Support for ATmega406

Hi Rolf,
It is been a while. And three differnt jobs from my end.

Is it possible to add support for the ATmega406 IC?
It is a Battery Management IC.

I'm looking for an advanced battery charger/monitor to replace a TI chip set in an existing product.
Basic requirements:
- Handle 4 * Lithium cells in series.
- Temperature sensing
- Cell balancing
- Emulate the TI I2C protocol.
- Single-wire bootloader

Desirable project additions
- MBus emulation
- CanOpen Support
- Data logging with timedate stamp etc.

Kind regards,
Neil Wrightson