Series One Watt Zeners 64 mbit, low voltage, Serial Flash Memory With 50MHz SPI Bus Interface 4 mbit (256Kb x16) UV EPROM and OTP EPROM 8 mbit 1Mb x8 low voltage UV EPROM and OTP EPROM 64 mbit (4Mbx16, Boot Block) 3V Supply Flash memory 4 mbit (512Kb x8 or 256Kb x16, Boot Block) single supply Flash memory 5V or 3V NVRAM Supervisor for Up to 8 LPSRAMs Serial access Real-Time Clock with alarm