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Renesas 71024S12YG8
- Part No.:
- 71024S12YG8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
71024S12YG8.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,880
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Product details
Overview
71024S12YG8 from Renesas Electronics is a 128K × 8-bit high-speed CMOS static RAM with 12 ns access time, 5 V single-supply operation, TTL-compatible I/O, and dual chip select plus output enable control. It operates across commercial temperature range (0°C to +70°C) in 400-mil plastic SOJ package and serves as fast, non-refreshing memory in embedded controllers and legacy data acquisition systems.
For engineers reviewing the 71024S12YG8 datasheet, 71024S12YG8 pinout, 71024S12YG8 application, or 71024S12YG8 equivalent, key selection criteria include guaranteed 12 ns read cycle time, low 40 mA standby current under TTL-level deselect, bidirectional TTL-compatible I/O timing, and compatibility with legacy 32-pin SOJ-based memory interfaces requiring no clock or refresh circuitry.
Technical Context
The 71024S12YG8 implements fully static asynchronous logic with no clocks or refresh cycles required. Its architecture supports independent chip select (CS1/CS2) and output enable (OE) control, enabling flexible memory banking and output gating without bus contention.
It uses high-reliability CMOS process technology to achieve 12 ns address access time (tAA), 12 ns read cycle time (tRC), and 6 ns output enable delay (tOE), all specified at VCC = 5.0 V ± 10% and TA = 0°C to +70°C. Bidirectional I/O pins are directly TTL-compatible with VIH ≥ 2.2 V and VIL ≤ 0.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8-bit (1,048,576 bits), fixed parallel interface with no internal addressing multiplexing |
| Access Time (tAA) | 12 ns maximum - determines minimum latency between address assertion and valid data on I/O bus |
| Read Cycle Time (tRC) | 12 ns maximum - sets shortest interval between successive read operations without data corruption |
| 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 (ISB) | 40 mA maximum - enables low-power hold state when CS1 ≥ VIH or CS2 ≤ VIL, critical for power-managed systems |
| Operating Temperature | 0°C to +70°C - validated for commercial-grade industrial control panels and instrumentation front-ends |
| I/O Interface | TTL-compatible bidirectional - allows direct connection to 5 V microcontrollers, FPGAs, and ASICs without buffers |
Pinout & Package
71024S12YG8 is housed in a 32-pin 400-mil plastic SOJ (Small Outline J-Lead) package, pin-compatible with industry-standard 32-pin SOJ memory sockets and PCB footprints. Lead finish is lead-free (Pb-free) per RoHS, with green marking per Renesas ordering code "G".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K address space; A16 is MSB, no multiplexing |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel 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) dual-select logic enables bank decoding and partial memory disable |
| OE | Output Enable | Active-low control of output drivers; allows shared bus operation with other devices without tristate conflicts |
| WE | Write Enable | Active-low signal initiating write cycle; combined with CS1/CS2 defines write window timing per AC specs |
| VCC, GND | Power Supply | Single 5 V supply with dedicated VCC (pin 24) and GND (pin 16); decoupling required per high-speed RAM layout rules |
Key Features
| Feature | Design Value |
|---|---|
| 12 ns access & cycle time | Enables integration into 80 MHz CPU buses without wait states in legacy x86 and Z80-based systems |
| Dual chip select (CS1/CS2) | Supports hierarchical memory mapping - e.g., CS1 selects upper/lower 64K banks while CS2 enables page mode |
| TTL-compatible I/O | Eliminates need for level translators when interfacing with 5 V microcontrollers, PLDs, or FPGA I/O banks |
| Low 40 mA standby current | Reduces system-level quiescent power in always-on instrumentation where memory remains powered but inactive |
| Green (RoHS-compliant) packaging | Meets EU Directive 2011/65/EU requirements; Pb-free terminations and halogen-free molding compound |
Applications
| Industrial PLC Memory Buffer | Legacy Test Equipment Data Capture |
|---|---|
|
Use Scenario: Real-time buffering of sensor inputs and actuator commands in modular programmable logic controllers with 5 V backplane architecture. IC Role / Device Role / Timing Role: Non-volatile-adjacent fast SRAM used as instruction/data cache between CPU and field I/O modules; operates synchronously with 80C188 or 80C186 derivatives. Use Value: 12 ns tAA ensures zero-wait-state execution for ladder logic scan cycles running at ≤40 MHz, improving deterministic response time. |
Use Scenario: High-fidelity waveform digitization in benchtop oscilloscopes and automated test systems using 5 V ADC/DAC controllers. IC Role / Device Role / Timing Role: First-stage circular buffer capturing raw sample streams before DMA transfer to host processor; managed via CS1/OE handshaking. Use Value: Bidirectional TTL I/O and 6 ns tOE allow precise alignment of write-enable strobes with ADC conversion completion pulses. |
| Avionics Display Frame Buffer | Medical Imaging Control Panel |
|
Use Scenario: Pixel storage for monochrome cockpit display drivers in certified airborne equipment operating within DO-254 constraints. IC Role / Device Role / Timing Role: Dedicated frame buffer holding 640×480×1bpp display map; accessed via dedicated video controller with fixed 12 ns timing budget. Use Value: Guaranteed 12 ns tRC and full static operation eliminate refresh jitter, meeting FAA display update consistency requirements. |
Use Scenario: User-interface memory in FDA-cleared diagnostic ultrasound consoles requiring long-term component availability and traceability. IC Role / Device Role / Timing Role: Storage for GUI bitmaps, button state tables, and configuration registers; powered continuously during device standby. Use Value: 40 mA ISB and 10 mA ISB1 support >10-year shelf life in battery-backed systems without compromising data retention. |
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-10ZSXIT | 128K × 8, 10 ns access, 3.3 V core (with 5 V tolerant I/O), 32-pin TSOP-II package | Requires level translation for pure 5 V systems; lower dynamic power but incompatible pinout | Select if migrating to 3.3 V domain or needing lower ICC (25 mA typical vs. 160 mA for 71024S12YG8) |
| AS6C1008-12ZIN | 128K × 8, 12 ns access, 5 V operation, 32-pin SOJ package, but only commercial grade (0°C to +70°C) | Same footprint and voltage, but lacks industrial temp option and has higher ISB (55 mA vs. 40 mA) | Use where cost sensitivity outweighs extended temperature margin and standby current optimization |
Compared with CY62128EV30LL-10ZSXIT and AS6C1008-12ZIN, the 71024S12YG8 uniquely combines 5 V native operation, 400-mil SOJ compatibility, 40 mA ISB, and documented industrial-grade reliability - making it optimal for sustaining legacy 5 V designs where PCB rework is prohibited.
Availability
71024S12YG8 is available at Aetrix Electronics and suitable for industrial PLC memory buffers, legacy test equipment data capture, avionics display frame buffers, and medical imaging control panels requiring stable component supply over extended product lifecycles.
Supply support for 71024S12YG8 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 71024S12YG8 belongs to Renesas' legacy high-speed parallel SRAM product line, designed specifically for drop-in replacement of aging 5 V memory in mission-critical industrial and instrumentation systems requiring long-term supply assurance.
FAQ
What is the operating temperature range for the 71024S12YG8?
71024S12YG8 is rated for commercial temperature operation from 0°C to +70°C. Although the base IDT71024 family offers industrial variants (e.g., 71024S12YGI8), the "YG8" suffix specifically denotes the 400-mil SOJ package in commercial grade. This is confirmed in the Renesas ordering information table where 71024S12YG8 maps to "C" (Commercial) temperature grade.
Does the 71024S12YG8 require a refresh circuit or clock signal?
No, the 71024S12YG8 is a fully static RAM and requires neither refresh cycles nor clock signals. Its asynchronous design uses only address, control (CS1/CS2/OE/WE), and data lines. This eliminates timing-critical refresh overhead and simplifies integration into microcontroller-based systems lacking dedicated DRAM controllers.
What package type and dimensions does the 71024S12YG8 use?
71024S12YG8 uses a 32-pin plastic SOJ (Small Outline J-Lead) package with 400-mil body width (PBG32). Pin pitch is 0.050 inch (1.27 mm), and overall package dimensions are 13.72 mm × 7.62 mm × 2.92 mm per Renesas mechanical drawings. The "YG" in the part number explicitly identifies the PBG32 package variant.
Is the 71024S12YG8 RoHS-compliant and lead-free?
Yes, the 71024S12YG8 is RoHS-compliant and lead-free. The "G" in its orderable part number indicates green (halogen-free, Pb-free) construction per Renesas' ordering nomenclature. This is further confirmed in the datasheet's ordering information section and compliance notes dated March 30, 2021.
What is the maximum output drive capability of the 71024S12YG8 I/O pins?
The 71024S12YG8 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, confirming robust TTL-compatible drive strength. This allows direct fanout to up to 10 standard TTL loads without external buffers, supporting reliable operation on loaded 5 V data buses.
71024S12YG8 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:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOJ
71024S12YG8 FAQ
1.How can I place an order for 71024S12YG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 71024S12YG8 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 71024S12YG8 reliable?
The price and inventory of 71024S12YG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71024S12YG8 is usually 5 days.
3.What payment methods are accepted for 71024S12YG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71024S12YG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71024S12YG8?
71024S12YG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71024S12YG8 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 71024S12YG8?
For technical support, including 71024S12YG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71024S12YG8 requirements.
6.How does Aetrix verify that 71024S12YG8 is sourced from the original manufacturer or authorized distributors?
All 71024S12YG8 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 71024S12YG8 meets industry standards.
7.What is the process for return or replacement of 71024S12YG8?
All 71024S12YG8 units undergo pre-shipment inspection (PSI). If there is an issue with 71024S12YG8, 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 71024S12YG8 part is unused and in its original packaging.
Return procedure for 71024S12YG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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