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Renesas 71024S25TYGI8
- Part No.:
- 71024S25TYGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.300", 7.62mm Width)
- Datasheet:
-
71024S25TYGI8.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:2,091
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Product details
Overview
71024S25TYGI8 from Renesas Electronics is a 128K × 8-bit (1 Mbit) high-speed CMOS static RAM with industrial temperature range (–40°C to +85°C), 25 ns access time, single 5.0 V ±10% supply, and TTL-compatible bidirectional I/O. It serves as asynchronous main memory or buffer in embedded controllers and legacy industrial systems requiring zero-refresh operation.
For engineers reviewing the 71024S25TYGI8 datasheet, 71024S25TYGI8 pinout, 71024S25TYGI8 application, or 71024S25TYGI8 equivalent, key selection criteria include industrial-grade timing consistency, SOJ-32 package compatibility, low standby current (ISB1 = 10 mA), and dual chip select architecture for memory banking.
Technical Context
The 71024S25TYGI8 implements fully static asynchronous logic with no clocks or refresh cycles required. Its dual chip select (CS1/CS2) and independent output enable (OE) support hierarchical memory decoding and bus sharing in multi-chip systems.
It uses high-reliability CMOS process technology with TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and guaranteed AC timing under industrial conditions: tAA ≤ 25 ns, tRC ≤ 25 ns, tOE ≤ 8 ns, and tWHZ ≤ 8 ns - all specified at VCC = 5.0 V ±10% and TA = –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits), byte-wide parallel interface |
| Access Time (tAA) | 25 ns max - determines minimum read latency from address valid to data valid |
| Cycle Time (tRC) | 25 ns max - sets maximum sustained random read/write rate (40 MHz) |
| Supply Voltage | 5.0 V ±10% - compatible with legacy 5 V TTL/CMOS system rails |
| Operating Temperature | –40°C to +85°C - qualified for industrial control, test equipment, and avionics subsystems |
| Standby Current (ISB1) | 10 mA max - achieved when CS1 ≥ VHC or CS2 ≤ VLC, enabling low-power sleep mode |
| I/O Capacitance | CI/O ≤ 8 pF - limits signal integrity degradation on shared data buses |
Pinout & Package
71024S25TYGI8 is packaged in a 32-pin Plastic Small Outline J-Lead (SOJ) with 300-mil body width (PJG32). Pin assignment follows JEDEC MS-012AC standard for 32-pin SOJ.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word decode; A16 is MSB |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; direction controlled by WE and CS states |
| CS1, CS2 | Chip Select Inputs | Active-low (CS1) and active-high (CS2) enables hierarchical memory mapping and bank selection |
| OE | Output Enable | Active-low control of output drivers; allows bus sharing without external tri-state logic |
| WE | Write Enable | Active-low signal initiating write cycle; latches data on falling edge when CS active |
| VCC, GND | Power Supply | Single 5 V supply with dedicated ground pin; decoupling required per JEDEC SOJ layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Zero-refresh static architecture | Eliminates DRAM controller complexity and refresh overhead in microcontroller-based systems |
| Dual chip select with independent OE | Enables seamless integration into 16-bit or 32-bit bus systems via address decoding without glue logic |
| TTL-compatible I/O levels | Direct interfacing with legacy 5 V microprocessors (e.g., 80Cxx, 68K, Z80) without level-shifting |
| Industrial temperature qualification | Guaranteed 25 ns timing across –40°C to +85°C, supporting uncooled industrial enclosures |
| Low ISB1 standby current | 10 mA max in full CMOS standby reduces power in always-on monitoring subsystems |
Applications
| Industrial PLC Memory Buffer | Legacy Test Equipment Data Capture |
|---|---|
|
Use Scenario: Storing real-time sensor logs and program state in programmable logic controllers operating in factory-floor environments. IC Role / Device Role / Timing Role: Asynchronous SRAM providing deterministic 25 ns read/write access for cyclic executive tasks. Use Value: Eliminates refresh-induced jitter in deterministic scan cycles; supports direct MPU bus attachment without wait-state insertion. |
Use Scenario: Capturing high-speed waveform samples from analog front-ends in automated test systems with fixed 5 V logic rails. IC Role / Device Role / Timing Role: Byte-wide data buffer synchronized to trigger events using WE-controlled write timing. Use Value: 8 pF I/O capacitance minimizes sampling skew; dual CS pins allow interleaved capture between analog and digital channels. |
| Avionics Subsystem Boot ROM Shadow | Medical Imaging Frame Buffer |
|
Use Scenario: Mirroring boot code from slower PROM into fast local memory during aircraft system initialization. IC Role / Device Role / Timing Role: Non-volatile shadow RAM holding critical startup instructions for flight control processors. Use Value: Industrial temp rating ensures reliability during thermal cycling; 5 V tolerance matches legacy ARINC-429 interface voltage domains. |
Use Scenario: Temporary storage of digitized X-ray or ultrasound frames before compression and transmission in portable diagnostic devices. IC Role / Device Role / Timing Role: High-speed frame buffer supporting burst writes from ADC interfaces and sequential reads to display engines. Use Value: 25 ns tAA enables >30 MB/s sustained throughput; low tOH (4 ns) preserves pixel timing integrity during raster scanning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62128EV30LL-45ZSXIT | 512K × 8-bit, 45 ns access, 3.3 V core, SOIC-32 package | Higher density but slower speed and lower voltage; requires level translation in 5 V systems | Select only if migrating to 3.3 V architecture and needing >128K capacity |
| AS6C1008-25ZIN | 128K × 8-bit, 25 ns access, 5 V supply, SOP-32 package (not SOJ) | Same timing and voltage but different lead form; requires PCB footprint redesign | Choose when SOJ-to-SOP conversion is acceptable and RoHS-6 compliance is mandatory |
Compared with 71024S25TYGI8, CY62128EV30LL-45ZSXIT offers greater density at reduced speed and incompatible voltage, while AS6C1008-25ZIN matches timing and voltage but demands mechanical rework due to SOP-32 packaging - neither is pin-compatible.
Availability
71024S25TYGI8 is available at Aetrix Electronics and suitable for industrial PLC memory buffers, legacy test equipment data capture, and avionics subsystem boot ROM shadowing requiring stable component supply across extended product lifecycles.
Supply support for 71024S25TYGI8 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 delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The IDT71024 family - now part of Renesas' legacy parallel SRAM portfolio - was designed specifically for 5 V embedded systems requiring deterministic, zero-refresh memory with industrial temperature resilience.
FAQ
What is the operating voltage range for the 71024S25TYGI8?
The 71024S25TYGI8 operates from a single 5.0 V supply with a specified range of 4.5 V to 5.5 V. This 10% tolerance ensures robust functionality across noisy industrial power rails and aging voltage regulators without requiring external regulation beyond standard 5 V filtering.
Does the 71024S25TYGI8 require refresh circuitry?
No, the 71024S25TYGI8 is a fully static RAM and requires no refresh cycles or clocks. Its CMOS latch-based memory cells retain data indefinitely as long as VCC is applied within specification - simplifying design for microcontroller-based systems lacking DRAM controllers.
What package type does the 71024S25TYGI8 use?
The 71024S25TYGI8 uses a 32-pin Plastic Small Outline J-Lead (SOJ) package with 300-mil body width (PJG32). This surface-mount package features gull-wing leads and is compatible with standard SOJ reflow profiles per JEDEC J-STD-020.
How does the dual chip select architecture function in the 71024S25TYGI8?
The 71024S25TYGI8 uses CS1 (active-low) and CS2 (active-high) to enable three distinct operational states: deselected (both inactive), output-disabled read (CS1 low, CS2 high, OE low), and write (CS1 low, CS2 high, WE low). This allows flexible memory banking and bus arbitration without external logic.
Is the 71024S25TYGI8 compliant with modern environmental standards?
Yes, the 71024S25TYGI8 is a green (lead-free, halogen-free) device per Renesas' ordering designation "G" and complies with RoHS Directive 2011/65/EU. It contains no intentionally added lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE.
71024S25TYGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-BSOJ (0.300", 7.62mm 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:
- 25ns
- Access Time:
- 25 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
71024S25TYGI8 FAQ
1.How can I place an order for 71024S25TYGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 71024S25TYGI8 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 71024S25TYGI8 reliable?
The price and inventory of 71024S25TYGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71024S25TYGI8 is usually 5 days.
3.What payment methods are accepted for 71024S25TYGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71024S25TYGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71024S25TYGI8?
71024S25TYGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71024S25TYGI8 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 71024S25TYGI8?
For technical support, including 71024S25TYGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71024S25TYGI8 requirements.
6.How does Aetrix verify that 71024S25TYGI8 is sourced from the original manufacturer or authorized distributors?
All 71024S25TYGI8 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 71024S25TYGI8 meets industry standards.
7.What is the process for return or replacement of 71024S25TYGI8?
All 71024S25TYGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 71024S25TYGI8, 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 71024S25TYGI8 part is unused and in its original packaging.
Return procedure for 71024S25TYGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71024S25TYGI8 Tags
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