L9929XP Просмотр технического описания (PDF) - STMicroelectronics

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L9929XP

SPI CONTROLLED H-BRIDGE

STMicroelectronics 

L9929

Figure 9.

Temperature-depending current-limitation

Maximum rating for junction temperature

Overtemperature switch-off

Switch-off current in case of current limitation

For typical 165°C < Tj < 175°C the maximum current decreases

for < 1s 175°C

> typ. 175°C

typ. 8.6A Tj < typ. 165°C

Imax

typ. 8.6A

Tolerance range of

temperature dependent

current reduction

Range of

Overtemperature

switch-off

typ. 2.5A

165°C

175°C Tj

Table 5. Electrical Characteristics (continued)

Spi Interface

The timing of L9929 is defined as follows:

- The change at output (SO) is forced by the rising edge of the SCK signal.

- The input signal (SI) is taken over on the falling edge of the SCK signal.

- SS = active without any clocks at SCK is not allowed

- The data received during a writing access is taken over into the internal registers on the rising edge of the SS

signal, if exactly 16 SPI clocks have been counted during SS = active.

Figure 10.

10

9

SS

11

2

1

3

8

SCK

SO

SI

12

4

7

tristate

Bit (n-3) Bit (n-4)...1 Bit 0; LSB

56

MSB IN Bit (n-2) Bit (n-3) Bit (n-4)...1 LSB IN

n = 16

7/23

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