Freescale Semiconductor has developed a single-chip device for the S12 MagniV mixed-signal microcontroller (MCU) family. The S12VR64 is designed for use in DC motors for automotive window lift and sunroof applications connected to local interconnect network (LIN) automotive body networks.
The S12VR64 MCU is based on the LL18UHV technology that enables analogue integration on the MCU which enables connection of high-voltage signals and power supplies directly to the MCU in their automotive designs.
The MCU combines the different devices required for relay-driven electric motor control, including the LIN physical layers, voltage regulators and low- and high-side drivers, into one device.
This level of integration is accomplished via the LL18UHV technology, which uses Freescale’s low-leakage 0.18 micron (LL18) fabrication process to integrate 40V analogue, non-volatile memory (NVM) and digital logic on a single piece of silicon.
The S12VR64 mixed-signal MCU is the first device based on LL18UHV technology, and Freescale plans to add products to the S12 MagniV family that offer the right levels of precision and intelligence for a range of motor control and lighting applications in body electronics and other areas of the car.
The S12VR64 in a window lift design.
The S12 MagniV family provides software compatibility and tool reuse with the existing S12 16-bit MCU.
Existing system-in-package (SiP) solutions (MM912F634, MM912G634, MM912H634) combine an S12 MCU and a SMARTMOS analog control IC, fabricated in two separate processes, in a single package. These SiP devices are suitable for customers who need dual-die solutions for applications in which high current is required.
Freescale intends to expand the S12 MagniV family to include a full range of AEC-Q100 qualified products that integrate an MCU, automotive voltage regulators, LIN and CAN physical layers, motor drivers and more in either single-chip or dual-die form, all in single-package solutions. The next parts planned for the S12 MagniV family are single-chip solutions for applications such as brushless DC motor control, LED lighting, stepper motor control, generic LIN slave nodes or a general-purpose MCU combined with high-voltage I/O.
The S12VR64 MCU is included in Freescale’s product longevity program, with assured supply for a minimum of 15 years.
Freescale expects the S12VR64 to achieve automotive AEC-100 qualification by early 2012. Budgetary pricing is $1.65 in 10,000-piece quantities.