Battery sensor combines MCU and CAN protocol module

The MM9Z1J638 combines a three-channel analogue measurement front end, a 16/32bit MCU and a CAN protocol module in a single package. It also packs 128K Flash, 8K RAM and 4K EEPROM. Designed to support both conventional and emerging battery chemistries for automotive and industrial applications, the battery sensor is able to measure key battery parameters for monitoring state of health, state of charge and state of function. A flexible, four-cell front end architecture supports conventional 12V lead acid batteries, as well as emerging battery applications – including 14V stacked cell Li-ion, high voltage junction boxes and 24V truck batteries. James Bates, senior vp of Freescale's Analogue & Sensors group, said: "The MM9Z1J638 will help automakers cope with increasing algorithm complexity and data communication demands as cars become more connected and intelligent. "Also featuring integrated functional safety support, the new battery sensor helps to support vehicle reliability even as automotive electrical system complexities increase."