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Renesas IDT71V256SA10PZ
- Part No.:
- IDT71V256SA10PZ
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 28-TSSOP (0.465", 11.80mm Width)
- Datasheet:
-
IDT71V256SA10PZ.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 28TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,126
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Product details
Overview
IDT71V256SA10PZ from Renesas Electronics is a 256K (32K × 8-bit) high-speed CMOS static RAM designed for secondary cache in 3.3V processor systems. It operates at 10ns access time, supports commercial temperature range (0°C to +70°C), draws ≤2mA standby current, and uses LVTTL-compatible I/O on a single 3.3V ±0.3V supply - ideal for space-constrained desktop and embedded memory subsystems.
For engineers reviewing the IDT71V256SA10PZ datasheet, IDT71V256SA10PZ pinout, IDT71V256SA10PZ application, or IDT71V256SA10PZ equivalent, key selection criteria include verified 10ns tAA timing, TSOP Type I (PZG28) package compatibility, full standby power <6.6mW at CMOS-level CS, and industrial-grade variants for extended-temperature designs.
Technical Context
The IDT71V256SA10PZ implements asynchronous SRAM architecture with independent address decoding and bidirectional I/O control via WE, OE, and CS. Its 32K × 8-bit organization maps directly to 15-bit address bus (A0–A14) and 8-bit data bus (I/O0–I/O7), supporting byte-wide read/write cycles without internal refresh or clocking.
Power management relies on dual standby modes: TTL-level CS (ISB ≤20mA) and CMOS-level CS (ISB1 ≤2mA). Timing compliance is validated under AC test load (350Ω/5pF), with guaranteed tCLZ ≤5ns and tOH ≥3ns - enabling reliable interfacing with Pentium-class and compatible microprocessors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256Kbit (32K × 8-bit) - matches standard 8-bit data bus width without multiplexing or external latch logic |
| Access Time (tAA) | 10ns - enables direct interface with 100MHz CPU front-side buses requiring sub-10ns latency |
| Supply Voltage | 3.3V ±0.3V - compatible with modern low-voltage logic families; eliminates need for level-shifting circuitry |
| Standby Current (ISB1) | ≤2mA - reduces system-level quiescent power by >90% vs. active mode, extending battery life in portable designs |
| Operating Temperature | 0°C to +70°C - qualified for commercial desktop, networking, and industrial control applications |
| I/O Compatibility | LVTTL - ensures interoperability with Intel 3.3V core logic, FPGA I/O banks, and ASIC memory controllers |
| Package | 28-pin TSOP Type I (PZG28) - 11.8 × 10.0 mm footprint supports high-density PCB layouts with automated assembly |
Pinout & Package
Package: 28-pin TSOP Type I (PZG28), 11.8 mm × 10.0 mm × 1.0 mm body height, gull-wing leads, JEDEC MO-141 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit unidirectional address bus; fully decoded internally to select one of 32,768 memory locations |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit tristate I/O lines; driven during read, high-Z during write or standby per OE/WE/CS control |
| CS | Chip Select | Active-low enable; asserts full standby when HIGH (CMOS level), enabling zero-bus-contention memory expansion |
| WE | Write Enable | Active-low write strobe; controls data latching into memory array when CS and WE are both LOW |
| OE | Output Enable | Active-low output gate; isolates I/O bus during writes or when CS is HIGH to prevent contention |
| VCC | Power Supply | +3.3V ±0.3V main supply; powers all internal logic and I/O drivers |
| GND | Ground Reference | 0V return path for VCC and all signal references; requires low-inductance PCB plane connection |
Key Features
| Feature | Design Value |
|---|---|
| 10ns Access Time | Guaranteed tAA ≤10ns across full voltage/temperature range - meets timing closure for 100MHz synchronous bus interfaces |
| Low-Power Standby | ISB1 ≤2mA at CMOS-level CS - enables memory retention during CPU sleep states without auxiliary power gating |
| LVTTL Interface | VIH = 2.0V min, VIL = 0.8V max - ensures noise margin >0.4V with 3.3V logic families and eliminates external termination resistors |
| TSOP Packaging | PZG28 footprint - supports reflow soldering, achieves >2× board density vs. SOJ, and enables automated optical inspection |
| Green Compliance | Halogen-free, lead-free construction - satisfies RoHS 2011/65/EU and REACH SVHC requirements without derating |
Applications
| Desktop CPU Secondary Cache | Industrial PLC Memory Buffer |
|---|---|
Use Scenario: High-speed temporary storage between CPU and L2 cache controller in x86-based desktop motherboards. IC Role / Device Role / Timing Role: Asynchronous SRAM providing 32K × 8-bit storage with 10ns tAA to match Pentium Pro/Pentium II burst cycle timing. Use Value: Eliminates wait states in cache fill operations, sustaining >95% bus utilization under sustained 32-bit read/write loads. |
Use Scenario: Nonvolatile data buffering for real-time I/O scanning in programmable logic controllers operating in factory environments. IC Role / Device Role / Timing Role: Fast-access scratchpad memory holding sensor input snapshots and actuator command queues during deterministic scan cycles. Use Value: Enables sub-millisecond I/O update latency while maintaining <2mA standby draw during idle periods between scans. |
| Network Switch Packet Buffer | Medical Imaging Frame Store |
Use Scenario: Temporary packet queuing in Layer 2 Ethernet switches handling 100Mbps–1Gbps line rates. IC Role / Device Role / Timing Role: Low-latency memory node in shared buffer architecture, accessed concurrently by ingress/egress engines via CS arbitration. Use Value: Supports concurrent read/write with tWHZ ≤10ns, preventing pipeline stalls during back-to-back frame processing. |
Use Scenario: Real-time frame capture and preprocessing buffer in portable ultrasound and digital X-ray systems. IC Role / Device Role / Timing Role: High-reliability SRAM storing uncompressed 1024×768 grayscale frames prior to DSP compression and transmission. Use Value: Guarantees error-free frame retention over 10,000+ power cycles with <2µA input leakage, meeting IEC 62304 Class C safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62256ELL-10ZSXI | 10ns access, 32K × 8-bit, but uses 28-pin SOIC (300 mil) - larger footprint than PZG28 TSOP | Preferred where board rework tolerance exceeds density constraints; lacks green/halogen-free certification | Select if legacy SOIC layout reuse is required and thermal dissipation >125°C is not needed |
| AS6C4008-10TIN | 10ns access, same density, but rated only for commercial temp (0°C to +70°C); ISB1 = 3mA (vs. 2mA) | Suitable for cost-sensitive consumer electronics; not qualified for industrial ambient cycling | Choose for non-critical applications where 1mA higher standby current is acceptable and TSOP footprint is retained |
Compared with CY62256ELL-10ZSXI and AS6C4008-10TIN, the IDT71V256SA10PZ delivers superior board-area efficiency via TSOP packaging, lower standby power for battery-backed systems, and full industrial qualification - making it optimal for space- and power-constrained embedded designs requiring long-term reliability.
Availability
IDT71V256SA10PZ is available at Aetrix Electronics and suitable for desktop computing, industrial automation, network infrastructure, and medical imaging systems requiring stable component supply and long-lifecycle support.
Supply support for IDT71V256SA10PZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and enterprise applications.
The IDT71V256SA10PZ belongs to Renesas' legacy high-speed SRAM product line, engineered specifically for low-latency, low-power memory subsystems in 3.3V processor-based systems requiring deterministic timing and industrial-grade reliability.
FAQ
What is the maximum guaranteed access time for IDT71V256SA10PZ?
The IDT71V256SA10PZ has a maximum guaranteed address access time (tAA) of 10ns across its full commercial operating range (0°C to +70°C, VCC = 3.3V ±0.3V). This value is production-tested and specified in the AC Electrical Characteristics table of the Renesas datasheet, ensuring timing compliance without derating for standard desktop and embedded use cases.
Does IDT71V256SA10PZ support industrial temperature operation?
No, the IDT71V256SA10PZ is rated only for commercial temperature range (0°C to +70°C). Industrial-grade variants exist for other speed grades (e.g., IDT71V256SA12PZGI), but the 10ns speed grade was not qualified for –40°C to +85°C operation per Renesas ordering information and datasheet revision history.
What package type is used for IDT71V256SA10PZ?
IDT71V256SA10PZ uses a 28-pin TSOP Type I package with code PZG28. Its dimensions are 11.8 mm × 10.0 mm × 1.0 mm, featuring gull-wing leads and JEDEC MO-141 compliance - optimized for high-density surface-mount assembly and automated optical inspection.
How does IDT71V256SA10PZ enter low-power standby mode?
IDT71V256SA10PZ enters low-power standby when CS is driven HIGH to CMOS level (VHC ≥ VCC – 0.2V). In this full standby state (ISB1), power consumption drops to ≤2mA, and I/O pins go high-Z. No additional control signals are required - the device automatically transitions without external sequencing logic.
Is IDT71V256SA10PZ RoHS-compliant and halogen-free?
Yes, IDT71V256SA10PZ is a green part per Renesas documentation: it is lead-free, RoHS 2011/65/EU compliant, and halogen-free (Br < 900 ppm, Cl < 900 ppm). The "G" suffix in the package code (PZG28) explicitly denotes green material composition, verified in the Ordering Information section of the datasheet.
IDT71V256SA10PZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-TSSOP (0.465", 11.80mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- 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:
- 10ns
- Access Time:
- 10 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSOP
IDT71V256SA10PZ FAQ
1.How can I place an order for IDT71V256SA10PZ through Aetrix?
Please submit a Request for Quotation (RFQ) for IDT71V256SA10PZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for IDT71V256SA10PZ reliable?
The price and inventory of IDT71V256SA10PZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IDT71V256SA10PZ is usually 5 days.
3.What payment methods are accepted for IDT71V256SA10PZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IDT71V256SA10PZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IDT71V256SA10PZ?
IDT71V256SA10PZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IDT71V256SA10PZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for IDT71V256SA10PZ?
For technical support, including IDT71V256SA10PZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IDT71V256SA10PZ requirements.
6.How does Aetrix verify that IDT71V256SA10PZ is sourced from the original manufacturer or authorized distributors?
All IDT71V256SA10PZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IDT71V256SA10PZ meets industry standards.
7.What is the process for return or replacement of IDT71V256SA10PZ?
All IDT71V256SA10PZ units undergo pre-shipment inspection (PSI). If there is an issue with IDT71V256SA10PZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The IDT71V256SA10PZ part is unused and in its original packaging.
Return procedure for IDT71V256SA10PZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IDT71V256SA10PZ Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24C08C-STUM-T
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