Reg. versions of Q2686

I heard that there are two versions of Q2686 chip G & H. What is the RAM and flash memory available for the two versions? does Q2686 G have 1 Megabytes of RAM and 4 Megabytes of flash memory that can be used for user application? What is the difference between the two? what is the cost implication between the two series?

S. Vanee