The MC9328MX21S (i.MX21S) is backward-compatible to the MC9328M21 (i.MX21). Therefore, the i.MX21 ADS (Application Development System) can be used for i.MX21S hardware and software development.
Using the M9328MX21ADS for i.MX21S Development
The MC9328MX21S (i.MX21S) is backward-compatible to the MC9328M21 (i.MX21). Therefore, the i.MX21 ADS (Application Development System) can be used for i.MX21S hardware and software development.