CellularRAM/PSRAM
What is CellularRAM memory?
CellularRAM memory is a family of pseudo-SRAM (PSRAM) products that are backward compatible with 6T (six-transistor) SRAM and early generation Async or Page PSRAM. CellularRAM offers a complete new set of devices with innovative functionality burst, providing an evolutionary path to pseudo SRAM.
What are the target markets and applications for CellularRAM devices?
CellularRAM products target handsets, but can be used anywhere cache or buffered memory is required.
What are the benefits of CellularRAM technology?
CellularRAM technology's multiple benefits include:
- backward compatibility with standard asynchronous SRAM devices
- DRAM technology with an SRAM interface
- higher densities and performance
- lower cost per bit than current SRAM devices
What are the specific features that distinguish the CellularRAM family from existing SRAM architectures?
6T-SRAM is most commonly used in densities of 2/4/8Mb in cell phone designs. It features 70ns/85ns random cycle times with a bandwidth of ~30 MB/s in a x16 configuration. Active power consumption at 1.8V is 25mA. CellularRAM devices significantly exceed today’s low-power 6T-SRAM in density and bandwidth, while keeping active power consumption at equally low levels. CellularRAM products feature a random cycle time of 70ns at 1.8V, and allow a peak bandwidth of 208 MB/s in burst mode.
What densities and configurations of CellularRAM does Micron offer?
Micron offers 16Mb, 32Mb, 64Mb and 128Mb densities in the Async/Page and Async/Page/Burst configurations. Micron offers all densities of CellularRAM in wafer form as KGD (Known Good Die). In wafer form, Micron also offers the Burst A/D multiplexed configuration.