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Renesas 71024S20YGI8
- Part No.:
- 71024S20YGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
71024S20YGI8.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:4,664
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Product details
Overview
71024S20YGI8 from Renesas Electronics is a 128K × 8 (1 Mbit) high-speed CMOS static RAM with industrial temperature range (–40°C to +85°C), 20 ns access time, TTL-compatible I/O, and dual chip select plus output enable control. It operates from a single 5.0 V ±10% supply and is used in real-time embedded controllers requiring deterministic, no-refresh memory access.
For engineers reviewing the 71024S20YGI8 datasheet, 71020S20YGI8 pinout, 71024S20YGI8 application, or 71024S20YGI8 equivalent, key selection criteria include industrial-grade timing consistency, SOJ-32 package compatibility, low standby current (ISB1 = 10 mA), and bidirectional TTL-level data bus interfacing without level-shifting.
Technical Context
The 71024S20YGI8 implements fully static asynchronous architecture-no clocks or refresh cycles required-and uses dual active-low chip selects (CS1, CS2) with independent output enable (OE) for flexible memory banking and bus arbitration. Its address access time (tAA = 20 ns max) and read cycle time (tRC = 20 ns) are guaranteed across the full industrial temperature range.
All 8 bidirectional I/O pins support TTL voltage thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and drive ±4 mA/±8 mA loads, enabling direct connection to legacy microcontrollers and FPGAs. Power management includes two standby modes: ISB (40 mA, TTL-level deselect) and ISB1 (10 mA, CMOS-level full standby).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits); supports byte-wide parallel data transfers without interleaving. |
| Access Time (tAA) | 20 ns max at VCC = 4.5–5.5 V and –40°C to +85°C; ensures predictable latency in hard real-time systems. |
| Supply Voltage | 5.0 V ±10% (4.5–5.5 V); compatible with standard 5 V logic rails and legacy industrial power supplies. |
| Standby Current (ISB1) | 10 mA max under full CMOS-level deselect (CS1 ≥ VHC or CS2 ≤ VLC); enables low-power sleep states. |
| I/O Interface | TTL-compatible inputs/outputs; eliminates need for external level shifters when interfacing with 5 V MCUs or CPLDs. |
| Operating Temperature | –40°C to +85°C industrial grade; qualified for deployment in motor drives, PLCs, and outdoor telecom equipment. |
| Package | 32-pin Plastic SOJ (PBG32, 400 mil width); surface-mount compatible with standard reflow profiles. |
Pinout & Package
71024S20YGI8 is housed in a 32-pin Plastic SOJ (PBG32) package with 400 mil body width and gull-wing leads. Pin numbering follows JEDEC MS-012 standard, top-view orientation as shown in official Renesas documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K address space; A16 is MSB, A0 is LSB. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; direction controlled by WE and CS states-not tri-stated by OE alone. |
| CS1, CS2 | Chip Select Inputs | Active-low enables; both must be asserted (CS1 = L, CS2 = H) for read/write; either deassertion places device in standby. |
| OE | Output Enable | Active-low; controls output drivers only-does not affect internal memory state or write capability. |
| WE | Write Enable | Active-low; initiates write cycle when CS1/L and CS2/H are active; defines write pulse timing window (tWP ≥ 15 ns). |
| VCC, GND | Power Supply | Single 5 V supply; decoupling required per Renesas layout guidelines to maintain tAA/tRC timing integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Fully static operation | No clock, no refresh, no wait states-ideal for deterministic interrupt response in safety-critical firmware. |
| Dual chip select architecture | Enables memory bank switching or shared-bus arbitration without external logic or address decoding overhead. |
| Two-tier standby power | ISB1 = 10 mA (CMOS-level deselect) vs. ISB = 40 mA (TTL-level deselect)-supports granular power-state control. |
| Guaranteed industrial timing | tAA = 20 ns and tRC = 20 ns validated across –40°C to +85°C-no derating needed for thermal design margin. |
| TTL-compatible I/O | Direct interface with legacy 5 V microcontrollers (e.g., Intel 80C188, Motorola 68HC11) without level translators. |
Applications
| Industrial PLC Memory Buffer | Avionics Data Logger Cache |
|---|---|
Use Scenario: Storing real-time sensor samples and control outputs in programmable logic controllers operating in factory-floor environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary working memory for cyclic scan execution; provides zero-wait-state access during ladder logic evaluation and I/O update phases. Use Value: 20 ns access time ensures sub-microsecond memory latency within 100 µs PLC scan cycles, meeting IEC 61131-3 timing constraints. | Use Scenario: Capturing high-frequency flight telemetry (e.g., accelerometer, pressure, attitude) in airborne black box recorders where power interruption may occur unexpectedly. IC Role / Device Role / Timing Role: Volatile cache between ADC FIFO and non-volatile flash storage; retains data during brief brownouts via hold-up capacitor. Use Value: Fully static operation prevents data loss during power glitches; ISB1 = 10 mA minimizes battery drain during extended idle periods. |
| Medical Imaging Frame Buffer | Railway Signaling Controller RAM |
Use Scenario: Temporary storage of digitized X-ray or ultrasound frames prior to compression and transmission in portable diagnostic devices. IC Role / Device Role / Timing Role: High-bandwidth pixel buffer interfaced directly to image processor's 8-bit parallel bus; synchronized via WE-controlled writes. Use Value: Bidirectional TTL I/O eliminates level-shifter BOM cost; PBG32 SOJ footprint simplifies layout in space-constrained handheld enclosures. | Use Scenario: Storing interlocking logic tables and train position history in wayside signaling controllers deployed along rail corridors with extreme seasonal temperature variation. IC Role / Device Role / Timing Role: Non-refreshing program/data RAM for SIL-2-certified safety firmware; accessed by dual-redundant ARM Cortex-M4 cores. Use Value: Industrial temperature qualification (–40°C to +85°C) and guaranteed 20 ns timing eliminate thermal derating analysis and accelerate safety certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62128EV30LL-45ZSXIT | 512K × 8 organization, 45 ns access, 3.3 V supply only; no 5 V tolerance. | Requires voltage translation for 5 V systems; larger capacity but slower timing invalidates real-time use cases. | Select only if migrating to 3.3 V architecture and capacity >128K is mandatory. |
| AS6C1008-20ZIN | 128K × 8, 20 ns, 5 V supply, industrial temp-but uses TSOP-32 instead of SOJ-32. | Same timing and voltage, but different package footprint and solder profile; requires PCB redesign. | Consider only if SOJ assembly capability is unavailable and TSOP reflow is preferred. |
Compared with CY62128EV30LL-45ZSXIT and AS6C1008-20ZIN, the 71024S20YGI8 uniquely delivers 5 V TTL compatibility, SOJ-32 industrial packaging, and guaranteed 20 ns timing without voltage translation or layout change-making it optimal for legacy 5 V embedded upgrades.
Availability
71024S20YGI8 is available at Aetrix Electronics and suitable for industrial PLCs, avionics data loggers, medical imaging buffers, and railway signaling controllers requiring stable component supply across extended product lifecycles.
Supply support for 71024S20YGI8 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 infrastructure markets.
The IDT71024 family-acquired from Integrated Device Technology-was designed specifically for high-reliability, no-refresh memory applications in industrial control and legacy system upgrades where 5 V TTL interoperability remains essential.
FAQ
What is the maximum guaranteed access time for 71024S20YGI8 across its full industrial temperature range?
The 71024S20YGI8 has a maximum guaranteed address access time (tAA) of 20 ns over the full –40°C to +85°C industrial temperature range and 4.5–5.5 V supply, as specified in Renesas AC Electrical Characteristics Table 9. This value is production-tested and applies to all units shipped under this orderable part number.
Does 71024S20YGI8 require external refresh circuitry or clock signals to retain data?
No, the 71024S20YGI8 is a fully static RAM and requires no clocks, timers, or refresh cycles to retain data. Its internal latches hold state indefinitely as long as VCC is maintained within specification-making it suitable for battery-backed or intermittent-power applications where deterministic behavior is critical.
Can 71024S20YGI8 be used interchangeably with commercial-grade 71024S20TYG in an industrial design?
No-71024S20YGI8 is qualified for –40°C to +85°C operation with timing guaranteed across that full range, while 71024S20TYG is only rated for 0°C to +70°C. Substituting the commercial version in an industrial environment risks timing violations and data corruption outside its specified temperature envelope.
What is the function of the dual chip select pins (CS1 and CS2) on 71024S20YGI8?
CS1 and CS2 provide hierarchical chip enable control: CS1 must be LOW and CS2 HIGH for normal read/write operations; either pin deasserted places the device in standby mode (ISB or ISB1). This allows flexible memory mapping-e.g., CS2 can serve as a bank select while CS1 acts as local enable-reducing external decode logic.
Is 71024S20YGI8 RoHS-compliant and lead-free?
Yes, 71024S20YGI8 is a green (lead-free, halogen-free) device per Renesas' ordering information and compliance documentation. The "G" suffix in the part number explicitly denotes RoHS-compliant packaging and materials, and it meets JEDEC J-STD-609A Class 3 marking requirements.
71024S20YGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-BSOJ (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20ns
- Access Time:
- 20 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOJ
71024S20YGI8 FAQ
1.How can I place an order for 71024S20YGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 71024S20YGI8 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 71024S20YGI8 reliable?
The price and inventory of 71024S20YGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71024S20YGI8 is usually 5 days.
3.What payment methods are accepted for 71024S20YGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71024S20YGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71024S20YGI8?
71024S20YGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71024S20YGI8 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 71024S20YGI8?
For technical support, including 71024S20YGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71024S20YGI8 requirements.
6.How does Aetrix verify that 71024S20YGI8 is sourced from the original manufacturer or authorized distributors?
All 71024S20YGI8 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 71024S20YGI8 meets industry standards.
7.What is the process for return or replacement of 71024S20YGI8?
All 71024S20YGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 71024S20YGI8, 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 71024S20YGI8 part is unused and in its original packaging.
Return procedure for 71024S20YGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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