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Renesas UPD431000AGW-80Y
- Part No.:
- UPD431000AGW-80Y
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- -
- Datasheet:
-
UPD431000AGW-80Y.pdf
- Description:
- MEMORY / SRAM
- Quantity:
- Payment:
- Shipping:
Inventory:39,652
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Product details
Overview
UPD431000AGW-80Y from Renesas Electronics is a 131,072-word × 8-bit (1 Mbit) CMOS static RAM in 32-pin plastic SOP package, featuring 80 ns maximum access time, 2.7–5.5 V operating supply voltage, and dual chip enable (/CE1, CE2) for memory expansion. It supports battery backup operation and data retention down to 2.0 V, serving as fast, low-power volatile storage in industrial control panels and legacy embedded instrumentation.
For engineers reviewing the UPD431000AGW-80Y datasheet, UPD431000AGW-80Y pinout, UPD431000AGW-80Y application, or UPD431000AGW-80Y equivalent, key selection criteria include its 8-bit parallel interface, dual CE architecture for banked memory mapping, 80 ns read timing under 5 V, and compatibility with 3.3 V/5 V mixed-signal systems requiring nonvolatile data hold during power-down.
Technical Context
The UPD431000AGW-80Y implements a full CMOS SRAM core with address buffer, row/column decoders, sense amplifiers, and bidirectional I/O controllers. Its two independent chip enables (/CE1 active-low, CE2 active-high) allow hierarchical memory decoding without external logic, enabling seamless expansion beyond 128K words.
It supports three distinct operational modes: active read/write (with /WE and /OE control), standby (low-current deselection via either CE), and data retention (sub-2.0 V VCC with /CE1 or CE2 asserted). Timing is fully static-no refresh required-and output enable (/OE) provides bus contention control independent of chip select.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory organization | 131,072 × 8 bits - delivers byte-aligned parallel access for 8-bit microcontrollers and legacy bus architectures |
| Access time (tAA) | 80 ns max at VCC = 4.5–5.5 V - ensures compatibility with 12.5 MHz system clocks in timing-critical control loops |
| Supply voltage range | 2.7 V to 5.5 V - supports direct interfacing with both 3.3 V logic and legacy 5 V systems without level shifters |
| Data retention voltage | 2.0 V min - enables reliable memory hold during brown-out conditions using small backup batteries or supercapacitors |
| Standby current (ISB1) | 1 μA max at VCC ≤ 3.3 V - minimizes power draw in always-on monitoring subsystems between wake events |
| Pin count & package | 32-pin plastic SOP (13.34 mm) - surface-mount compatible with standard reflow profiles and manual repair accessibility |
| Operating temperature | 0 °C to +70 °C - rated for commercial/industrial indoor environments including office automation and test equipment |
Pinout & Package
UPD431000AGW-80Y uses a 32-pin plastic SOP (Small Outline Package) with 13.34 mm body width and standard 0.8 mm lead pitch. Pin 1 index is marked by a notch or dot on the package top surface per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connection - unused pad; must remain floating or grounded per layout guidelines |
| 2–12, 14–16, 18–21, 23–26, 28–31 | A0–A16 | 17-bit address inputs - support full 131,072-word addressing with no external address latching |
| 13, 22, 27, 32 | I/O1–I/O8 | 8-bit bidirectional data bus - shares pins for read and write; tri-stated when /OE = low or /CE1 = high |
| 17 | VCC | Positive supply - accepts 2.7–5.5 V; requires local 100 nF ceramic decoupling adjacent to pin |
| 29 | GND | Ground reference - connects to system ground plane; critical for noise immunity in high-speed reads |
| 28 | /CE1 | Chip enable 1 (active-low) - primary selection signal; must be low with CE2 high and /WE low for write |
| 30 | CE2 | Chip enable 2 (active-high) - secondary enable; used with /CE1 for multi-chip decode or bank switching |
| 25 | /WE | Write enable (active-low) - controls direction of I/O bus; high = read mode, low = write mode |
| 24 | /OE | Output enable (active-low) - gates output drivers independently of chip select for bus sharing |
Key Features
| Feature | Design Value |
|---|---|
| Dual chip enable (/CE1 and CE2) | Enables seamless memory expansion up to multiple megabits using only native signals-no glue logic required |
| Low-voltage data retention | Maintains stored data at VCC ≥ 2.0 V, allowing integration with coin-cell or supercapacitor backup without dedicated retention ICs |
| Independent /OE control | Permits output disabling while chip remains selected-essential for shared data buses with multiple peripherals |
| Static operation | Zero-refresh design eliminates timing-critical refresh cycles and associated CPU overhead in real-time systems |
| Wide supply range (2.7–5.5 V) | Interoperates across 3.3 V and 5 V domains, reducing need for voltage translators in mixed-supply boards |
Applications
| Industrial PLC Data Buffer | Legacy Test Equipment Memory |
|---|---|
Use Scenario: Stores real-time sensor logs and configuration parameters in programmable logic controllers during mains power interruption. IC Role / Device Role / Timing Role: Volatile high-speed scratchpad memory with battery-backed retention for last-known-state recovery. Use Value: Enables deterministic restart after brownouts using only 2.0 V backup-no EEPROM wear leveling or write latency penalties. |
Use Scenario: Holds waveform capture buffers and calibration tables in benchtop oscilloscopes and signal generators. IC Role / Device Role / Timing Role: Parallel-access static RAM interfaced directly to FPGA or microcontroller address/data buses. Use Value: 80 ns access time supports 12.5 MHz sampling control loops; 32-pin SOP fits dense instrument PCB layouts. |
| Medical Diagnostic Display Cache | Point-of-Sale Terminal Firmware Store |
Use Scenario: Caches DICOM image tiles and UI assets in portable ultrasound or X-ray display units. IC Role / Device Role / Timing Role: High-reliability byte-wide memory supporting burst reads for graphics rendering pipelines. Use Value: 1 μA standby current extends battery life between imaging sessions; 0–70 °C rating covers clinical ambient ranges. |
Use Scenario: Stores transaction history and localized language strings in retail terminals with intermittent AC power. IC Role / Device Role / Timing Role: Non-refresh volatile memory mapped into microcontroller's external bus interface. Use Value: Dual CE pins simplify bank-switching for firmware updates without memory remapping logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY62128ELL-70ZSXI | 512K × 8, 70 ns access, 3.3 V only, 32-pin TSOP | Half the density; no 5 V support; smaller footprint but no SOP option | Choose for 3.3 V-only designs needing lower height or higher density per mm² |
| AS6C1008-70SCN | 128K × 8, 70 ns access, 2.7–5.5 V, 32-pin SOP | Same package and voltage range but 1K-word smaller; slightly faster access | Choose when exact 128K × 8 capacity suffices and 70 ns timing is mandatory |
Compared with CY62128ELL-70ZSXI and AS6C1008-70SCN, the UPD431000AGW-80Y uniquely combines 1 Mbit density, 80 ns timing, full 2.7–5.5 V operation, and 32-pin SOP packaging-making it irreplaceable in legacy 5 V systems requiring >128K-word buffer space without redesigning board layout or power rails.
Availability
UPD431000AGW-80Y is available at Aetrix Electronics and suitable for industrial control panels, legacy test equipment, medical diagnostic displays, and point-of-sale terminals requiring stable component supply across extended product lifecycles.
Supply support for UPD431000AGW-80Y 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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and memory solutions for industrial and automotive markets.
The UPD431000A series was designed for cost-sensitive, long-lifecycle embedded systems requiring reliable, no-refresh volatile memory with flexible voltage operation and straightforward parallel bus interfacing.
FAQ
What is the maximum access time specification for UPD431000AGW-80Y?
The UPD431000AGW-80Y has a maximum address access time (tAA) of 80 ns when operated at VCC = 4.5–5.5 V. This value is guaranteed across the full 0 °C to +70 °C operating temperature range and defines the minimum time from valid address assertion to stable data output during read cycles. The "80" in the part number directly denotes this 80 ns speed grade.
Does UPD431000AGW-80Y support true 3.3 V operation?
Yes, UPD431000AGW-80Y supports full 3.3 V operation as part of its 2.7–5.5 V supply range. At VCC = 3.3 V, it maintains functional timing (though access time degrades to ≤100 ns per B-version specs), meets all DC input/output thresholds, and draws ≤30 mA active current. It is not a 5 V-only part and requires no level shifting when interfaced with 3.3 V logic.
How does data retention work on UPD431000AGW-80Y?
UPD431000AGW-80Y enters data retention mode when either /CE1 ≥ VCC − 0.2 V and CE2 ≥ VCC − 0.2 V, or CE2 ≤ 0.2 V, with VCC held ≥2.0 V. In this state, standby current drops to ≤1 μA (at VCC ≤ 3.3 V), preserving stored data indefinitely without clock or refresh. Address, data, and control lines may float or be high-impedance.
Is UPD431000AGW-80Y pin-compatible with other variants in the UPD431000A family?
Yes, all UPD431000A variants-including UPD431000AGW-80Y, UPD431000AGW-70L, and UPD431000AGW-B12-share identical 32-pin SOP pinouts and signal definitions. Differences are limited to speed grade, supply voltage range, and internal timing parameters; no PCB layout change is needed when substituting within the same package type (GW = SOP).
What is the function of the NC pin on UPD431000AGW-80Y?
Pin 1 of UPD431000AGW-80Y is marked NC (No Connection) and must remain unconnected-neither tied to VCC nor GND. It is an unused bond pad with no internal circuitry. Leaving it floating avoids unintended coupling; grounding or powering it violates the device's absolute maximum ratings and may cause latch-up or parametric failure.
UPD431000AGW-80Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- -
- Memory Format:
- -
- Technology:
- -
- Memory Size:
- -
- Memory Organization:
- -
- Memory Interface:
- -
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
UPD431000AGW-80Y FAQ
1.How can I place an order for UPD431000AGW-80Y through Aetrix?
Please submit a Request for Quotation (RFQ) for UPD431000AGW-80Y 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 UPD431000AGW-80Y reliable?
The price and inventory of UPD431000AGW-80Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPD431000AGW-80Y is usually 5 days.
3.What payment methods are accepted for UPD431000AGW-80Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPD431000AGW-80Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPD431000AGW-80Y?
UPD431000AGW-80Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPD431000AGW-80Y 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 UPD431000AGW-80Y?
For technical support, including UPD431000AGW-80Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPD431000AGW-80Y requirements.
6.How does Aetrix verify that UPD431000AGW-80Y is sourced from the original manufacturer or authorized distributors?
All UPD431000AGW-80Y 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 UPD431000AGW-80Y meets industry standards.
7.What is the process for return or replacement of UPD431000AGW-80Y?
All UPD431000AGW-80Y units undergo pre-shipment inspection (PSI). If there is an issue with UPD431000AGW-80Y, 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 UPD431000AGW-80Y part is unused and in its original packaging.
Return procedure for UPD431000AGW-80Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UPD431000AGW-80Y Tags
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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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