Is it possible to use RN4678APL-V/RM100 in place of RN4678-V/RM100 as a pin-to-pin replacement?

RN4678-V/RM100 and RN4678APL-V/RM100 are physically identical. The footprint and the pin-to-pin assignment should be the same. The difference is the firmware.

RN4678APL-V/RM100 supports Apple® iPod® Accessory Protocol v.2 (iAP2). You can use RN4678APL-V/RM100 but if you encounter any firmware related issues, please keep in mind that you can put the standard (non-Apple) firmware on those modules.

© 2018 Microchip Technology, Inc.
Notice: ARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.