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Renesas 71024S12YGI
- Part No.:
- 71024S12YGI
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
71024S12YGI.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:2,678
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Product details
Overview
71024S12YGI from Renesas Electronics is a 128K × 8-bit (1 Mbit) high-speed CMOS static RAM with 12 ns access time, industrial temperature range (–40°C to +85°C), single 5V supply operation, and TTL-compatible bidirectional I/O. It serves as fast, fully static main or cache memory in embedded controllers, industrial PLCs, and legacy communication interface buffers.
For engineers reviewing the 71024S12YGI datasheet, 71024S12YGI pinout, 71024S12YGI application, or 71024S12YGI equivalent, key selection criteria include guaranteed 12 ns read cycle time, dual chip select architecture with independent OE control, low 10 mA full-standby current, and SOJ-32 package compatibility for through-hole or reflow assembly in ruggedized systems.
Technical Context
The 71024S12YGI implements fully asynchronous static RAM logic with no clocks or refresh required. Its dual CS architecture (CS1 active-low, CS2 active-high) enables hierarchical memory decoding, while the dedicated OE pin supports bus contention management with 6 ns output enable delay.
It uses high-reliability CMOS process technology with TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and rail-to-rail output drive (VOH ≥ 2.4 V at –4 mA, VOL ≤ 0.4 V at 8 mA), ensuring interoperability with legacy 5V microcontroller buses without level shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits), byte-wide parallel interface |
| Access Time (tAA) | 12 ns max - determines minimum read latency from address valid to data valid |
| Read Cycle Time (tRC) | 12 ns max - sets maximum sustained random read throughput (83.3 MHz) |
| Supply Voltage | 5.0 V ± 10% (4.5–5.5 V) - compatible with standard 5V logic rails |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade environmental stress |
| Standby Current (ISB1) | 10 mA max - ultra-low power CMOS-level deselection for energy-sensitive operation |
| I/O Capacitance | CI/O ≤ 8 pF - minimizes signal integrity degradation on high-speed buses |
Pinout & Package
71024S12YGI is packaged in a 32-pin Plastic SOJ (Small Outline J-lead) with 400-mil body width (PBG32). The package supports through-hole insertion and infrared reflow, with gull-wing leads optimized for mechanical reliability in vibration-prone environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus (217 = 131,072 locations); A16 enables full 128K addressing |
| 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 | CS1 active-low + CS2 active-high enables decode flexibility; both required for selection |
| OE | Output Enable | Active-low control of output drivers; allows bus sharing without tri-state conflicts |
| WE | Write Enable | Active-low signal initiating write cycles; decouples write timing from CS transitions |
| VCC, GND | Power Supply | Single 5V supply with dedicated ground; no separate VSS or VDD separation required |
Key Features
| Feature | Design Value |
|---|---|
| 12 ns Guaranteed Access | Ensures deterministic timing margin for 83 MHz burst reads in real-time control loops |
| Dual Chip Select Architecture | Supports multi-bank memory mapping and hierarchical decoding without external logic |
| 6 ns Output Enable Delay | Enables tight timing alignment with microprocessor WAIT or RD# signals |
| 10 mA Full Standby Current | Reduces system idle power by >75% vs. standard 40 mA standby SRAMs |
| TTL-Compatible I/O | Eliminates need for level translators when interfacing with 80Cxx, Z80, or 68K-family CPUs |
Applications
| Industrial PLC Memory Buffer | Legacy Communication Protocol Stack |
|---|---|
Use Scenario: Storing real-time I/O scan data and ladder logic state variables in programmable logic controllers operating in factory-floor environments. IC Role / Device Role / Timing Role: Primary data buffer between CPU and fieldbus interface ASICs, requiring deterministic 12 ns access under –40°C cold-start conditions. Use Value: Industrial temperature rating and 10 mA ISB1 ensure reliable operation during extended thermal cycling and unattended 24/7 runtime. | Use Scenario: Holding protocol frame buffers and command queues for RS-485/Modbus or CANopen master nodes in building automation gateways. IC Role / Device Role / Timing Role: High-speed scratchpad memory for packet assembly/disassembly engines, synchronized to UART or controller peripheral clocks. Use Value: Dual CS pins allow dynamic bank switching between transmit and receive buffers without CPU intervention or added glue logic. |
| Embedded Controller Boot ROM Shadow | Ruggedized Test Equipment Data Log |
Use Scenario: Shadowing slower flash-based boot code into fast SRAM during system initialization in aerospace-grade flight computers. IC Role / Device Role / Timing Role: Read-only execution memory mapped at reset vector; accessed via fixed address decode with CS1/CS2 tied to address MSBs. Use Value: 12 ns tAA guarantees instruction fetch latency remains below CPU pipeline stall threshold across full temperature range. | Use Scenario: Capturing high-speed analog waveform snapshots in portable oscilloscopes or power quality analyzers deployed in utility substations. IC Role / Device Role / Timing Role: Circular buffer for ADC sample streaming, written continuously via DMA bursts and read asynchronously by host processor. Use Value: 8 pF I/O capacitance and 12 ns tRC support clean signal integrity at 20+ MHz burst write rates without trace termination. |
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 | 45 ns access, 3.3 V supply, TSOP-32 package | Requires level translation for 5V systems; lower power but slower timing | Select only if migrating to 3.3V architecture and relaxing timing constraints |
| AS6C4008-12ZIN | 12 ns access, 5V supply, SOJ-32 package, but only commercial temp (0°C to +70°C) | Lacks industrial temperature qualification; not suitable for extended ambient operation | Acceptable for cost-sensitive commercial designs where thermal derating is verified |
Compared with CY62128EV30LL-45ZSXIT and AS6C4008-12ZIN, the 71024S12YGI uniquely delivers 12 ns performance at 5V with full industrial temperature support in the same SOJ-32 footprint-enabling drop-in replacement in legacy 5V industrial systems without voltage or thermal redesign.
Availability
71024S12YGI is available at Aetrix Electronics and suitable for industrial PLCs, legacy communication gateways, embedded controller boot shadowing, and ruggedized test equipment requiring stable component supply across long product lifecycles.
Supply support for 71024S12YGI 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 71024S12YGI belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for pin-compatible replacement and long-term support in mission-critical 5V industrial control and instrumentation systems.
FAQ
What is the maximum clock frequency supported by the 71024S12YGI?
The 71024S12YGI is a fully static asynchronous SRAM and does not use a clock signal. Its maximum effective throughput is determined by its 12 ns read cycle time (tRC), enabling up to 83.3 million random reads per second. Timing is governed solely by address setup, chip select, and output enable delays-not by any internal or external clock.
Does the 71024S12YGI require refresh circuitry or periodic memory maintenance?
No, the 71024S12YGI requires no refresh circuitry or periodic maintenance. As a static RAM, it retains data indefinitely as long as power is applied and inputs remain within specification. This eliminates complexity in systems where deterministic timing and zero-latency access are critical-such as real-time control loops using the 71024S12YGI.
Can the 71024S12YGI operate reliably at –40°C ambient temperature?
Yes, the 71024S12YGI is fully specified and tested for industrial temperature operation from –40°C to +85°C. All AC and DC parameters-including 12 ns access time, 10 mA ISB1 standby current, and TTL-compatible I/O thresholds-are guaranteed across this full range, making the 71024S12YGI suitable for deployment in unheated outdoor or factory-floor environments.
What package type and lead finish does the 71024S12YGI use?
The 71024S12YGI uses a 32-pin Plastic SOJ (Small Outline J-lead) package with 400-mil body width (PBG32). It features lead-free, RoHS-compliant terminations and is qualified for both through-hole insertion and infrared reflow soldering per J-STD-020 standards.
How does the dual chip select (CS1/CS2) architecture of the 71024S12YGI improve system design?
The dual CS architecture (CS1 active-low, CS2 active-high) allows flexible memory decoding without external logic gates. For example, CS1 can be tied to a CPU address line while CS2 connects to a chip-select decoder output-enabling multi-bank expansion or selective peripheral isolation. This reduces board space and improves timing predictability compared to single-CS SRAMs requiring additional gating, directly benefiting designs using the 71024S12YGI.
71024S12YGI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-BSOJ (0.400", 10.16mm Width)
- Packaging:
- Tube
- 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:
- 12ns
- Access Time:
- 12 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
71024S12YGI FAQ
1.How can I place an order for 71024S12YGI through Aetrix?
Please submit a Request for Quotation (RFQ) for 71024S12YGI 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 71024S12YGI reliable?
The price and inventory of 71024S12YGI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71024S12YGI is usually 5 days.
3.What payment methods are accepted for 71024S12YGI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71024S12YGI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71024S12YGI?
71024S12YGI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71024S12YGI 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 71024S12YGI?
For technical support, including 71024S12YGI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71024S12YGI requirements.
6.How does Aetrix verify that 71024S12YGI is sourced from the original manufacturer or authorized distributors?
All 71024S12YGI 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 71024S12YGI meets industry standards.
7.What is the process for return or replacement of 71024S12YGI?
All 71024S12YGI units undergo pre-shipment inspection (PSI). If there is an issue with 71024S12YGI, 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 71024S12YGI part is unused and in its original packaging.
Return procedure for 71024S12YGI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71024S12YGI Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
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24LC01BT-I/OT
Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
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AT24C04C-SSHM-T
Microchip Technology
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24LC01BT-I/SN
Microchip Technology
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24AA02UIDT-I/OT
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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