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Renesas 71V124SA12YG
- Part No.:
- 71V124SA12YG
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
71V124SA12YG.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:2,940
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Product details
Overview
71V124SA12YG from Renesas Electronics is a 128K × 8-bit (1 Mbit), 3.3 V CMOS static RAM with 12 ns access time, JEDEC center-power/ground pinout, LVTTL-compatible I/O, and industrial-grade temperature support (–40°C to +85°C). It operates asynchronously without clocks or refresh, delivering fast read/write cycles in embedded controllers and network interface buffers.
For engineers reviewing the 71V124SA12YG datasheet, 71V124SA12YG pinout, 71V124SA12YG application, or 71V124SA12YG equivalent, key selection criteria include tAA ≤ 12 ns, tRC = 12 ns, single 3.3 V supply operation, SOJ-32 (400-mil) package compatibility, and industrial temperature qualification for ruggedized systems.
Technical Context
The 71V124SA12YG implements fully static asynchronous memory architecture with independent chip select (CS) and output enable (OE) control, enabling precise bus timing in multi-chip systems. Its center-power/ground pinout reduces simultaneous switching noise and improves signal integrity in high-density PCB layouts.
It supports two distinct write control modes-WE-controlled and CS-controlled-with guaranteed tWP ≥ 8 ns and tDW ≥ 6 ns, and features low-impedance outputs (VOH ≥ 2.4 V at –4 mA, VOL ≤ 0.4 V at 8 mA) compatible with LVTTL logic families across commercial and industrial temperature ranges.
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) | 12 ns max; determines minimum address-to-data valid delay in read operations under worst-case voltage/temperature conditions. |
| Read Cycle Time (tRC) | 12 ns max; defines shortest interval between successive read operations on same device. |
| Supply Voltage | 3.15 V to 3.6 V; ensures stable LVTTL-compatible operation across industrial temperature range without level-shifting. |
| Operating Temperature | –40°C to +85°C; qualified for deployment in automotive control units, industrial PLCs, and telecom line cards. |
| Package | 32-pin 400-mil Plastic SOJ (PBG32); surface-mount compatible with standard reflow profiles and legacy socket-based test fixtures. |
| Power Dissipation | ICC ≤ 140 mA (max) at fMAX; ISB ≤ 40 mA (dynamic standby); enables low-noise power rail design with minimal thermal derating. |
Pinout & Package
71V124SA12YG is housed in a 32-pin 400-mil Plastic SOJ (PBG32) package with JEDEC-standard center-power/ground pinout-VDD on pins 13 & 20, GND on pins 14 & 19-to minimize ground bounce and supply noise during high-speed transitions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word decoding; no internal latching required. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit LVTTL-compatible data path; high-impedance state when CS or OE inactive. |
| CS | Chip Select | Active-low enable; controls device selection in multi-SRAM systems; tACS ≤ 12 ns. |
| OE | Output Enable | Active-low control of output drivers; enables shared-bus arbitration; tOE ≤ 6 ns. |
| WE | Write Enable | Active-low write strobe; initiates write cycle with tWP ≥ 8 ns; supports WE- or CS-controlled timing. |
| VDD | Supply Voltage | 3.3 V core supply; dual pins (13 & 20) reduce IR drop and improve decoupling effectiveness. |
| GND | Ground Reference | Signal and power return; dual pins (14 & 19) provide low-inductance path for switching currents. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC Center Power/Ground Pinout | Reduces simultaneous switching noise by 30–40% vs. corner-supply layouts, improving signal integrity in dense memory subsystems. |
| Single 3.3 V Supply Operation | Eliminates need for dual-voltage rails or level shifters, simplifying power architecture in LVTTL-based microcontroller systems. |
| Asynchronous Static Architecture | Requires no clocks, refresh cycles, or wait states-ideal for deterministic real-time control applications with strict timing budgets. |
| Low Standby Current (ISB1) | 10 µA max in full standby (CS high, no address/activity); enables ultra-low-power sleep modes in battery-backed systems. |
| LVTTL-Compatible I/O | VIH ≥ 2.0 V, VIL ≤ 0.8 V, VOH ≥ 2.4 V, VOL ≤ 0.4 V-ensures direct interface with FPGA I/O banks, MCU GPIOs, and ASIC memory controllers. |
Applications
| Industrial PLC Memory Buffer | Network Interface Packet Buffer |
|---|---|
|
Use Scenario: Storing real-time I/O status and control registers in programmable logic controllers operating in factory-floor environments with EMI and wide temperature swings. IC Role / Device Role / Timing Role: Asynchronous SRAM providing zero-wait-state data storage for cyclic scan execution; accessed via parallel bus from ARM Cortex-M7 or RISC-V MCU. Use Value: 12 ns tAA and –40°C to +85°C rating ensure deterministic response within 100 µs scan cycles, even under thermal stress or voltage droop. |
Use Scenario: Temporary packet buffering in Ethernet PHY/MAC interfaces for industrial switches handling time-sensitive traffic (e.g., TSN). IC Role / Device Role / Timing Role: Byte-wide SRAM acting as first-in-first-out (FIFO) buffer between MAC layer and physical transceiver, synchronized via discrete control signals. Use Value: Dual CS/OE control allows concurrent read/write arbitration without external logic; tCLZ ≤ 4 ns minimizes bus turnaround latency. |
| Medical Imaging Control Board | Avionics Display Frame Buffer |
|
Use Scenario: Holding configuration parameters and calibration tables in portable ultrasound or MRI control boards where radiation tolerance and long-term reliability are critical. IC Role / Device Role / Timing Role: Non-refreshing memory storing firmware-critical lookup tables and sensor compensation coefficients; accessed infrequently but with guaranteed timing. Use Value: Full standby current ≤ 10 µA extends battery life in portable units; green (RoHS-compliant) variant available per ordering code suffix 'G'. |
Use Scenario: Supporting rasterized display updates in cockpit multifunction displays requiring glitch-free frame rendering under vibration and thermal cycling. IC Role / Device Role / Timing Role: Dedicated SRAM frame buffer driven by graphics controller; isolated from main system bus to prevent display artifacts during CPU-intensive tasks. Use Value: Center-power/ground pinout suppresses noise coupling into analog video DAC paths; 32-pin SOJ fits constrained board space near display driver ICs. |
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-45ZSXI | 128K × 8-bit, 45 ns access, 3.3 V, TSOP-32; higher tAA limits maximum bus frequency to ~12 MHz vs. 71V124SA12YG's 83 MHz capability. | Targeted at cost-sensitive, lower-speed designs where timing margin is less critical than BOM cost. | Select when system clock rate ≤ 12 MHz and industrial temp support is required; verify SOJ-to-TSOP footprint adaptation. |
| AS6C1008-12TIN | 128K × 8-bit, 12 ns access, 3.3 V, TSOP-32; identical speed grade but lacks center-power/ground pinout and has higher ICC (165 mA vs. 140 mA). | Suitable for new designs prioritizing pinout flexibility over noise reduction; requires additional decoupling for clean signal integrity. | Choose if TSOP-32 footprint is preferred and board layout accommodates extra decoupling; confirm VDD/GND routing meets noise targets. |
Compared with CY62128EV30LL-45ZSXI and AS6C1008-12TIN, the 71V124SA12YG delivers superior noise immunity via its JEDEC center-power/ground layout and lower dynamic current-critical for high-reliability embedded systems where signal integrity and thermal management are tightly coupled.
Availability
71V124SA12YG is available at Aetrix Electronics and suitable for industrial PLCs, network interface buffers, medical imaging control boards, and avionics display frame buffers requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for 71V124SA12YG 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 71V124SA12YG belongs to Renesas' legacy high-speed CMOS SRAM product line, engineered for deterministic, low-latency memory access in real-time embedded systems where refresh-free operation and noise-resilient pinouts are essential.
FAQ
What is the maximum operating frequency supported by the 71V124SA12YG?
The 71V124SA12YG does not operate on a clock but supports a maximum effective bus frequency of approximately 83 MHz, derived from its 12 ns read cycle time (tRC). This enables single-cycle reads in systems with tight timing budgets, such as real-time control loops or packet processing engines where deterministic latency is mandatory.
Does the 71V124SA12YG require external refresh circuitry?
No, the 71V124SA12YG is a fully static RAM and requires no refresh cycles or clocks. Its CMOS latch-based memory cells retain data indefinitely as long as VDD is applied and CS remains active-making it ideal for applications like boot ROM shadowing or configuration storage where power loss resilience is critical.
Is the 71V124SA12YG pin-compatible with other speed grades in the 71V124SA family?
Yes, all 71V124SA variants-including 71V124SA10YG, 71V124SA12YG, and 71V124SA15YG-share identical 32-pin PBG32 SOJ pinouts and signal assignments. Speed grade differences affect only timing parameters (tAA, tRC, etc.), allowing drop-in replacement in existing layouts when performance margins permit.
What is the significance of the 'G' suffix in 71V124SA12YG?
The 'G' suffix in 71V124SA12YG indicates compliance with RoHS Directive 2011/65/EU and absence of restricted hazardous substances including lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE. This makes the 71V124SA12YG suitable for environmentally regulated industrial and medical equipment deployments.
Can the 71V124SA12YG be used with 5 V TTL logic interfaces?
No-the 71V124SA12YG is strictly LVTTL-compatible (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and rated for 3.3 V supply only (3.15–3.6 V). Direct connection to 5 V TTL outputs risks exceeding absolute maximum input voltage (VIN ≤ VDD + 0.5 V = 4.1 V) and may cause damage or unreliable operation; level translation is required.
71V124SA12YG 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:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOJ
71V124SA12YG FAQ
1.How can I place an order for 71V124SA12YG through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V124SA12YG 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 71V124SA12YG reliable?
The price and inventory of 71V124SA12YG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V124SA12YG is usually 5 days.
3.What payment methods are accepted for 71V124SA12YG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V124SA12YG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V124SA12YG?
71V124SA12YG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V124SA12YG 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 71V124SA12YG?
For technical support, including 71V124SA12YG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V124SA12YG requirements.
6.How does Aetrix verify that 71V124SA12YG is sourced from the original manufacturer or authorized distributors?
All 71V124SA12YG 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 71V124SA12YG meets industry standards.
7.What is the process for return or replacement of 71V124SA12YG?
All 71V124SA12YG units undergo pre-shipment inspection (PSI). If there is an issue with 71V124SA12YG, 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 71V124SA12YG part is unused and in its original packaging.
Return procedure for 71V124SA12YG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71V124SA12YG Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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