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→Models: fix link
== Models ==
== Models ==
The original DSi DWM-W015 module features two wireless chips; a Mitsumi MM3218 for DS compatibility and a more modern Atheros AR6002G BGA which share the antenna through an RF switch. It also features 1Mbit of SPI EEPROM ([[ST M45PE10|Media:STM45PE10.pdf]]) for NVRAM. It has enough space to store a full copy of the old DS firmware.
The original DSi DWM-W015 module features two wireless chips; a Mitsumi MM3218 for DS compatibility and a more modern Atheros AR6002G BGA which share the antenna through an RF switch. It also features 1Mbit of SPI EEPROM ([[Media:STM45PE10.pdf|ST M45PE10]]) for NVRAM. It has enough space to store a full copy of the old DS firmware.
The updated DWM-W015A module uses a tiny "5A32" chip as NVRAM (UDFN/XSON, as opposed to the SOIC-sized chip in the older revision). Only the first and last few memory blocks are actually backed by a nonvolatile memory, other addresses return garbage.
The updated DWM-W015A module uses a tiny "5A32" chip as NVRAM (UDFN/XSON, as opposed to the SOIC-sized chip in the older revision). Only the first and last few memory blocks are actually backed by a nonvolatile memory, other addresses return garbage.