mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 401

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

13.2
Table 13-2
13.2.1
Outputs of the two high-side drivers are intended to drive LEDs or resistive loads.
13.2.2
Common high power supply for both high-side driver pins. This pin is set for high voltage power supply.
This pin must be connected to the main power supply source, also connected to VSUP, with the appropriate
guard on board (like for example protection diodes).
13.2.3
Due to the low ohmic connection requirement of ESD clamp one VSS pin is needed to stay near high side
driver to achieve the best performance of ESD protection.
So here VSSXHS pin is used to make the ground connection for high side driver as low ohmic as possible.
13.3
This section provides a detailed description of all registers accessible in the HSDRV module.
13.3.1
A summary of registers associated with the HSDRV module is shown in
of the registers and bits are given in the following sections.
Freescale Semiconductor
External Signal Description
Memory Map and Register Definition
shows the external pins of associated with the HSDRV module.
HS0, HS1— High Side Driver Pins
VSUPHS — High Side Driver Power Pin
VSSXHS — High Side Driver Ground Pin
Module Memory Map
VSUPHS
Name
HS0
HS1
MC9S12VR Family Reference Manual, Rev. 2.2
Preliminary - Subject to Change Without Notice
Table 13-2. HSDRV Signal Properties
High-side driver output 0
High-side driver output 1
High Voltage Power Supply for both
high side drivers
Function
Table
High-Side Drivers - HSDRV (S12HSDRV1)
disabled (off)
disabled (off)
disabled (off)
Reset State
13-3. Detailed descriptions
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