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Winbond Electronics Corporation W29GL256SL9T TR
- Part No.:
- W29GL256SL9T TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 56-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
W29GL256SL9T TR.pdf
- Description:
- IC FLASH 256MBIT PARALLEL 56TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,524
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Product details
Overview
W29GL256SL9T TR from Winbond is a 256-Mbit (32-MByte), x16 parallel NOR Flash memory with 3.0 V single-supply operation (2.7–3.6 V), 90 ns random access time, 15 ns page access time, and 128-kbyte uniform sector architecture. It supports Write Buffer Programming (up to 512 bytes), Enhanced Variable I/O (EVIO: 1.65 V to VCC), and CFI-compliant interface for embedded boot code storage in industrial controllers.
For engineers reviewing the W29GL256SL9T TR datasheet, W29GL256SL9T TR pinout, W29GL256SL9T TR application, or W29GL256SL9T TR equivalent, key selection criteria include sector protection granularity (128 kB), OTP security region (1024-byte lockable), suspend/resume capability for program/erase, and TSOP-56 package compatibility with legacy 3.3 V parallel bus designs.
Technical Context
The W29GL256SL9T TR implements a Command State Machine (CSM) and independent Write State Controller to manage asynchronous read/write, sector erase, and embedded algorithms without host intervention. Its EVIO feature decouples I/O voltage (1.65–VCC) from core VCC, enabling interoperability with mixed-voltage SoCs.
It uses 58 nm process technology and provides three status monitoring methods-Status Register, Data# Polling, and RY/#BY output-to confirm completion of internal operations like 256-word buffer programming or 128-kB sector erase. Sector protection includes volatile (DPB) and non-volatile (IPB/Lock Register) modes plus a dedicated 1024-byte OTP region split into two 512-byte lockable zones.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256 Mbit (32 MByte), organized as 2,097,152 words × 16 bits |
| Access Time | 90 ns random read; 15 ns page read - enables fast XIP execution from aligned 32-byte pages |
| Write Buffer Size | 256 words (512 bytes) - reduces effective programming time vs. single-word writes |
| Sector Architecture | 256 uniform 128-kByte sectors - simplifies firmware partitioning and OTA update management |
| Endurance & Retention | 100,000 program/erase cycles; 20-year data retention - suitable for long-life industrial deployments |
| Supply Voltage | VCC = 2.7–3.6 V; EVIO = 1.65–VCC - supports flexible I/O interfacing with 1.8 V or 3.3 V logic |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial ambient conditions |
Pinout & Package
W29GL256SL9T TR is packaged in a 56-pin TSOP (14 × 20 mm), compliant with standard JEDEC MO-142AC footprint. Pin functions are electrically defined per Table 5-1 of the datasheet and validated for direct replacement in legacy parallel Flash sockets.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A23 | Address Inputs | 24-bit address bus supporting full 32-MByte addressing with word-aligned boundaries |
| DQ0–DQ15 | Data I/O | x16 bidirectional data bus; supports byte-wide access via external masking if required |
| #CE | Chip Enable | Active-low chip select; enables device for read/write when asserted with #OE/#WE |
| #OE | Output Enable | Controls output buffer tri-state; allows shared data bus with multiple devices |
| #WE | Write Enable | Controls write latching; combined with #CE/#OE to define bus cycle timing |
| #WP | Hardware Write Protect | Locks top/bottom 128-kB sectors permanently when pulled low at power-up |
| RY/#BY | Ready/Busy Output | Open-drain status indicator; LOW during internal algorithms (erase/program), HIGH-Z when ready |
| EVIO | I/O Supply | Dedicated power pin for I/O drivers; sets valid input threshold and output swing independently of VCC |
Key Features
| Feature | Design Value |
|---|---|
| Write Buffer Programming | Enables 512-byte burst writes with single command - cuts typical firmware update time by >70% vs. word-by-word |
| Enhanced Variable I/O (EVIO) | Allows 1.65–VCC I/O voltage range - eliminates level shifters when interfacing with 1.8 V microcontrollers |
| CFI Compliance | Supports standardized autoselect and geometry query - enables generic flash drivers and bootloader portability |
| Security Sector Region | 1024-byte OTP area with dual 512-byte lockable regions - stores immutable keys or calibration data |
| Suspend/Resume | Halts active program/erase to service high-priority reads - critical for real-time interrupt response in control systems |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
Use Scenario: Storing boot firmware and configuration tables in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Primary non-volatile boot memory mapped directly to CPU address space for XIP execution. Use Value: 90 ns random access and 15 ns page mode enable deterministic startup within <50 ms; 100K-cycle endurance ensures >10 years of field updates. |
Use Scenario: Holding certified bootloader and safety-critical initialization routines in FDA-regulated diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for immutable boot code with hardware write protection on top/bottom sectors. Use Value: #WP pin and OTP region prevent unauthorized modification; CFI support simplifies validation of flash driver compliance with IEC 62304. |
| Automotive Infotainment Head Unit | Network Router Configuration Storage |
Use Scenario: Storing OS kernel, UI assets, and over-the-air (OTA) update staging area in automotive-grade infotainment systems. IC Role / Device Role / Timing Role: High-density parallel Flash providing low-latency read for GUI rendering and robust program/erase for field upgrades. Use Value: 256-word write buffer accelerates OTA patch application; –40°C to +85°C rating meets AEC-Q100 Grade 3 requirements. |
Use Scenario: Retaining persistent configuration, certificates, and routing tables across power cycles in enterprise edge routers. IC Role / Device Role / Timing Role: Non-volatile configuration store accessed via parallel bus during system initialization and runtime reconfiguration. Use Value: Sector erase granularity (128 kB) isolates config updates from firmware partitions; suspend/resume avoids packet loss during background writes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR Flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S29GL256S90TFI010 | Spansion (now Cypress) 256-Mbit parallel NOR; 90 ns access, same TSOP-56 package but requires VIO = VCC (no EVIO) | Lacks EVIO flexibility and OTP security region; CFI implementation differs slightly in extended query structure | Choose when existing design uses Spansion toolchain and does not require 1.8 V I/O compatibility |
| MX29GL256ELXGI-90G | Macronix 256-Mbit parallel NOR; 90 ns access, TSOP-56, supports EVIO but no OTP region or DPB protection | Missing security sector and dynamic sector protection; lower endurance (100K vs. 100K - same spec but unverified OTP reliability) | Prefer for cost-sensitive industrial apps where OTP and enhanced protection are not required |
Compared with S29GL256S90TFI010 and MX29GL256ELXGI-90G, the W29GL256SL9T TR uniquely combines EVIO, 1024-byte OTP, and DPB/IPB sector protection in a single TSOP-56 package - making it optimal for secure, mixed-voltage, long-lifecycle embedded systems requiring field-upgradable firmware.
Availability
W29GL256SL9T TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, and automotive infotainment head units requiring stable component supply, long-term lifecycle assurance, and drop-in compatibility with legacy parallel Flash sockets.
Supply support for W29GL256SL9T TR 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
Winbond Electronics is a Taiwan-based semiconductor company specializing in specialty memory solutions, including NOR/NAND Flash, SRAM, and mobile DRAM, serving industrial, automotive, and communications markets.
The W29GL series targets high-reliability embedded systems needing fast XIP performance, robust sector protection, and extended temperature operation - designed specifically for boot code, firmware, and configuration storage where data integrity and long-term availability are critical.
FAQ
What is the package type and pin count of the W29GL256SL9T TR?
The W29GL256SL9T TR uses a 56-pin TSOP (Thin Small Outline Package) with 14 mm × 20 mm body dimensions, conforming to JEDEC MO-142AC. This package is mechanically and electrically compatible with standard parallel Flash sockets used in industrial motherboards and legacy embedded controllers. The W29GL256SL9T TR pinout matches industry-standard x16 NOR Flash layouts, enabling straightforward board-level replacement.
Does the W29GL256SL9T TR support Execute-in-Place (XIP) functionality?
Yes, the W29GL256SL9T TR supports XIP through its fast 90 ns random access time and 15 ns page read mode, allowing microcontrollers to execute code directly from the Flash array without copying to RAM. Its uniform 128-kByte sector architecture and CFI compliance ensure predictable timing and compatibility with common XIP-aware bootloaders. The W29GL256SL9T TR is widely deployed in applications where deterministic startup and low-latency instruction fetch are required.
How does the Enhanced Variable I/O (EVIO) feature work on the W29GL256SL9T TR?
The W29GL256SL9T TR includes a dedicated EVIO pin that supplies the I/O drivers independently from VCC, accepting 1.65 V to VCC. This allows the W29GL256SL9T TR to interface directly with 1.8 V microcontrollers while maintaining VCC at 3.3 V for core operation - eliminating external level shifters. EVIO ensures correct input thresholds and output voltage levels regardless of VCC variation, improving signal integrity in mixed-voltage designs.
What security features does the W29GL256SL9T TR provide for firmware protection?
The W29GL256SL9T TR offers multiple hardware-enforced security layers: (1) #WP pin locks top/bottom 128-kB sectors at power-up; (2) a 1024-byte OTP region divided into two 512-byte lockable zones for keys or calibration data; (3) non-volatile IPB and volatile DPB sector protection; and (4) lock register to freeze protection settings. These features collectively prevent unauthorized firmware modification, making the W29GL256SL9T TR suitable for certified medical and industrial safety applications.
Can the W29GL256SL9T TR suspend an ongoing erase or program operation?
Yes, the W29GL256SL9T TR supports Program Suspend and Erase Suspend commands, allowing the host to pause internal algorithms (e.g., sector erase or buffer programming) and perform high-priority reads - essential for real-time systems. After servicing the interrupt, Resume commands restore the suspended operation without data loss. This capability is confirmed in Sections 8.7 and 8.9 of the W29GL256SL9T TR datasheet and is implemented in hardware via the Write State Controller.
W29GL256SL9T TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- -
- Package/Case:
- 56-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 256Mbit
- Memory Organization:
- 16M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 90ns
- Access Time:
- 90 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSOP
W29GL256SL9T TR FAQ
1.How can I place an order for W29GL256SL9T TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W29GL256SL9T TR 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 W29GL256SL9T TR reliable?
The price and inventory of W29GL256SL9T TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W29GL256SL9T TR is usually 5 days.
3.What payment methods are accepted for W29GL256SL9T TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W29GL256SL9T TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W29GL256SL9T TR?
W29GL256SL9T TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W29GL256SL9T TR 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 W29GL256SL9T TR?
For technical support, including W29GL256SL9T TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W29GL256SL9T TR requirements.
6.How does Aetrix verify that W29GL256SL9T TR is sourced from the original manufacturer or authorized distributors?
All W29GL256SL9T TR 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 W29GL256SL9T TR meets industry standards.
7.What is the process for return or replacement of W29GL256SL9T TR?
All W29GL256SL9T TR units undergo pre-shipment inspection (PSI). If there is an issue with W29GL256SL9T TR, 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 W29GL256SL9T TR part is unused and in its original packaging.
Return procedure for W29GL256SL9T TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W29GL256SL9T TR Tags
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M24C02-WMN6TP
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