L6360 datasheet(32/65 Pages) STMICROELECTRONICS

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Device configuration

L6360

32/65

Doc ID 022817 Rev 2

In order to reduce the risk of damage to the output stage (e.g. switching from push-pull

inductive load to any transceiver configuration while an inductive load has some residual

energy), the user must not switch between any two “active” (low-side, high-side, push-pull,

low-side ON, high-side ON, push-pull inductive load) configurations of the bridge.

For example, if the microcontroller needs to switch from push-pull to high-side configuration,

it needs to modify the configuration register twice:

First-step: switch from push-pull to OFF (or TRISTATE)

Second-step: switch from OFF (or TRISTATE) to high-side

If the microcontroller asks for a forbidden jump between configurations, the IC remains in

the previous configuration and reports a parity error to the microcontroller.

In case of sequential write, no parity error is generated if the microcontroller rewrites the

configuration register with the previous value; if the operation, instead, requires a forbidden

jump, all data are rejected also for other registers (and a parity error is raised).

The L+ switch is a high-side switch. HS is ON when ENL+ is high, otherwise it is OFF. Fast

decay with active clamp (-Vdemag) is operated when the HS is turned off or in the case of

cutoff.

Receiver I/Q is always ON.

Bit 4:2 = not used

Bit 1:0 = not used

LED registers

See also the Diagnostic LED sequence generator and driver section.

These registers are used to configure the two LED drivers integrated in the IC. Each LED

driver has two associated registers and turns on or off the external LED according to the

information stored in the registers, which are scanned with a rate of 63 ms per bit. LED

drivers can be used for status or diagnostic information, or for other purposes, and should

be configured by the host microcontroller.

LED1 registers

Reset value: [00000000]

Figure 16.

LED1 registers

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