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MC9S12VR-Family - Data Sheet - Freescale Semiconductor

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Low-Side Drivers - LSDRV (S12LSDRV1)<br />

14.3.4 LSDRV Configuration Register (LSCR)<br />

Module Base + 0x0001 Access: User read/write 1<br />

1 Read: Anytime<br />

Write: Anytime<br />

7 6 5 4 3 2 1 0<br />

R 0 0 0 0<br />

W<br />

<strong>MC9S12VR</strong> <strong>Family</strong> Reference Manual, Rev. 2.8<br />

LSOLE1 LSOLE0 LSE1 LSE0<br />

Reset 0 0 0 0 0 0 0 0<br />

= Unimplemented<br />

Figure 14-3. LSDRV Configuration Register (LSCR)<br />

Table 14-5. LSCR Register Field Descriptions<br />

Field Description<br />

3-2<br />

LSOLEx<br />

1-0<br />

LSEx<br />

LSDRV High-Load Resistance Open-Load Detection Enable<br />

These bits enable the measurement function to detect an open-load condition on the related low-side driver<br />

operating on high-load resistance loads. If the low-side driver is enabled and its gate is not being driven by the<br />

selected source, then the high-load resistance detection circuit is activated when this bit is set to ‘1’.<br />

0 high-load resistance open-load detection is disabled<br />

1 high-load resistance open-load detection is enabled<br />

LSDRV Enable —<br />

These bits control the power supply of the related low-side driver circuit.<br />

0 Low-side driver is in shutdown mode. None of the functionalities is available.<br />

1 Low-side driver is enabled.<br />

NOTE<br />

After enabling the low-side driver (write “1” to LSEx) a settling<br />

time t LS_settling is required before the low-side driver gate is<br />

allowed to be turned on (e.g. by writing LSDRx bits).<br />

414 <strong>Freescale</strong> <strong>Semiconductor</strong>

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