4 Mbit SRAM in a 48-ball BGA — what the 70 ns access means for the bus
The Infineon CY62147DV30L-70BVI is a 4 Mbit MoBL® asynchronous SRAM organized as 256K x 16, in a 48-ball VFBGA package. It runs on a 2.2 V supply and delivers a 70 ns access time — that is the window the processor waits for data after asserting the address. For a 16-bit microcontroller or DSP bus running at moderate clock rates, 70 ns gives you a comfortable timing margin without needing a wait state. The parallel interface is straightforward: address, data, chip enable, write enable, output enable — no clock, no refresh cycle. The industrial temperature range (-40°C to 85°C) covers factory-floor gear, outdoor telecom cabinets, and engine-bay electronics that see thermal cycling. This is a drop-in SRAM for designs that need a reliable, low-power data buffer without the complexity of DRAM or the endurance limits of Flash.
70 ns vs 10 ns — when the speed difference actually matters
The CY62147DV30L-70BVI runs at 70 ns access time. The functionally similar CY7C1041GN30-10BVXI also is a 4 Mbit, 256K x 16, 2.2 V SRAM but with a 10 ns access time.
Sourcing and RFQ posture
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