1 General description

The NBP9 family is a fully integrated battery pressure monitoring sensor (BPMS). The NBP9 BPMS solution

integrates an 8-bit central processing unit (CPU) running on factory-embedded firmware with serial data and

PWM output interfaces to create the ready-to-use battery pressure monitor sensor.

The NBP9 includes unique autonomous features such as periodic data management with host notification,

pressure change detection with host wake up, and self-test.

The NBP9 is packaged in a small 4 mm x 4 mm x 1.98 mm wettable-flank QFN, and is qualified to AEC-Q100

grade 1 and MSL 3 classifications.

2 Features and benefits

? Transducer measurement interfaces with low-power AFE:

– 10-bit compensated pressure sense element

– 8-bit compensated internal device temperature measurement

– 8-bit compensated internal device voltage measurement

? 12-entry pressure FIFO

? Selectable host wake-up indications:

– fixed pressure threshold

– relative pressure threshold

– pressure rate of change threshold

? Client SPI to support host access to internal peripherals, registers, and memory

? Generation of PWM signal encoding error status and pressure measurement

? Qualified in compliance with AEC-Q100, Rev. H

? User-selectable sampling interval

? Low-voltage detection