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Winbond Electronics Corporation W29GL032CT7A
- Part No.:
- W29GL032CT7A
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
W29GL032CT7A.pdf
- Description:
- IC FLASH 32MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,438
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Product details
Overview
W29GL032CT7A from Winbond is a 32-Mbit (4 MB) parallel NOR Flash memory IC with uniform and boot-sector architecture, 3.0 V single-supply operation (2.7–3.6 V), 70 ns random access time, 25 ns page read speed, and 16-word write buffer. It supports CFI interface, deep power-down mode, and hardware sector protection for embedded firmware storage in industrial controllers and network boot loaders.
For engineers reviewing the W29GL032CT7A datasheet, W29GL032CT7A pinout, W29GL032CT7A application, or W29GL032CT7A equivalent, key selection criteria include boot-sector configuration compatibility, #WP/ACC-accelerated programming timing, EVIO voltage scaling support, and RY/#BY status signaling for real-time erase/program monitoring.
Technical Context
The W29GL032CT7A implements a dual-mode address/data bus with DQ15/A-1 multiplexing and #BYTE-controlled byte/word selection. Its Enhanced Variable IO (EVIO) input sets all I/O voltage thresholds between 1.65 V and VCC, enabling interoperability with mixed-voltage host systems without level shifters.
It features hardware-based sector protection via #WP/ACC pin-asserting VIL protects top/bottom boot sectors or first/last uniform sectors-and supports suspend/resume during program/erase cycles. The device uses toggle-bit and data# polling to report algorithm completion without interrupt dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 Mbit (4 MB) organized as 2M × 16 or 4M × 8 |
| Access Time | 70 ns random read; enables fast instruction fetch in MCU boot code execution |
| Page Read Speed | 25 ns; reduces latency for sequential firmware block reads |
| Write Buffer Size | 16-word (32-byte); cuts multi-word programming time by up to 5× vs. single-word writes |
| Erase/Program Endurance | 100,000 cycles; supports field firmware updates over product lifetime |
| Data Retention | 20 years at 85°C; ensures long-term reliability in industrial environments |
| Operating Voltage | 2.7–3.6 V single supply; compatible with 3.3 V system rails and brown-out tolerant |
| Temperature Range | –40°C to +85°C; qualified for extended industrial operation |
Pinout & Package
W29GL032CT7A is packaged in 48-pin TSOP (12 × 20 mm) with boot-sector configuration (T/B), per ordering code suffix 'T7A' indicating Top Boot Sector and standard TSOP-48 package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A20 | Address Inputs | 21-bit address bus supporting full 4 MB addressing in word mode (#BYTE = VIH) |
| DQ0–DQ14 | Data I/O (X16) | Lower 15 bits of 16-bit data bus; DQ15/A-1 serves as MSB or A-1 in byte mode |
| DQ15/A-1 | Multiplexed Pin | In word mode: DQ15 (data bit 15); in byte mode: A-1 (address bit -1 for 4M×8 config) |
| #CE | Chip Enable | Active-low chip select; controls device activation and power state transitions |
| #OE | Output Enable | Active-low control for output buffer; used with #CE to gate read data onto bus |
| #WE | Write Enable | Active-low strobe for latching address/data during write and command sequences |
| #WP/ACC | Hardware Protect/Accelerate | VIL enables hardware sector lock; VIH + VHH enables accelerated programming |
| RY/#BY | Ready/Busy Status | Open-drain output indicating active erase/program cycle (low) or ready (high) |
| #RESET | Hardware Reset | Asynchronous reset that forces device into read mode and clears internal state |
| #BYTE | Byte/Word Mode Select | VIL enables X8 mode (A-1 active); VIH enables X16 mode (A0–A20 active) |
| EVIO | I/O Voltage Reference | Sets input threshold and output drive strength; must be tied to VCC or external 1.65–VCC source |
| VCC / VSS | Power / Ground | Single 3.0 V supply; decoupling required per AC characteristics (tPD = 5 ns max) |
Key Features
| Feature | Design Value |
|---|---|
| Boot-Sector Architecture | Top-boot configuration with eight 4-kWord (8-kByte) protected sectors for secure bootloader storage |
| Enhanced Sector Protection | Dynamic lock register + individual non-volatile sector protect bits enable selective firmware partitioning |
| Secured Silicon Sector | 128-word (256-byte) factory-programmable region with 8-word electronic serial number for device authentication |
| CFI Interface Support | Standardized JEDEC JESD68 query mode enables automatic driver detection and configuration in OS/bootloader |
| Deep Power-Down Mode | Reduces standby current to ≤1 µA; extends battery life in always-on edge devices |
| Suspend/Resume Capability | Halts active erase or program operations to service high-priority reads, then resumes without data loss |
Applications
| Industrial PLC Firmware Storage | Network Router Boot Memory |
|---|---|
Use Scenario: Storing and executing boot code and real-time control firmware in programmable logic controllers operating in harsh temperature environments. IC Role / Device Role / Timing Role: Primary non-volatile code storage with deterministic 70 ns read access and hardware write protection against runtime corruption. Use Value: Ensures firmware integrity via #WP/ACC pin lock and supports rapid field updates using 16-word write buffer and suspend/resume during critical I/O cycles. | Use Scenario: Holding bootloader, kernel image, and configuration tables in enterprise-grade routers requiring secure, fast-access flash. IC Role / Device Role / Timing Role: Boot-sector-configured NOR Flash providing CFI-compliant initialization and top-sector protection for immutable bootloader code. Use Value: Enables safe over-the-air updates via sector-erase isolation and 20-year data retention for unattended deployments. |
| Medical Diagnostic Device BIOS | Automotive Infotainment System Code Storage |
Use Scenario: Storing certified diagnostic firmware and calibration data in FDA-regulated imaging equipment with strict revision control. IC Role / Device Role / Timing Role: Secure, tamper-resistant code memory with Secured Silicon Sector for unique device ID and locked boot sector. Use Value: Meets IEC 62304 traceability requirements through factory-programmed serial number and non-volatile sector lock bits. | Use Scenario: Hosting infotainment OS loader and safety-critical boot modules in automotive head units operating across –40°C to +85°C. IC Role / Device Role / Timing Role: AEC-Q100 stress-tested parallel Flash with deep power-down mode for low-quiescent-current sleep states. Use Value: Delivers 100,000+ endurance cycles for frequent software updates and meets automotive thermal reliability standards. |
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 |
|---|---|---|---|
| S29GL032N90TFI010 | 48-pin TSOP, same 32 Mbit density and 70 ns access, but uses different CFI vendor ID and lacks EVIO pin | Requires firmware adaptation for CFI query responses; no voltage-scalable I/O for mixed-voltage hosts | Choose when legacy Cypress-compatible drivers are in use and EVIO flexibility is unnecessary |
| MX29GL320EBTI-70G | 48-pin TSOP, identical boot-sector layout and timing, but supports only 3.0 V ±0.3 V (not 2.7–3.6 V range) | Less tolerant of system rail droop; unsuitable for brown-out-prone industrial power domains | Prefer where strict 3.0 V regulation exists and wider voltage margin is not required |
Compared with S29GL032N90TFI010 and MX29GL320EBTI-70G, the W29GL032CT7A provides broader voltage tolerance, EVIO-driven I/O adaptability, and factory-programmable Secured Silicon Sector-making it optimal for new designs requiring mixed-voltage compatibility and device-level authentication.
Availability
W29GL032CT7A is available at Aetrix Electronics and suitable for industrial PLCs, network infrastructure equipment, and medical diagnostic devices requiring stable component supply, long-lifecycle support, and guaranteed boot-sector configuration.
Supply support for W29GL032CT7A 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 and SRAM, serving industrial, communications, and consumer markets since 1987.
The W29GL series targets embedded systems requiring reliable, pin-compatible parallel Flash with enhanced security, power efficiency, and CFI interoperability-designed specifically for firmware storage in resource-constrained controllers and boot loaders.
FAQ
What boot-sector configuration does W29GL032CT7A implement?
W29GL032CT7A implements a Top Boot Sector configuration, with eight 4-kWord (8-kByte) protected sectors at the highest address range (3F0000h–3FFFFFh). This layout isolates bootloader code from application firmware updates and is confirmed by its 'T7A' ordering suffix and Table 6-2 in the datasheet.
Does W29GL032CT7A support both X8 and X16 data bus widths?
Yes, W29GL032CT7A supports both configurations via the #BYTE pin: VIH selects X16 mode (A0–A20, DQ0–DQ15), and VIL selects X8 mode (A-1–A20, DQ0–DQ7). In X8 mode, DQ15 functions as address bit A-1, enabling 4M × 8 organization-verified in Section 5 and Table 7-1.
How does the #WP/ACC pin function in W29GL032CT7A?
In W29GL032CT7A, the #WP/ACC pin provides dual functionality: at VIL, it hardware-locks top or bottom boot sectors; at VIH with VHH applied, it accelerates programming time by ~2×. This behavior is defined in Section 2 Features and Table 7-1, and applies specifically to the T/B configuration of W29GL032CT7A.
What is the purpose of the EVIO pin on W29GL032CT7A?
The EVIO pin on W29GL032CT7A sets the reference voltage for all input thresholds and output drive strength, supporting 1.65 V to VCC. This allows direct interfacing with 1.8 V, 2.5 V, or 3.3 V hosts without external level shifters-documented in Section 2 Features and Pin Description Table 5-1.
Is W29GL032CT7A compatible with Common Flash Interface (CFI)?
Yes, W29GL032CT7A fully supports CFI mode per JEDEC JESD68, enabling automatic identification of manufacturer ID, device ID, geometry, and interface parameters. CFI entry is triggered by specific address/data sequences (Table 7-19–7-22), and is explicitly confirmed in Section 7.6 of the datasheet.
W29GL032CT7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- -
- Package/Case:
- 48-TFBGA
- Packaging:
- Tray
- 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:
- 48-TFBGA (6x8)
W29GL032CT7A FAQ
1.How can I place an order for W29GL032CT7A through Aetrix?
Please submit a Request for Quotation (RFQ) for W29GL032CT7A 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 W29GL032CT7A reliable?
The price and inventory of W29GL032CT7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W29GL032CT7A is usually 5 days.
3.What payment methods are accepted for W29GL032CT7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W29GL032CT7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W29GL032CT7A?
W29GL032CT7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W29GL032CT7A 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 W29GL032CT7A?
For technical support, including W29GL032CT7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W29GL032CT7A requirements.
6.How does Aetrix verify that W29GL032CT7A is sourced from the original manufacturer or authorized distributors?
All W29GL032CT7A 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 W29GL032CT7A meets industry standards.
7.What is the process for return or replacement of W29GL032CT7A?
All W29GL032CT7A units undergo pre-shipment inspection (PSI). If there is an issue with W29GL032CT7A, 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 W29GL032CT7A part is unused and in its original packaging.
Return procedure for W29GL032CT7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W29GL032CT7A Tags
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