hi,
It is not a matter of the current discussion, but I just wish to say that I have found a secret area over Atmel site and found next chip there:

AT89S4D12 - 8-Bit Microcontroller with 132K Bytes Flash Data Memory

• Compatible with MCS-51™ Products
• 128K Bytes of In-System Reprogrammable Flash data memory and 4K Bytes of Downloadable Flash Program Memory
– Endurance: 1,000 Write/Erase Cycles per Sector
– Data Retention: 10 Years
• Sector Programming: 128 Bytes/Sector
• Single 3.3V ± 10% Supply
• On-Chip 12 MHz oscillator
• Two-Level Program Memory Lock
• 256-Bytes Internal RAM
• 5 Programmable I/O Lines
• Serial Peripheral Interface (SPI) Channel
• Serial Program Downloading
• Dual Data Pointer Registers


Have anybody took this device in hands?

Regards,
Oleg