Description:The 71256SA 5V CMOS SRAM is organized as 32K x 8. All bidirectional inputs and outputs of the 71256SA are TTL-compatible and operation is from a single 5V supply. Fully static asynchronous circuitry is used, requiring no clocks or refresh for operation.
Renesas provides a recommended PCB layout guide in their application note (APL-AN-1201) for thermal management. It suggests using a 4-layer PCB with a solid ground plane, placing thermal vias under the package, and using a thermal pad on the bottom of the package.
Renesas recommends following the guidelines in their reliability handbook (Renesas Reliability Handbook, Rev. 2.00) for high-temperature operation. This includes derating the device, using a heat sink, and ensuring proper thermal management.
Renesas recommends using a ceramic capacitor with a capacitance of 10uF to 22uF, an ESR of < 1 ohm, and a voltage rating of 6.3V or higher for the input capacitor (CIN). The specific requirements may vary depending on the application and operating conditions.
Renesas suggests selecting an output capacitor (COUT) based on the output voltage, output current, and desired ripple voltage. A general guideline is to use a capacitor with a capacitance of 10uF to 47uF, an ESR of < 1 ohm, and a voltage rating of 2x the output voltage. The specific requirements may vary depending on the application and operating conditions.
Renesas provides guidelines for PCB assembly and soldering in their package assembly and soldering manual (Renesas Package Assembly and Soldering Manual, Rev. 2.00). This includes recommendations for soldering temperature, soldering time, and PCB cleaning.
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71256SA20PZGI Overview
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