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Winbond Electronics Corporation W29GL032CT7B
- Part No.:
- W29GL032CT7B
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 64-LBGA
- Datasheet:
-
W29GL032CT7B.pdf
- Description:
- IC FLASH 32MBIT PARALLEL 64LFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,203
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Product details
Overview
W29GL032CT7B from Winbond is a 32-Mbit (4 MB) parallel NOR Flash memory IC designed for embedded system code storage and data logging, featuring 70 ns random access time, 25 ns page read speed, uniform 64 KB sectors (64 total), single 3.0 V supply (2.7–3.6 V), and CFI-compliant interface for firmware compatibility.
For engineers reviewing the W29GL032CT7B datasheet, W29GL032CT7B pinout, W29GL032CT7B application, or W29GL032CT7B equivalent, key selection criteria include boot-sector architecture (Top/Bottom), #BYTE-configurable word/byte mode, hardware write protection via #WP/ACC, deep power-down mode (5 µA), and 100,000 program/erase cycles with 20-year data retention.
Technical Context
The W29GL032CT7B implements a parallel asynchronous interface with address latching on falling #WE/#CE and data latching on rising #WE/#CE. It supports both word (16-bit DQ[15:0]) and byte (8-bit DQ[7:0]) operation controlled by #BYTE, and uses EVIO to scale I/O voltage thresholds from 1.65 V to VCC.
Its architecture includes a 64-sector uniform array (or Top/Bottom boot configuration), a 16-word write buffer for accelerated multi-word programming, and dual status detection via RY/#BY output and DQ7 toggling. Sector protection combines volatile DPB, non-volatile IPB, and factory-lockable security sector (256-byte).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 Mbit (4 MB) organized as 2,097,152 × 16 or 4,194,304 × 8 |
| Access Time | 70 ns random read - enables fast instruction fetch in microcontroller boot applications |
| Page Read Speed | 25 ns - reduces latency during sequential code execution from flash |
| Write Buffer Size | 16 words (32 bytes) - cuts multi-word programming time by up to 5× vs. single-word writes |
| Erase Endurance | 100,000 cycles - supports frequent firmware updates in industrial controllers |
| Data Retention | 20 years at 85°C - ensures long-term reliability in automotive and telecom equipment |
| Deep Power-Down Current | 5 µA - extends battery life in portable or always-on edge devices |
| Operating Voltage | 2.7–3.6 V - compatible with modern 3.3 V logic rails without level-shifting |
Pinout & Package
W29GL032CT7B is packaged in 48-pin TSOP (Type I, 12 × 20 mm), configured for Top/Bottom boot sector architecture. Pinout matches standard parallel NOR Flash interface with dedicated #WP/ACC, #BYTE, EVIO, and RY/#BY signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A20 | Address Inputs | 21-bit address bus supporting full 4 MB addressing in word mode; A-1 alias on DQ15 in byte mode |
| DQ0–DQ14 | Data I/O (bidirectional) | 8-bit or 16-bit data path selected by #BYTE; DQ15 functions as A-1 in byte mode |
| #CE | Chip Enable | Active-low chip select enabling device communication; controls power state entry/exit |
| #OE | Output Enable | Active-low control for output buffer; used during read operations to gate data onto bus |
| #WE | Write Enable | Active-low signal latching address/data during programming/erase commands |
| #WP/ACC | Write Protect / Acceleration | Hardware sector lock when pulled low; applies VHH for accelerated programming when high |
| #BYTE | Byte/Word Mode Select | High = 16-bit word mode (A20–A0); Low = 8-bit byte mode (A20–A-1 via DQ15) |
| RY/#BY | Ready/Busy Status | Open-drain output indicating operation completion (low = busy, high = ready) |
| EVIO | Enhanced Variable I/O Supply | Reference voltage setting I/O threshold (1.65–VCC); NC in LFBGA64 top/bottom config |
Key Features
| Feature | Design Value |
|---|---|
| CFI Interface Support | Enables automatic firmware detection and configuration without hard-coded timing or vendor-specific drivers |
| Secured Silicon Sector | 256-byte factory-programmable area with electronic serial number for device authentication and traceability |
| Enhanced Sector Protection | Combines volatile DPB and non-volatile IPB for flexible, field-updatable sector locking without permanent fuse use |
| Erase/Program Suspend | Allows interrupting background erase or program to service high-priority reads, improving real-time system responsiveness |
| Deep Power-Down Mode | Reduces standby current to 5 µA while preserving all memory contents and sector lock states |
Applications
| Industrial PLC Firmware Storage | Automotive Infotainment Boot Code |
|---|---|
Use Scenario: Storing and executing boot firmware for programmable logic controllers operating in harsh temperature environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Primary non-volatile code storage with fast random access for instruction fetch and page-mode reads for configuration tables. Use Value: 70 ns access time and 20-year data retention ensure deterministic boot performance over product lifetime without refresh. | Use Scenario: Holding boot loader and OS kernel for head-unit microcontrollers requiring secure, field-upgradable software. IC Role / Device Role / Timing Role: CFI-compliant NOR Flash providing verified, drop-in-compatible replacement for legacy parts in automotive qualification programs. Use Value: Secured Silicon Sector enables unique device ID binding and anti-cloning; #WP/ACC pin allows hardware-enforced write protection during vehicle operation. |
| Medical Diagnostic Equipment Data Log | Networking Router Configuration Storage |
Use Scenario: Recording time-stamped sensor calibration and diagnostic event logs in FDA-cleared medical devices. IC Role / Device Role / Timing Role: High-endurance data archive with 100,000 erase cycles and ECC-capable interface for integrity-critical logging. Use Value: Write buffer acceleration and suspend/resume reduce log-write latency during concurrent processing, avoiding missed events. | Use Scenario: Storing router startup configuration, firmware images, and certificate stores in carrier-grade Ethernet switches. IC Role / Device Role / Timing Role: Parallel interface Flash supporting fast firmware load and secure sector-based key storage with hardware lock. Use Value: Deep power-down mode (5 µA) minimizes energy draw during standby; Top/Bottom boot architecture enables fail-safe dual-image recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S29GL032N90TFIR10 | 48-pin TSOP, 3.0 V, 70 ns access, but uses different CFI query structure and lacks EVIO pin | Requires firmware driver update for CFI parameter parsing; no dynamic I/O voltage scaling | Choose if existing design already uses Spansion S29GL032N and board layout supports identical pinout |
| MX29GL320EBTI-70G | 48-pin TSOP, same 32 Mbit density and 70 ns speed, but only supports uniform sector architecture (no Top/Bottom boot option) | Cannot replace boot-sector functionality without modifying bootloader address mapping | Prefer for generic code storage where boot vector location is fixed and sector protection flexibility is secondary |
Compared with W29GL032CT7B, S29GL032N90TFIR10 requires CFI driver adaptation and lacks EVIO-based voltage adaptability, while MX29GL320EBTI-70G omits boot-sector addressing - making W29GL032CT7B uniquely suited for designs needing hardware-configurable boot vectors and scalable I/O thresholds.
Availability
W29GL032CT7B is available at Aetrix Electronics and suitable for industrial control systems, automotive infotainment modules, and medical data loggers requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for W29GL032CT7B 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 SPI/NOR Flash, RAM, and voice ICs, serving industrial, automotive, and consumer markets since 1987.
The W29GL series targets embedded systems requiring robust, pin-compatible parallel Flash with enhanced reliability features - specifically engineered for code execution, secure boot, and field-upgradable firmware in mission-critical applications.
FAQ
What is the sector architecture of the W29GL032CT7B?
The W29GL032CT7B uses a Top/Bottom boot sector architecture with 62 uniform 64 KB sectors plus two 8 KB boot sectors (top and bottom). This layout enables safe dual-image firmware storage and reliable reset vector placement. The exact sector map is defined in the datasheet's Table 6-2 (Top Boot) and Table 6-3 (Bottom Boot), and is selectable via hardware configuration during power-up.
Does the W29GL032CT7B support both byte and word data interfaces?
Yes, the W29GL032CT7B supports both 8-bit and 16-bit operation via the #BYTE pin. When #BYTE = VIH, it operates in 16-bit word mode using A20–A0 and DQ15–DQ0. When #BYTE = VIL, it operates in 8-bit byte mode using A20–A-1 (with DQ15 repurposed as A-1) and DQ7–DQ0. This dual-mode capability simplifies integration across 8-bit and 16-bit host buses without external glue logic.
How does hardware write protection work on the W29GL032CT7B?
Hardware write protection on the W29GL032CT7B is implemented via the #WP/ACC pin. When held low, it permanently locks the top or bottom boot sectors (depending on configuration), preventing accidental erase or program. When driven high with VHH (12 V), it accelerates programming time. Unlike software-based protection, this mechanism remains active even after power cycling and requires no firmware intervention to enforce.
What is the purpose of the EVIO pin on the W29GL032CT7B?
The EVIO (Enhanced Variable I/O) pin on the W29GL032CT7B sets the input voltage threshold for all address, control, and data pins, scaling from 1.65 V to VCC. This allows seamless interoperability with mixed-voltage systems (e.g., 1.8 V I/O controllers driving a 3.3 V Flash) without external level shifters. In the W29GL032CT7B's 48-pin TSOP package, EVIO is fully functional and must be tied to a stable reference within its specified range.
Can the W29GL032CT7B enter a low-power state during system idle?
Yes, the W29GL032CT7B supports Deep Power-Down mode, reducing ICC to just 5 µA while retaining all memory contents and sector protection states. Entry is triggered by a specific command sequence followed by #CE high, and exit requires a hardware reset or #RESET pulse. This mode is ideal for battery-powered or energy-sensitive applications where flash must remain powered but inactive for extended periods.
W29GL032CT7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- -
- Package/Case:
- 64-LBGA
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 32Mbit
- Memory Organization:
- 4M x 8, 2M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-LFBGA (11x13)
W29GL032CT7B FAQ
1.How can I place an order for W29GL032CT7B through Aetrix?
Please submit a Request for Quotation (RFQ) for W29GL032CT7B 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 W29GL032CT7B reliable?
The price and inventory of W29GL032CT7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W29GL032CT7B is usually 5 days.
3.What payment methods are accepted for W29GL032CT7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W29GL032CT7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W29GL032CT7B?
W29GL032CT7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W29GL032CT7B 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 W29GL032CT7B?
For technical support, including W29GL032CT7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W29GL032CT7B requirements.
6.How does Aetrix verify that W29GL032CT7B is sourced from the original manufacturer or authorized distributors?
All W29GL032CT7B 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 W29GL032CT7B meets industry standards.
7.What is the process for return or replacement of W29GL032CT7B?
All W29GL032CT7B units undergo pre-shipment inspection (PSI). If there is an issue with W29GL032CT7B, 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 W29GL032CT7B part is unused and in its original packaging.
Return procedure for W29GL032CT7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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