S12ZVM32 GDU external bootstrap diode

[zoujiahao]

Hello! Is S12ZVM32 GDU external bootstrap diode not needed? If so, how to connect the VBSx and VLSx pins?

[iggi]

Hi,

as per the S12ZVM device guide, the diode is required in case the device has GDU V4 or V6. The GDUV5 module has on chip bootstrap diode. Refer to Table 1-3. S12ZVM Module Version in the S12ZVM reference manual Rev2.5

MC9S12ZVMRM: MC9S12ZVM-Family Reference Manual and Datasheet

Regards,

iggi

Refer to device overview for maskset / GDU version info.

[zoujiahao]

Hello iggi! Thanks!