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71V256SA15PZG
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Product Detailed Parameters
- Description：IC SRAM 256KBIT PARALLEL 28TSOP
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tube
- Memory Type：Volatile
- Memory Format：SRAM
- Technology：SRAM - Asynchronous
- Memory Size：256Kbit
- Memory Organization：32K x 8
- Memory Interface：Parallel
- Clock Frequency：-
- Write Cycle Time - Word, Page：15ns
- Voltage - Supply：3V ~ 3.6V
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-TSSOP (0.465", 11.80mm Width)
- Supplier Device Package：28-TSOP
- Access Time：15 ns
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Overview
The 71V256SA15PZG is a 3.3V CMOS asynchronous static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It provides a storage capacity of 256Kb, organized as 32K words by 8 bits. The device features a parallel interface with a maximum access time of 15 ns. It operates within a supply voltage range of 3V to 3.6V and supports a commercial temperature range of 0°C to 70°C. The component is housed in a 28-pin Thin Shrink Small Outline Package (TSOP).
Feature Summary
- Fully static asynchronous circuitry requiring no clocks or refresh cycles for operation.
- Low standby power consumption ensures extended battery life when the chip select is at CMOS level.
- LVTTL-compatible inputs and outputs allow direct interfacing with standard logic families.
Applications
- High-performance processor secondary cache systems.
- Embedded systems requiring fast, non-volatile-free data storage.
- Industrial control units operating within commercial temperature limits.
Procurement Notes
Verify the specific suffix PZG against official Renesas documentation to confirm the 28-TSOP package and commercial temperature grade. Confirm RoHS compliance status as legacy variants may differ. Check current product lifecycle status, as this model is listed as obsolete in multiple distributor records. Ensure the ordering part number matches the exact speed grade and pin configuration required for the target design.
Selection Notes
Select this component when a 15 ns access time is sufficient for the system clock requirements. Choose the TSOP-28 package if board space constraints favor surface-mount thin profiles over SOJ options. Verify that the 3.3V supply rail aligns with the system's power architecture. Consider the LVTTL compatibility for seamless integration with existing microcontroller interfaces without additional level shifting.
Part Context
This part belongs to the 71V256SA family of 3.3V asynchronous SRAMs. The family offers various speed grades including 10ns, 12ns, and 20ns options. The 'PZG' suffix specifically denotes the 28-pin TSOP package and lead-free construction. Other variants in the series include SOJ packages and industrial temperature range versions.
Replacement Considerations
Direct substitutes include other speed grades within the same package such as 71V256SA12PZG or 71V256SA10PZG. Cross-brand equivalents from IDT are available under the IDT71V256SA15PZG designation. Verify pinout compatibility before substitution.
