L9924TR datasheet(13/85 Pages) STMICROELECTRONICS

13 / 85 page

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L9924

Pin description

VDDA

Analog power supply (connect to 100nF//1uF for decoupling)

VSSA

Analog ground

CSA_IN

Current sense ampl. Input

SENSE

Battery sensing with dedicated wire

A+ /B+

Battery sense / Device power supply

IGNIT

Ignition terminal

DFM

Field Monitor (PWM signal going to ECU)

LIN/BSS

LIN / BSS (coming from ECU)

AUX_IN

Auxiliary input

Phase sense input

PH_OUT

Filtered Phase signal

Key sensing and Warning Lamp terminal output

GND

Regulator ground

N°

Function

GLS

Gate driver of ext Low Side MOS used for Lamp

LHC

Key sensing and Warning Lamp terminal output in case of ext MOS

used for lamp driving

GHS

Gate driver of ext High Side MOS used for Relay

Field activity monitor (for High side and low side configuration)

SOURCE

External MOS Source

DRAIN

External MOS Drain

GATE

External MOS Gate

C-Terminal / PCM (PWM signal input coming from ECU)

CP1-

Charge pump pin for capacitor 1, negative side

CP1+

Charge pump pin for capacitor 1, positive side

CP2-

Charge pump pin for capacitor 2, negative side

CP2+

Charge pump pin for capacitor 2, positive side

Charge pump output

PROT_SEL

Protocol selection

VDD_CAP

5V capacitor(5V regulator output)

nRST_SP

Reset (Smart Power)

LIN_RX_SP

LIN receiver (smart power output)

LIN_TX_SP

LIN transmitter (smart power input)

PD1/SWIM/GPIO3

Single Wire Interface Module (for µC programming)

General purpose Input/output (PD1)

Table 2. Pin function (continued)

N°

Pin name

Function

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