The SST34HF1681 ComboMemory devices integrate a 1M x16 CMOS flash memory bank with a 512K x16 CMOS SRAM memory bank in a Multi-Chip Package (MCP). These devices are fabricated using SST's proprietary, highperformance CMOS SuperFlash technology incorporating the split-gate cell design and thick oxide tunneling injector to attain better reliability and manufacturability compared with alternate approaches. The SST34HF1681 devices are ideal for applications such as cellular phones, GPSs, PDAs and other portable electronic devices in a low power and small form factor system.