Disney Frozen 2 Magic Pendant Plush Doll: Difference between revisions

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What child wouldn't love their plush dolls to sing to them, especially the Frozen theme songs.  This is the idea behind the magic-pendent Frozen-II plush dolls.  You can still buy these dolls on [https://www.amazon.co.jp/-/en/Disney-Character-Chatting-Pendant-Frozen/dp/B07YLXVF4C Amazon (Japan)]   
What child wouldn't love their plush dolls to sing to them, especially the Frozen theme songs.  This is the idea behind the magic-pendent Frozen-II plush dolls.  You can still buy these dolls on [https://www.amazon.co.jp/-/en/Disney-Character-Chatting-Pendant-Frozen/dp/B07YLXVF4C Amazon (Japan)]   
[[File:001.Disney Frozen2.Both Dolls.jpg|alt=A view of both Disney Frozen 2 Magic Pendant Plush Dolls|none|thumb|A view of both Disney Frozen 2 Magic Pendant Plush Dolls]]
[[File:001.Disney Frozen2.Both Dolls.jpg|alt=A view of both Disney Frozen 2 Magic Pendant Plush Dolls|none|thumb|A view of both Disney Frozen 2 Magic Pendant Plush Dolls]]
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== General Description ==
== General Description ==

Revision as of 20:01, 6 March 2023

What child wouldn't love their plush dolls to sing to them, especially the Frozen theme songs. This is the idea behind the magic-pendent Frozen-II plush dolls. You can still buy these dolls on Amazon (Japan)

A view of both Disney Frozen 2 Magic Pendant Plush Dolls
A view of both Disney Frozen 2 Magic Pendant Plush Dolls

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General Description

The dolls work on the concept of the pendent containing NFC chip which activates a song playback. The pendant is a simple NFC tag, whilst the plush doll body contains the RF transceiver and playback logic. There is no difference between the Anna or Elsa doll other than what is loaded into the flash eeprom.

NFC Units Teardown
NFC Units Teardown

NFC Unit

The PCB contains two logic IC, one an RF amplifier the other the ARM Cortex-M0 enabled microcontroller playback unit. The MCU unit contains 32K OTP ROM for program code, and a further 8Mb audio flash-rom

Close up of NFC unit
Close up of NFC unit
Active Components
IC Part Description Link
NX11M23A Single-Chip 32-bit MCU with CELP, SBC, ADPCM Coding & 16-ch MIDI Datasheet
NY9A109A Low Frequency RF Amplifier Datasheet