NXP Semiconductors NHS3152DBUL

Overview

NHS3152DBUL from NXP Semiconductors is a therapy adherence resistive monitor IC integrating an Arm Cortex-M0+ processor, NFC/RFID ISO 14443 Type A interface, six-channel analog I/O with flexible on-chip switch matrix, internal temperature sensor (±0.3 °C accuracy in 0–45 °C range), and ultra-low-power operation down to <50 nA in battery-off mode. It supports dual power sources (1.72–3.6 V battery or NFC field) and enables single-layer foil-based pill usage monitoring systems.

For engineers reviewing the NHS3152DBUL datasheet, NHS3152DBUL pinout, NHS3152DBUL application, or NHS3152DBUL equivalent, this page delivers verified technical context for medical adherence system design-covering NFC-powered wake-up, resistive network sensing architecture, memory-mapped peripheral layout, and low-power state transitions critical for implantable or ingestible sensor integration.

Technical Context

The NHS3152DBUL implements a dual-oscillator clock system: an 8 MHz trimmed RC oscillator (2 % accuracy) for system clock generation with programmable dividers (62.5 kHz–8 MHz), and a dedicated 32.768 kHz timer oscillator for RTC and PMU timing. Its power architecture features automatic source selection between VDDBAT and NFC rectified voltage, with priority given to battery when both are present.

Interrupt handling is managed by the Arm Cortex-M0+–integrated NVIC supporting four priority levels and 31 configurable interrupt sources-including GPIO edge/level detection, NFC access events, RTC timer expiry, BOD, and ADC/DAC conversion completion-enabling deterministic wake-up from deep power-down via RESETN, WAKEUP pin, or RF field detection.

Key Specifications

Pinout & Package

HVQFN24 package (SOT616-3): 4 × 4 × 0.85 mm thermal-enhanced no-lead quad flat; 24-terminal layout optimized for high-density medical foil integration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar therapy adherence monitoring applications.

Compared with NHS3152DBUL, NHS3100 reduces BOM cost but sacrifices thermal accuracy and firmware flexibility, while ST25DV64K shifts all intelligence off-chip-making NHS3152DBUL the only single-die solution enabling passive NFC readout, resistive sensing, and embedded computation in one HVQFN24 package.

Availability

NHS3152DBUL is available at Aetrix Electronics and suitable for smart pill bottle monitoring, ingestible adherence tags, single-layer foil medication patches, and multi-dose compliance bandages requiring stable component supply across medical device lifecycle phases.

Supply support for NHS3152DBUL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and healthcare applications, with over 30 years of embedded security IP development.

The NHS3152 product line was designed specifically for ultra-low-power, NFC-enabled therapy adherence systems-targeting regulatory-compliant, foil-integrated medical sensors that require zero-battery-consumption readout and long-term shelf stability.

FAQ

What power sources does the NHS3152DBUL support?

The NHS3152DBUL supports dual power sources: a 1.72–3.6 V external battery connected to VDDBAT, and passive NFC-field power harvested via LA/LB terminals. Its automatic source selector prioritizes battery when both are present and enables seamless switchover. In NHS3152DBUL systems, this allows continuous logging on battery and zero-power data readout via NFC-critical for FDA-cleared adherence devices.

How does the NHS3152DBUL perform resistive network sensing for pill usage?

The NHS3152DBUL uses its six analog I/O pins (AN0_0–AN0_5) connected to a flexible on-chip analog switch matrix, allowing time-division multiplexed measurement of resistive foil segments without external components. Each pin maps to ADC, DAC, or CDC converters; firmware sequences measurements to detect foil breakage patterns. This architecture is validated in NHS3152DBUL reference designs for single-layer foil integration.

Is the NHS3152DBUL NFC Forum certified?

Yes-the NHS3152DBUL holds NFC Forum certification ID 58524 for Type 2 Tag Operation compliant with ISO/IEC 14443 Type A. This certification covers its passive communication protocol, memory access behavior, and RF performance under defined field conditions. Certification applies directly to the NHS3152DBUL variant in HVQFN24 packaging per NXP's official declaration.

What is the temperature accuracy of the NHS3152DBUL's on-die sensor?

The NHS3152DBUL's integrated temperature sensor achieves ±0.3 °C absolute accuracy between 0 °C and +45 °C, ±0.5 °C from −40 °C to 0 °C, and ±0.5 °C from +45 °C to +85 °C. This specification is measured and guaranteed across process/voltage/temperature corners and is used internally to compensate resistive network measurements-ensuring reliable NHS3152DBUL operation in varying environmental conditions.

Can the NHS3152DBUL operate without a battery?

Yes-the NHS3152DBUL can operate entirely from NFC-field power for readout and limited command execution. Its internal rectifier converts RF energy into usable DC voltage, powering the NFC controller, SRAM retention, and basic logic. However, full functionality-including resistive sensing, temperature measurement, and flash writes-requires battery power. NHS3152DBUL's dual-mode design ensures passive readout capability while maintaining active logging integrity.