1.Overview of DDR SDRAM
DDR SDRAM,a type of dynamic RAM,requires regular refreshing but offers large capacity and low cost.On the other hand,SRAM,despite not requiring refreshing and boasting extremely fast speed,is several times more expensive for the same capacity.Therefore,in most medium-speed scenarios that require large-capacity caching and are sensitive to power consumption,JSC low-power DDR SDRAM becomes a practical choice.JSC low-power DDR SDRAM EMD28164PCH-60,directly supplied by Insigma Microelectronics in stock,has been applied in multiple domestic industrial and consumer solutions.
2.Features of JSC low-power DDR SDRAM EMD28164PCH-60
Traditional SDRAM transmits data only once at the rising edge of the clock,whereas DDR SDRAM transmits data once at both the rising and falling edges,doubling the bandwidth directly.Taking this EMD28164PCH-60 as an example,its internal I/O register is actually 16-bit wide,but it appears as x16-bit wide externally-outputting 8 bits at the rising edge of the clock and another 8 bits at the falling edge,achieving continuous throughput without idle time.At the same time,to support this high-speed switching,the chip adopts the SSTL_18 interface standard(1.8V),which provides better signal integrity than the earlier SSTL_2 standard.
3.JSC low-power DDR SDRAM EMD28164PCH-60 parameter characteristics
This JSC chip belongs to the Low Power DDR SDRAM series,with a storage capacity of 128Mbit,a bit width of x16,and an internal configuration of 4 banks.Its operating voltage is only 1.8V,which significantly reduces power consumption compared to the earlier DDR standard of 2.5V.The DDR SDRAM package adopts an 8x9mm 60-ball FPBGA,occupying very little PCB space.The frequency reaches 166MHz,corresponding to a DDR transmission rate of approximately 333Mbps/pin,and it falls within the commercial temperature range(0℃to 70℃),making it suitable for scenarios such as set-top boxes,smart meters,and audio processors.
In addition to basic parameters,the 4Bank structure of EMD28164PCH-60 effectively reduces page conflicts and enhances random access efficiency.Inshang Microelectronics provides direct supply from stock,with short delivery times for samples and small to medium batches,making it ideal for R&D debugging and trial production.If your project is seeking an alternative or cost-saving solution,this DDR SDRAM chip is worth testing on the board.
Keywords:DDR SDRAM
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