L99ASC03 datasheet(8/73 Pages) STMICROELECTRONICS

8 / 73 page

Block diagram and pin descriptions

L99ASC03

8/73

DocID023504 Rev 7

SGND1

Signal ground 1

GND

SDI

SPI Serial data input

SCK

SPI clock input

SDO

SPI Serial data output

CSN

SPI Chip Select Not input

Block Commutation Sync Pin

DIS

Disable input

NRES

NReset output

AOUT

Analog multiplexer output

BEMFOUT

Back EMF output

DOUT

Digital multiplexer output

NINT

Interrupt output

SGND3

Signal ground 3

GND

Reserved

Pin must be kept not connected

Not to be

connected

AGND

Analog ground

GND

VDD

Voltage regulator output

Reserved

Pin must be kept not connected

Not to be

connected

INH

Inhibit input (wake-up)

VSREG

Voltage regulator power supply

Charge pump power supply

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

VSMS

Motor supply sense pin

GH1

Gate of external high-side MOSFET 1

SH1

Source of external high-side MOSFET 1

I/O

GL1

Gate of external low-side MOSFET 1

SL1

Source of external low-side MOSFET 1

I/O

GH2

Gate of external high-side MOSFET 2

SH2

Source of external high-side MOSFET 2

I/O

GL2

Gate of external low-side MOSFET 2

Table 2. Pin definition and function (continued)

Pin number

Symbol

Function

I/O type

L99ASC03 数据表(PDF) 8 Page - STMicroelectronics

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