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Renesas 71024S15YGI8
- Part No.:
- 71024S15YGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
71024S15YGI8.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,534
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Product details
Overview
71024S15YGI8 from Renesas Electronics is a 128K × 8-bit (1 Mbit) high-speed CMOS static RAM with industrial temperature range (–40°C to +85°C), 15 ns access time, 5 V single-supply operation, and TTL-compatible bidirectional I/O. It serves as main or cache memory in embedded controllers, industrial PLCs, and legacy communication interface buffers requiring deterministic, no-refresh asynchronous operation.
For engineers reviewing the 71024S15YGI8 datasheet, 71024S15YGI8 pinout, 71024S15YGI8 application, or 71024S15YGI8 equivalent, key selection considerations include its dual chip select architecture, 6 ns OE-to-output delay, SOJ-32 package compatibility, low 10 mA full-standby current, and verified operation across –40°C to +85°C without derating.
Technical Context
The 71024S15YGI8 implements fully static asynchronous logic with no clocks or refresh cycles required. Its address decoding uses 17 address lines (A0–A16) to access 131,072 × 8-bit locations, and data flow is controlled by independent CS1/CS2 enables plus OE and WE signals.
It supports two standby modes: ISB (TTL-level chip deselect, 40 mA max) and ISB1 (CMOS-level full standby, 10 mA max). All inputs meet VIH ≥ 2.2 V and VIL ≤ 0.8 V at VCC = 5.0 V ± 0.5 V, ensuring robust noise margin in mixed-signal industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits); supports byte-wide data bus interfacing without external demultiplexing |
| Access Time (tAA) | 15 ns max at VCC = 4.5–5.5 V and TA = –40°C to +85°C; defines minimum read latency from address valid to data stable |
| Supply Voltage | 5.0 V ± 10% (4.5–5.5 V); compatible with legacy 5 V TTL/CMOS system rails without level-shifting |
| Standby Current (ISB1) | 10 mA max at VCC = 5.5 V and f = 0; enables ultra-low-power hold state during processor sleep or idle cycles |
| Output Enable Delay (tOE) | 7 ns max; guarantees data validity within 7 ns after OE assertion, critical for tight timing in burst-mode controllers |
| Package | 32-pin Plastic SOJ, 400 mil width (PBG32); industry-standard footprint with through-hole mounting and thermal reliability |
| Operating Temperature | –40°C to +85°C; qualified for continuous operation in uncontrolled industrial enclosures and outdoor base stations |
Pinout & Package
71024S15YGI8 is housed in a 32-pin Plastic SOJ (Small Outline J-lead) package, 400 mil body width (PBG32), with gull-wing J-leads for reliable through-hole soldering and thermal dissipation in high-vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus; A0 = LSB, A16 = MSB; fully decoded to select one of 131,072 memory locations |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit TTL-compatible data path; direction controlled by WE and CS states; no external transceivers needed |
| CS1, CS2 | Chip Select Inputs | Active-low (CS1) and active-high (CS2) enables; both must be asserted simultaneously for device selection |
| OE | Output Enable | Active-low control of output drivers; enables concurrent reads from multiple SRAMs on shared data bus |
| WE | Write Enable | Active-low signal initiating write cycle; latches data on rising edge when CS1/CS2 are active |
| VCC, GND | Power Supply | Single 5 V supply with dedicated VCC (Pin 24) and GND (Pin 16); decoupling recommended within 10 mm |
| NC | No Connect | Pin 1 is NC; must remain unconnected per design - not usable as spare I/O or tie point |
Key Features
| Feature | Design Value |
|---|---|
| Dual Chip Select Architecture | CS1 (active-low) and CS2 (active-high) allow hierarchical memory mapping and selective bank enabling in multi-SRAM systems |
| 6 ns Output Enable Response | tOE = 6 ns min ensures sub-10 ns data availability after OE assertion - essential for real-time interrupt service routines |
| Two-Tier Standby Power Control | ISB1 = 10 mA (CMOS-level deselect) vs. ISB = 40 mA (TTL-level deselect) enables dynamic power-state optimization |
| TTL-Compatible I/O | VIH ≥ 2.2 V, VIL ≤ 0.8 V, VOH ≥ 2.4 V, VOL ≤ 0.4 V at IOL = 8 mA - interoperable with legacy 5 V microcontrollers and FPGAs |
| Industrial Temperature Qualification | Guaranteed 15 ns access and full functionality across –40°C to +85°C without derating - validated per JEDEC JESD22-A108 |
Applications
| Industrial PLC Memory Buffer | Legacy Telecom Line Card Cache |
|---|---|
|
Use Scenario: Real-time I/O scan buffering in programmable logic controllers where deterministic memory access avoids jitter-induced control loop errors. IC Role / Device Role / Timing Role: Asynchronous byte-wide scratchpad memory holding input/output image tables with zero-cycle wait-state reads. Use Value: 15 ns tAA and 7 ns tOE ensure consistent <25 ns total read latency - meeting hard real-time deadlines under worst-case temperature and voltage conditions. |
Use Scenario: Frame buffer storage in T1/E1 line interface units handling HDLC or CAS signaling with strict bit-timing constraints. IC Role / Device Role / Timing Role: Non-refreshing data staging memory between serial framer and parallel host bus, synchronized via discrete control logic. Use Value: Dual CS pins enable seamless bank switching between transmit/receive buffers without bus contention or glue logic. |
| Avionics Display Controller Framestore | Medical Imaging Acquisition Buffer |
|
Use Scenario: Pixel data buffering in ruggedized cockpit display units operating in extended temperature environments with EMI-heavy avionics bays. IC Role / Device Role / Timing Role: Static frame memory holding rendered GUI layers prior to video DAC conversion; accessed asynchronously by display controller. Use Value: PBG32 SOJ package provides mechanical stability under vibration; –40°C to +85°C rating eliminates thermal throttling during cold-soak or high-power operation. |
Use Scenario: Raw sensor data capture in portable ultrasound or X-ray acquisition modules requiring lossless buffering before compression or transfer. IC Role / Device Role / Timing Role: High-reliability temporary storage for ADC samples prior to DMA transfer to ARM-based host processor. Use Value: 10 mA ISB1 current enables >90% power reduction during inter-frame idle periods - extending battery life in handheld diagnostics tools. |
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-45ZAXI | 128K × 8, 45 ns access, 3.3 V core (with 5 V tolerant I/O), TSOP-II-32 package | Requires level translation in pure 5 V systems; lower speed but better power efficiency at 3.3 V | Prefer for new 3.3 V designs with space-constrained layouts; not drop-in for 5 V-only boards |
| AS6C1008-15PIN | 128K × 8, 15 ns access, 5 V supply, PDIP-32 and SOJ-32 packages available | Same speed and voltage, but only single CS input and no ISB1 mode - higher standby current (25 mA) | Valid functional alternative if dual CS and ultra-low ISB1 are not required; identical SOJ-32 footprint |
Compared with CY62128EV30LL-45ZAXI and AS6C1008-15PIN, the 71024S15YGI8 uniquely delivers 15 ns performance in a 5 V system with dual CS control and 10 mA full-standby current - making it optimal for legacy industrial upgrades where voltage, timing, and power envelopes are fixed.
Availability
71024S15YGI8 is available at Aetrix Electronics and suitable for industrial PLCs, telecom line cards, avionics display controllers, and medical imaging acquisition systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 71024S15YGI8 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, infrastructure, and IoT applications.
The 71024S15YGI8 belongs to Renesas' legacy high-speed CMOS SRAM product line, designed specifically for deterministic, no-refresh memory interfacing in 5 V industrial control and communications equipment.
FAQ
What is the operating temperature range specified for the 71024S15YGI8?
The 71024S15YGI8 is rated for industrial temperature operation from –40°C to +85°C. This range is guaranteed across all AC and DC electrical specifications including 15 ns access time, 10 mA ISB1 standby current, and TTL-compatible I/O thresholds - validated per JEDEC standards without derating.
Does the 71024S15YGI8 require a clock or refresh circuitry?
No, the 71024S15YGI8 uses fully static asynchronous CMOS design and requires no clock signal or periodic refresh cycles. Data retention is maintained indefinitely as long as VCC remains within 4.5–5.5 V and ambient temperature stays within –40°C to +85°C - simplifying system timing design and reducing BOM count.
What package type and dimensions does the 71024S15YGI8 use?
The 71024S15YGI8 is packaged in a 32-pin Plastic SOJ (Small Outline J-lead) with 400 mil body width (PBG32). Its lead pitch is 1.27 mm, body width is 10.16 mm, and total length is 21.84 mm - matching standard SOJ-32 footprints used in industrial backplanes and legacy telecom modules.
How does the dual chip select (CS1/CS2) architecture function in the 71024S15YGI8?
In the 71024S15YGI8, CS1 is active-low and CS2 is active-high; both must be asserted simultaneously (CS1 = L, CS2 = H) to enable the device. This allows hierarchical decoding - for example, using CS2 as a bank-select signal and CS1 as a local-enable - reducing external logic in multi-SRAM systems.
What is the maximum output drive capability of the 71024S15YGI8 I/O pins?
The 71024S15YGI8 I/O pins deliver VOH ≥ 2.4 V at IOH = –4 mA and VOL ≤ 0.4 V at IOL = 8 mA under VCC = 4.5 V minimum. This meets standard TTL output drive requirements and supports direct connection to 5 V microcontrollers, CPLDs, and bus transceivers without external buffers.
71024S15YGI8 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:
- 15ns
- Access Time:
- 15 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
71024S15YGI8 FAQ
1.How can I place an order for 71024S15YGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 71024S15YGI8 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 71024S15YGI8 reliable?
The price and inventory of 71024S15YGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71024S15YGI8 is usually 5 days.
3.What payment methods are accepted for 71024S15YGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71024S15YGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71024S15YGI8?
71024S15YGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71024S15YGI8 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 71024S15YGI8?
For technical support, including 71024S15YGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71024S15YGI8 requirements.
6.How does Aetrix verify that 71024S15YGI8 is sourced from the original manufacturer or authorized distributors?
All 71024S15YGI8 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 71024S15YGI8 meets industry standards.
7.What is the process for return or replacement of 71024S15YGI8?
All 71024S15YGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 71024S15YGI8, 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 71024S15YGI8 part is unused and in its original packaging.
Return procedure for 71024S15YGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71024S15YGI8 Tags
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