L9959S datasheet(10/43 Pages) STMICROELECTRONICS

10 / 43 page

Pins description

L9959S, L9959T

10/43

DocID023416 Rev 6

SCK1

Serial clock input:

This input controls the internal shift register of the SPI.

SCK1 belongs to chip 1 and SCK2 to chip 2.

SCK2

SI1

Slave in (Serial data input):

The input receives serial data from the microcontroller.

SI1 belongs to chip 1 and SI2 to chip 2.

SI2

SO1

Slave Out (Serial data output):

The diagnosis data is available via the SPI through this tristate-output.

SO1 belongs to chip 1 and SO2 to chip 2.

SO2

SS1

Slave Select input:

The serial data transfer between the device and the micro controller is enabled by pulling

the input SS to low level.

SS1 belongs to chip 1 and SS2 to chip 2.

SS2

AGND(4)

Exposed PAD: connected to AGND

Pins 13 and 14 are referred to die2 , whereas pins 31 and 32 are referred to die1.

Pins 1 is referred to die1 , whereas 19 is referred to die2.

Pins 12 is referred to die2 , whereas 30 is referred to die1.

Pins 10 is referred to die1 , whereas 28 is referred to die2.

Table 3. L9959T (Two H-Bridge drivers in one package) pinout (continued)

Symbol

Function

L9959S 데이터시트(PDF) 10 Page - STMicroelectronics