Battery Sensor Lead-Acid 30mA 2.5V 48-Pin QFN EP T/R

The MM9Z1_638 is a fully integrated battery monitoring device. The device supports precise current measurement via an external shunt resistor. It features four voltage measurement via an internal calibrated resistor divider or use of an external divider. It includes an internal temperature sensor, allowing close proximity battery temperature measurements, plus four external temperature sensor inputs. The MM9Z1_638 includes LIN 2.2 protocol and physical interface, and an MSCAN protocol controller, for interfacing to automotive buses.

Wide range battery current measurement; 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

Measurement synchronization between voltage channels and current channels

Five external temperature sensor inputs with internal supply for external sensors

Low-power modes with low-current operation

Multiple wake-up sources: LIN, timer, high-voltage input, external CAN interface, and current threshold and integration

Precision internal oscillator and connections for external crystal

LIN 2.2/ 2.1/ 2.0 protocol and physical interface

msCAN protocol controller, and supply capability for 8 and 14-pin CAN interfaces

S12Z MCU with 128 KB Flash, 8.0 KB RAM, 4.0 KB EEPROM