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Renesas 71V256SA12PZGI8
- Part No.:
- 71V256SA12PZGI8
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 28-TSSOP (0.465", 11.80mm Width)
- Datasheet:
-
71V256SA12PZGI8.pdf
- Description:
- IC SRAM 256KBIT PARALLEL 28TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,586
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Product details
Overview
71V256SA12PZGI8 from Renesas Electronics is a 256K (32K × 8-bit) high-speed CMOS static RAM with 12 ns access time, industrial temperature range (–40°C to +85°C), single 3.3V ±0.3V supply, and LVTTL-compatible I/O - designed for secondary cache in 3.3V embedded and desktop systems requiring low-power standby operation.
For engineers reviewing the 71V256SA12PZGI8 datasheet, 71V256SA12PZGI8 pinout, 71V256SA12PZGI8 application, or 71V256SA12PZGI8 equivalent, this SRAM delivers verified 12 ns read cycle time, 2 mA full-standby current, TSOP Type I (PZG28) package compatibility, and deterministic TTL/CMOS-level control timing under industrial thermal conditions.
Technical Context
The 71V256SA12PZGI8 implements asynchronous SRAM architecture with independent address decoding and bidirectional data I/O lines. Its control logic uses three active-low enable signals - CS, WE, and OE - to manage read/write cycles and high-impedance output states without internal clocks or refresh circuitry.
It supports two standby modes: TTL-level standby (ISB ≤ 20 mA) when CS = VIH, and full CMOS-level standby (ISB1 ≤ 2 mA) when CS > VHC and f = 0. Power consumption is guaranteed <6.6 mW in full standby, enabling battery-sensitive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32K × 8-bit (262,144 bits), byte-wide parallel interface |
| Access Time (tAA) | 12 ns maximum - enables direct interfacing with 83 MHz bus systems |
| Supply Voltage | 3.3V ±0.3V - compatible with standard 3.3V logic domains and LVTTL I/O |
| Standby Current (ISB1) | 2 mA maximum at full CMOS standby - extends battery life in portable designs |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and computing environments |
| Package | 28-pin TSOP Type I (PZG28), 8.1 mm × 13.4 mm footprint - space-efficient surface-mount layout |
| I/O Compatibility | LVTTL - ensures interoperability with 3.3V microprocessors and FPGAs without level-shifting |
Pinout & Package
71V256SA12PZGI8 is housed in a 28-pin TSOP Type I (PZG28) package with 0.55 mm lead pitch and JEDEC-standard pinout. The package supports reflow soldering and meets RoHS-compliant green material requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit address bus supporting 32K word selection; CMOS-level inputs with ≤2 µA leakage |
| I/O0–I/O7 | Bidirectional Data Lines | 8-bit parallel data path; tri-state capable with tOHZ ≤ 10 ns and VOL ≤ 0.4 V at 8 mA sink |
| CS | Chip Select | Active-low enable controlling device activation and standby entry; drives ISB1 ≤ 2 mA when held >VHC |
| WE | Write Enable | Active-low signal defining write cycle boundaries; tWP ≥ 9 ns required for reliable data capture |
| OE | Output Enable | Active-low control for output drivers; tOE ≤ 6 ns ensures fast read response after enable assertion |
| VCC | Power Supply | 3.3V ±0.3V primary supply; decoupling recommended within 10 mm of pin per datasheet layout guidelines |
| GND | Ground Reference | Common return path for all I/O and core logic; separate ground plane recommended for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| 12 ns access time at 3.3V | Enables use as secondary cache in 3.3V CPU subsystems without wait states |
| 2 mA full-standby current | Reduces system power budget during idle periods in portable or fanless industrial controllers |
| Industrial temperature support | Validated operation from –40°C to +85°C - suitable for uncontrolled environmental deployments |
| TSOP Type I (PZG28) packaging | Enables high-density PCB layouts with automated SMT assembly compatibility |
| LVTTL-compatible signaling | Eliminates need for external level shifters when interfacing with 3.3V microcontrollers and SoCs |
Applications
| Industrial PLC Memory Buffer | Embedded Network Router Cache |
|---|---|
|
Use Scenario: Real-time I/O data buffering in programmable logic controllers operating in factory-floor environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Asynchronous SRAM providing non-refreshed, low-latency storage for cyclic process data exchange between CPU and fieldbus interfaces. Use Value: 12 ns access time ensures deterministic response to scan-cycle interrupts; industrial temp rating guarantees uptime across seasonal thermal variations. |
Use Scenario: Packet header and lookup table caching in edge network routers handling Gigabit Ethernet traffic. IC Role / Device Role / Timing Role: Byte-wide cache memory serving as fast-access buffer between packet processor and MAC layer, synchronized via CS/OE handshaking. Use Value: LVTTL compatibility allows direct connection to 3.3V switch fabric ASICs; 2 mA standby current reduces thermal load in compact fanless enclosures. |
| Medical Imaging Control Module | Ruggedized Handheld Terminal |
|
Use Scenario: Temporary frame metadata storage in portable ultrasound or X-ray control units requiring certified reliability and low EMI emissions. IC Role / Device Role / Timing Role: Static RAM holding real-time acquisition parameters and calibration tables accessed by ARM-based controller during imaging sequences. Use Value: Full CMOS standby mode (<2 mA) preserves battery charge between imaging sessions; TSOP package minimizes board area in constrained medical housing. |
Use Scenario: Application code and configuration storage in warehouse handheld terminals exposed to vibration, dust, and intermittent power. IC Role / Device Role / Timing Role: Nonvolatile-supporting volatile memory used for fast boot-time initialization and runtime variable storage in Linux-based terminal OS. Use Value: Industrial temperature range ensures stable operation during outdoor winter deployment; 3.3V-only supply simplifies PMIC design in single-rail battery systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62256ELL-12ZXI | Same 32K × 8 organization and 12 ns speed, but 5V-tolerant I/O and wider voltage range (4.5–5.5V); no 3.3V-native LVTTL support | Requires level translation when used with 3.3V processors; suited for legacy 5V industrial backplanes | Select only if system already uses 5V logic rails and backward compatibility is mandatory |
| AS6C4008-12ZIN | Identical 32K × 8, 12 ns, 3.3V supply, and industrial temp rating; lower ISB1 (1.5 mA vs. 2 mA) but larger 32-pin SOP package | Higher pin count increases PCB area and routing complexity; not drop-in compatible with PZG28 footprint | Consider when ultra-low standby current outweighs board space constraints and rework cost |
Compared with CY62256ELL-12ZXI and AS6C4008-12ZIN, the 71V256SA12PZGI8 uniquely combines TSOP Type I packaging, verified 2 mA full-standby performance, and native LVTTL signaling - making it optimal for space-constrained, battery-aware 3.3V embedded systems where pinout compatibility and thermal robustness are critical.
Availability
71V256SA12PZGI8 is available at Aetrix Electronics and suitable for industrial PLC memory buffers, embedded network router cache, and ruggedized handheld terminal designs requiring stable component supply across extended product lifecycles.
Supply support for 71V256SA12PZGI8 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 is a global semiconductor leader delivering microcontrollers, analog, power, and memory solutions for automotive, industrial, and infrastructure markets.
The 71V256SA series was developed as a high-reliability, low-power asynchronous SRAM family targeting 3.3V secondary cache and buffer applications in industrial and embedded computing platforms.
FAQ
What is the operating temperature range for the 71V256SA12PZGI8?
The 71V256SA12PZGI8 is rated for industrial temperature operation from –40°C to +85°C. This specification is validated per Renesas' qualification standards and applies to all DC and AC electrical parameters in the datasheet under 3.3V ±0.3V supply conditions. No derating is required within this range.
Does the 71V256SA12PZGI8 require a separate 5V supply or level translators?
No - the 71V256SA12PZGI8 operates exclusively from a single 3.3V ±0.3V supply and features LVTTL-compatible inputs and outputs. It interfaces directly with 3.3V microprocessors, FPGAs, and ASICs without external level-shifting circuitry.
How does standby power consumption behave on the 71V256SA12PZGI8?
The 71V256SA12PZGI8 offers two standby modes: TTL-level standby (ISB ≤ 20 mA) when CS = VIH, and full CMOS-level standby (ISB1 ≤ 2 mA) when CS > VHC and no inputs toggle. In full standby, total power dissipation is guaranteed <6.6 mW, ideal for battery-backed systems.
Is the 71V256SA12PZGI8 pin-compatible with other speed grades in the same family?
Yes - all 71V256SA variants (12 ns, 15 ns, 20 ns) share identical pinouts and package dimensions in both SOJ (PJG28) and TSOP (PZG28) configurations. The 71V256SA12PZGI8 can be substituted with 71V256SA15PZGI8 or 71V256SA20PZGI8 without PCB changes, though timing margins must be re-verified.
What package type does the 71V256SA12PZGI8 use, and is it RoHS-compliant?
The 71V256SA12PZGI8 uses a 28-pin TSOP Type I (PZG28) package with 0.55 mm lead pitch. It is a green, RoHS-compliant device per Renesas' ordering information - indicated by the "G" suffix - and contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE.
71V256SA12PZGI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-TSSOP (0.465", 11.80mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSOP
71V256SA12PZGI8 FAQ
1.How can I place an order for 71V256SA12PZGI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 71V256SA12PZGI8 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 71V256SA12PZGI8 reliable?
The price and inventory of 71V256SA12PZGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 71V256SA12PZGI8 is usually 5 days.
3.What payment methods are accepted for 71V256SA12PZGI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 71V256SA12PZGI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 71V256SA12PZGI8?
71V256SA12PZGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 71V256SA12PZGI8 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 71V256SA12PZGI8?
For technical support, including 71V256SA12PZGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 71V256SA12PZGI8 requirements.
6.How does Aetrix verify that 71V256SA12PZGI8 is sourced from the original manufacturer or authorized distributors?
All 71V256SA12PZGI8 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 71V256SA12PZGI8 meets industry standards.
7.What is the process for return or replacement of 71V256SA12PZGI8?
All 71V256SA12PZGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 71V256SA12PZGI8, 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 71V256SA12PZGI8 part is unused and in its original packaging.
Return procedure for 71V256SA12PZGI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
71V256SA12PZGI8 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
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AT24CS02-SSHM-T
Microchip Technology
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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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