate connection of the H-Bridge High-side NFET for wheel

brake actuator A

O

38

CSIN1M_A

Negative input signal of the external shunt #1 connected to CSA

for stage A

I

39

CSIN1P_A

Positive input signal of the external shunt #1 connected to CSA

for stage A

I

40

GIO0

Programmable Input / Output for Button Interface control

I/O

41

GIO1

Programmable Input / Output for Button Interface control

I/O

42

GIO2

Programmable Input / Output for Button Interface control

I/O

43

GIO3

Programmable Input / Output for Button Interface control

I/O

44

RVPG

Gate driver output for reverse voltage switch control

O

45

AGND

Analog reference ground connection

GND

46

VANALOG

L9370 generated Low noise analog voltage, supplies the

internal current measurement path. (It can be used to supply

external circuits with low current consumption. External

capacitor required for stabilization.)

O

47

RST (EN_EL)

EN_EL: digital enable input for GPIO (default pin function).

RST: High active Input Reset pin. (Enabled via dedicated SPI

bit. GPIO block can be enabled and configured independently)

I

48

WAU

Wake-up input. (digital input, low level active to enter Sleep

Mode)

I

49

VIO

3.3 V / 5 V compatible supply voltage for L9370 output buffers

I

50

SYS_WAKE/MSSUC_B

SYS WAKE (default configuration at start-up) is a digital output

pin to wake System basis chip (SBC) up as support for general

diagnostics on the external button during Sleep Mode only. This

function/pin needs the SYS_WAKE_IN as companion function

to work properly. MSSUC_B is disabled due to pin sharing with

GPIO block.

In case the SYS_WAKE function is not requested by

application, It can be disabled via SPI at 1st start-up and the pin

can be configured as:

MSSUC_B = Motor speed sensor signal output to the μC. (MSS

interface is disabled by default and its functionality is shared

with Lamp driver HSOUT).

O

51

HSOUT1

HSOUT1 = SPI programmable HS/LS current source for

external bulb lamp or LED array with monitoring

O

52

HSOUT0/MSSUC_A

HSOUT0 = SPI programmable HS/LS current source for

external bulb lamp or LED array with monitoring

MSSUC_A = Motor speed sensor signal output to the μC. MSS

interface is disabled by default.

O

53

GIO8

Programmable Input / Output for Button Interface control

I/O

Table 2. Pin definition and brief function description (continued)

Pin #

Symbol

Function

I/O type