Intelligent Battery Sensor

The design features a wide range battery current measurement with on-chip temperature measurement, four battery voltage measurements with internal resistor dividers, and up to five direct voltage measurements for use with an external resistor divider. It also has a measurement synchronization between voltage and current channels. This design contains five external temperature sensor inputs with internal supply for external sensors, and low-power modes with low-current operation. It also have multiple wake-up sources; LIN, timer, high-voltage input, external CAN interface, and current threshold and integration. Moreover, M9Z1_638 features precision internal oscillator and connections for external crystal, LIN2.2/2.1/ 2.0 protocol and physical interface, msCAN protocol controller, and supply capability for 8 and 14 pin CAN interfaces. The design has also S12Z microcontroller with 96/128 kByte Flash, 8.0 kByte RAM, 4.0 kByte EEPROM.

The MM9Z1_638 has many useful applications including 12V lead-acid battery monitoring, multi-cell battery (Li-Ion) monitoring, HV battery pack sensor and truck battery monitoring.