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) which includes thermal design considerations, such as thermal vias, copper pours, and component placement, to ensure optimal thermal performance.
Renesas recommends a specific power sequencing scheme in their datasheet, which involves powering up the VCC pin before the VDD pin. Additionally, they provide a power sequencing diagram in their application note (APL-AN-1202) to ensure proper device operation.
Renesas recommends using high-frequency, low-ESR capacitors (e.g., 0.1uF, 1uF, and 10uF) with a voltage rating of 6.3V or higher, placed as close as possible to the device's power pins to minimize noise and ensure stable operation.
Renesas provides guidelines for JTAG interface handling during production testing in their application note (APL-AN-1203), including recommendations for JTAG pin connections, signal levels, and testing procedures.
The thermal resistance values for the 71256SA12YG are not explicitly stated in the datasheet, but can be calculated using the package thermal model provided by Renesas. The thermal resistance values are typically around 20-30°C/W for the junction-to-ambient thermal resistance (RθJA) and 10-20°C/W for the junction-to-case thermal resistance (RθJC).
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71256SA12YG Overview
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