Cell-count range and interface
The MC33771BTA1AE monitors 7 to 14 series-connected lithium-ion cells, communicating measurements over an SPI bus to the host controller. Integrated over-voltage and under-voltage fault detection per cell means the controller can flag a cell-level violation without polling each tap individually — the interrupt line asserts on a threshold crossing.
Thermal and package constraints for BOM fit
Surface-mount assembly with a moisture sensitivity level typical of exposed-pad LQFP packages — pre-bake before reflow if the floor life has been exceeded.