L9960 datasheet(34/95 Pages) STMICROELECTRONICS

Part #	L9960

Description	Automotive Single/Dual H-Bridge, SPI programmable DC Brushed Motor Driver

PDF	95 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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34 / 95 page

Functional description

L9960, L9960T

34/95

DS11115 Rev 10

Figure 15. Bridge STATE diagram in VVL mode

Programming the bridge in normal or VVL mode is performed through dedicated SPI

command to setup the MODE configuration bit:

Note:

(-) available in the D10 bit position in SPI command frame 5.

The status of the VVL is echoed through a SPI configuration request

Note:

(-) available in the R11 bit position in SPI answer frame 7c.

In VVL mode, once PWM is set to LOW, the bridge is put in tri-state after a programmable

time “Tvvl” from 0us to 26ms by the register defined below.

Table 33. VVL_MODE

Bit status

Description

Condition

No VVL mode

Reset value

VVL mode

PWM

Forward

Free

Wheeling

Forward

DIR

BRIDGE

STATE

DIS

NDIS

Reverse

Tri

state

Free

Wheeling

Tri

state

Tvvl

GAPGPS02321

Table 34. VVL_MODE echo

Bit status

Description

Condition

No VVL mode

Reset value

VVL mode

Table 35. TVVL[3:0] (µs)

4 bits combination

Description

Condition

0000

Not to be used

if IN1/IN2

interface is

selected

0001

6.4

0010

12.6

0011

24.8

0100

50.4

0101

100

0110

200

0111

400

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