New MCUs come with media middleware
Codecs supported include MP3, AAC, and WMA, and along with a production ready media player, a FAT file system and Bluetooth profiles are also included. The SH726A and SH726B MCUs are equipped with a new bus controller that enables the connection of quad-SPI Flash ROM (serial type), which uses fewer connection pins, as external Flash memory supporting direct data access.
This substantially reduces the number of pins required for connection, while maintaining access speeds equivalent to conventional parallel NOR flash. In addition, on-chip functions optimized for system control and data processing enable the lowest pin count (SH726A: 120-pins) in the entire SH7260 Series.
The SH726A is also available in a version with a package size of 14 × 14 millimetre (mm) and 0.4 mm pin pitch, helping to reduce the board mounting area and overall cost of the system.
The maximum CPU operating frequency of the SH726A and SH726B MCUs is 216MHz, which is 1.5 times that of the existing SH7266 MCUs and the industry’s highest level for audio products, according to Renesas. It enables the implementation of operations such as digital audio signal processing at high speed.
This makes the MCUs suitable for use in products subject to a heavy processing load for sound stage processing, noise cancellation (echo cancelling/noise suppression) for hands-free calls over Bluetooth, in addition to audio playback (decoding of compressed audio).
The SH726B MCUs also implement two USB (Full-Speed) channels on-chip, providing support for the connection of multiple USB devices of various types, including portable audio players and USB storage.
The SH7260 Series supports a range of middleware for digital audio, including: Data decoder middleware for MP3, WMA, AAC, etc; Device middleware for USB, SD, etc; ISO 9660 file system middleware for CD-ROM applications, FAT file system middleware for USB/SD memory. Software development kits (SDKs) incorporating these drivers and middleware for digital audio applications are also available to further reduce the time and resources required for system development.
Renesas says it plans to continue adding new products to the SH7260 Series of MCUs with large-capacity on-chip RAM in a timely manner in response to the evolving market.
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