The ZWIR4512 enables secure low-power wireless IPv6 communication for sensors and small devices. Renesas provides a user-programmable, royalty-free 6LoWPAN stack with mesh routing capability with the ZWIR4512. 6LoWPAN is an Internet Engineering Task Force (IETF) standard to build wireless, low-power IP-based sensor and device networks. These networks can easily be integrated into existing information technology infrastructure or can operate autonomously. Secure communication is provided by standard-compliant implementations of the Internet Protocol Security (IPsec) protocol suite and the Internet Key Exchange Protocol version 2 (IKEv2), which enable highly secure end-to-end communication, including over unsecure network nodes. The module is powered by an Arm® Cortex™ M3 (trademark of Arm Ltd.) microcontroller and provides a rich set of GPIO and peripheral interfaces. Up to 192kB of flash memory and 32kB of RAM are available for the user application. Different low-power modes are provided to save energy in battery-operated devices. The modules provide superior radio properties without the need for complicated external RF design.


  • Several 5V tolerant I/Os available
  • Low current consumption: 3.7μA Standby Mode, 13.5mA Receive Mode, 18.5mA Transmit Mode at 0 dBm
  • Two modulation schemes: BPSK (20kBps EU, 40kBps US) and O-QPSK (100kBps EU, 250kBps US)
  • Receiver sensitivity: up to -110dBm
  • TX output power: up to 10dBm
  • ETSI/FCC compliant
  • Serial command interface with built-in security and over-the-air update functionality
  • Royalty-free library bundle of custom firmware
  • 6LoWPAN communication library with mesh routing capability
  • IPsec & IKEv2 security libraries
  • Over-the-air update library
  • Several peripheral libraries


PDF 1022 KB Datasheet
PDF 1.07 MB End Of Life Notice
7Z 1.21 MB Guide
PDF 160 KB End Of Life Notice
PDF 522 KB Datasheet - Short-form
PDF 890 KB Schematic
PDF 712 KB Application Note
PDF 490 KB Technical Brief
PDF 342 KB Technical Brief
PDF 889 KB Technical Brief
PDF 271 KB Application Note
PDF 395 KB Application Note
PDF 856 KB Application Note
PDF 456 KB Application Note
PDF 1.46 MB Manual - Development Tools
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PDF 1.07 MB End Of Life Notice
PDF 160 KB End Of Life Notice
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