NBP9 Datasheet | NXP Semiconductors

description The NBPx family consists of small QFN (4 mm x 4 mm x 1.98 mm), fully integrated battery pressure monitoring sensors (BPMS). The NBPx BPMS solution integrates an 8bit central processing unit (CPU) and NXP-provided firmware to create the ready-to-use pressure sensor. The battery pressure monitoring sensors have a built in MCU and are capable of sensing the pressure change, making a configuration-based decision, and acting on this decision while providing this information to the host system. 2 Features and benefits - Wide operating pressure range 40 - 250 k Pa - Transducer measurement interfaces with low-power AFE: - 10-bit pensated pressure sense element - 8-bit pensated internal device temperature measurement - 8-bit pensated internal device voltage measurement - 12-entry pressure FIFO - Selectable host wake-up indications: - fixed pressure threshold - relative pressure threshold - pressure rate of change threshold ΔP/ΔT - Interfaces: - Client SPI to support host access to internal peripherals, registers, and memory - PWM Output available for ease of integration implementation - User-selectable sampling interval - Low-voltage detection - Qualified in pliance with AEC-Q100, Rev. H 3 Operations 3.1 munication between the NBPx and external host Figure 1 shows an example block diagram of the NBPx interfaced with an external host. Table 1 shows the pin descriptions for the NBPx. NXP Semiconductors NBPx Battery pressure monitor sensor NBP9 Sensor Power Supply PTB1 - output PS ENABLE External host PTA0 - input PTA1 - input PTA2 - output PTA3 - input PTB0 - output PTA4 -...