Freescale's MM9Z1_638 Intelligent Battery Sensor is a fully integrated intelligent battery monitoring system with CAN and LIN that supports precise current measurement via an external shunt resistor. It features four voltage measurements via internal calibrated resistor dividers or external dividers. It includes an internal temperature sensor, allowing close proximity battery temperature measurements, plus five external temperature sensor inputs. These sensors feature the LIN 2.2 protocol and physical interface, as well as an msCAN protocol controller, for interfacing to automotive buses. The MM9Z1_638 is able to supply and control external CAN interfaces.