NHS52S04: Ultra-Low-Power Bluetooth® Low Energy Solution With Arm® Cortex®-M33 TrustZone® for Medical IoT

NHS52S04

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Block Diagram

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NHS52S04

NHS52Sx4 Block Diagram

NHS52S04 with 3 V Lithium Cell

NHS52Sx4 with 3 V Lithium Cell

NHS52S04 with PMIC

NHS52S04 with PMIC Block Diagram

Features

Application Processor

  • Arm® Cortex®–M33F with TrustZone® running up to 32 MHz
  • 1 MB flash memory
  • 128 KB RAM
  • 256 KB ROM
  • 16 KB data RAM and 512 bytes sequencer RAM

Boot Modes

  • Autonomous boot from flash
  • In-system programming (ISP)
  • Secure bootloader

General

  • WLCSP package: < 6.56 mm2 with 37 bumps
  • QFN package: 5mm x 5mm with 40 pins
  • Low number of external passive components
  • Operating temperature: -40 °C to +85 °C

Interfaces

  • 3 FlexComm interfaces. Each FlexComm interface can be selected by software to be a USART, SPI, or I2C interface
  • SPIFI with XIP feature uses up to four data lines to access off-chip SPI/DSPI/QSPI flash memory
  • Up to 23 GPIOs

Power Modes

  • NHS52S04
    • High-voltage supply mode (HV_SM) for 3 V battery support using integrated buck DC-DC converter
    • External regulated supply mode (XR_SM) for PMIC support (bypassing the integrated DC-DC converter)

Power Management

  • Lithium ion coin cell
  • External PMIC support

RF

  • A 2.4 GHz RF transceiver supporting Bluetooth Low Energy 5.3
  • Sensitivity -92 dBm in Bluetooth Low Energy 2 Mbps
  • Sensitivity -95 dBm in Bluetooth Low Energy 1 Mbps
  • Sensitivity -98 dBm in Bluetooth Low Energy 500 kbps
  • Sensitivity -100 dBm in Bluetooth Low Energy 125 kbps
  • Flexible RF transmitter level configurability:
    • TX mode 1 (TXM1): Range from -20 dBm to +0 dBm when VDD_RF exceeds 1.1 V
    • TX mode 2 (TXM2): Range from -14 dBm to +6 dBm when VDD_RF exceeds 1.7 V

Security

  • AES-256 encryption/decryption engine with PUF keys
  • Secure hash algorithm (SHA1 and SHA2-256)
  • PUF silicon fingerprint
  • PRINCE encryption module
  • Secure GPIO

Timers

  • 32-bit real-time clock (RTC) with 1 s resolution running in the always-on power domain
  • Additional timer in the RTC can be used for wake up from all low power modes with 1 ms resolution

Product Longevity Program

Comparison Table

Characteristics QN908x NHS52S04
Processor M4F @ 32 MHz M33F with TrustZone @ 32 MHz
Memory ROM 256 KB ROM 256 KB
RAM 128 KB RAM 128 KB
NVM 512 KB NVM 1024 KB
BLE TX up to +2 dBm up to +6 dBm
BLE RX N. A. (BLE 125 kbps) -100 dBm (BLE 125 kbps)
N. A. (BLE 500 kbps) -98 dBm (BLE 500 kbps)
-95 dBm (BLE 1 Mbps) -95 dBm (BLE 1 Mbps)
-92 dBm (BLE 2 Mbps) -92 dBm (BLE 2 Mbps)
Interfaces 35 GPIOs / 4 Flexcomms / SPIFI / USB / ADC / DAC 23 GPIOs / 3 Flexcomms / SPIFI
Security TRNG, AES-128 TRNG, AES-256, RSA-4096, ECC P384, SHA-2
Secure Boot, Debug Authentication and Secure GPIOs
PUF (Physical Unclonable Function)
PRINCE (Flash encryption)
PFR (Protected Flash Regions)
Supply Range 1.8 V ~ 3.6 V 1.8 V ~ 3.6 V
Battery Management Integrated Buck Integrated Buck
Package 6 x 6 mm HVQFN48 5 x 5 mm HVQFN40
3.2 x 3.2 mm WLCSP 2.63 x 2.495 mm WLCSP
Low Power mode 2.8 µA 3.0 µA
(32-kHz OSC on / 64 KB RAM ) (32-kHz OSC on / 64 KB RAM )
Power-off mode N.A. 80 nA
Radio mA
No DCDC
10.3 mA @ 1.3 V RX @ 2 Mbps
7.1 mA @ 1.3 V TX @ 0 dBm
6.7 mA @ 1.1 V RX @ 2 Mbps
8.5 mA @ 1.1 V TX @ 0 dBm
Radio mA
3 V with Buck
5.0 mA @ 3 V RX @ 2 Mbps
3.5 mA @ 3 V TX @ 0 dBm
3.9 mA @ 3 V RX @ 2 Mbps
5.2 mA @ 3 V TX @ 0 dBm

Documentation

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Design Resources

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Hardware

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Software

2 software files

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