The SST34HF162C/164C ComboMemory devices integrate a 1M x16 CMOS flash memory bank with either 128K x16 or 256K x16 CMOS SRAM memory bank in a multichip package (MCP). These devices are fabricated using SST's proprietary, high-performance 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 SST34HF162C/164C devices are ideal for applications such as cellular phones, GPS devices, PDAs, and other portable electronic devices in a low power and small form factor system.