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Winbond Electronics Corporation W29GL032CB7S
- Part No.:
- W29GL032CB7S
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
W29GL032CB7S.pdf
- Description:
- IC FLASH 32MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,381
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Product details
Overview
W29GL032CB7S from Winbond is a 32-Mbit (4 MB) parallel NOR Flash memory IC designed for embedded system code storage and data logging. It operates at 3.0 V (2.7–3.6 V), delivers 70 ns random access and 25 ns page read speed, supports uniform 64 KB sectors (63 × 64 KB + 8 × 8 KB boot sectors), and integrates CFI interface, hardware write protection (#WP/ACC), and deep power-down mode.
For engineers reviewing the W29GL032CB7S datasheet, W29GL032CB7S pinout, W29GL032CB7S application, or W29GL032CB7S equivalent, key selection criteria include sector architecture (Top/Bottom Boot), EVIO voltage flexibility (1.65–VCC), #BYTE-controlled byte/word mode, RY/#BY status signaling, and compatibility with legacy 3V parallel Flash firmware interfaces.
Technical Context
The W29GL032CB7S implements a parallel asynchronous interface with address lines A0–A20 and bidirectional DQ0–DQ15 I/O, supporting both byte (DQ0–DQ7) and word (DQ0–DQ15) modes via #BYTE control. Its internal architecture includes a 16-word write buffer, 8-word page read buffer, and dedicated secured silicon sector (256-byte) for electronic serial number storage.
It features dual-sector protection mechanisms: Enhanced Sector Protect using Dynamic and Individual (non-volatile) lock registers, plus hardware-level #WP/ACC pin control that protects top/bottom boot sectors independently. The device supports CFI mode for host auto-configuration and uses polling/toggling on RY/#BY to monitor erase/program completion without interrupt dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 Mbit (4 MB) - supports full firmware images for mid-complexity microcontrollers. |
| Supply Voltage | 2.7–3.6 V - compatible with standard 3.3 V logic rails and tolerant of brown-out conditions. |
| Random Access Time | 70 ns - enables direct XIP (eXecute-In-Place) execution from Flash in real-time systems. |
| Page Read Access | 25 ns - accelerates sequential instruction fetch or configuration table reads. |
| Erase/Program Cycles | >100,000 - suitable for field-updatable firmware with frequent minor revisions. |
| Data Retention | >20 years - ensures long-term reliability in industrial and automotive applications. |
| Operating Temp. | –40°C to +85°C - qualified for extended temperature industrial environments. |
| Deep Power-Down Current | 1 µA - reduces standby power in battery-backed or energy-constrained systems. |
Pinout & Package
W29GL032CB7S is packaged in a 48-pin TSOP (12 × 20 mm, Top Boot configuration), per ordering code suffix 'B7S'. Pin functions are defined for parallel bus operation with hardware reset (#RESET), ready/busy status (RY/#BY), and enhanced variable I/O (EVIO) supply.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A20 | Address Inputs | 21-bit address bus supporting full 4 MB addressing; A-1 alias on DQ15 in byte mode. |
| DQ0–DQ15 | Data I/O Bidirectional Bus | 16-bit word mode or 8-bit byte mode (selected by #BYTE); DQ15 serves as A-1 in byte mode. |
| #CE, #OE, #WE | Chip/Output/Write Enable Controls | Standard parallel Flash control signals; timing-critical for tCE/tOE/tWE compliance. |
| #BYTE | Byte/Word Mode Select | VIH = word mode (A20–A0), VIL = byte mode (A20–A-1); determines address width and DQ usage. |
| #WP/ACC | Hardware Write Protect / Acceleration | VIL protects top/bottom boot sectors; VIH enables accelerated programming when VHH applied. |
| RY/#BY | Ready/Busy Status Output | Active-low open-drain signal indicating ongoing erase/program operations; used for polling. |
| #RESET | Hardware Reset Input | Asynchronous active-low reset that forces device into read mode and clears internal state. |
| EVIO | Enhanced Variable I/O Supply | Defines input/output voltage thresholds (1.65–VCC); not connected in Top/Bottom LFBGA64 variants. |
Key Features
| Feature | Design Value |
|---|---|
| 16-Word Write Buffer | Reduces total programming time for multi-word updates by batching writes-critical for fast firmware patching. |
| Secured Silicon Sector | 256-byte factory- or customer-programmable region with 16-byte random electronic serial number for device authentication. |
| Enhanced Sector Protection | Combines volatile DPB and non-volatile IPB lock registers to enable flexible, persistent sector locking without firmware overhead. |
| CFI Interface Support | Enables automatic host detection of geometry, timing, and command set-eliminates hard-coded Flash initialization sequences. |
| Suspend/Resume Commands | Allows interruption of long erase/program operations to service higher-priority reads-essential for real-time multitasking systems. |
Applications
| Industrial PLC Firmware Storage | Automotive Instrument Cluster Code Memory |
|---|---|
Use Scenario: Storing boot code and application firmware in programmable logic controllers requiring field updates and long-term data integrity. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP capability and hardware write protection against accidental overwrite during update cycles. Use Value: 70 ns random access enables deterministic instruction fetch; >100K erase cycles support decades of firmware revision management. | Use Scenario: Holding calibrated display graphics, gauge logic, and safety-critical boot routines in automotive digital dashboards. IC Role / Device Role / Timing Role: Trusted code repository with secured silicon sector for anti-counterfeit identification and CFI-assisted host initialization. Use Value: –40°C to +85°C rating ensures reliability across vehicle thermal profiles; deep power-down mode minimizes parasitic drain in sleep states. |
| Medical Diagnostic Equipment Configuration | Networking Router Boot Image Storage |
Use Scenario: Storing calibration tables, user preferences, and regulatory-compliant firmware versions in portable ultrasound and ECG devices. IC Role / Device Role / Timing Role: Parameter and image metadata storage with individual sector lock to preserve FDA-mandated calibration data. Use Value: Enhanced sector protect prevents unauthorized modification; >20-year data retention meets medical device lifecycle requirements. | Use Scenario: Hosting primary bootloader and fail-safe recovery image in enterprise-grade Ethernet switches and wireless access points. IC Role / Device Role / Timing Role: Dual-image storage with top/bottom boot architecture enabling atomic firmware swaps and rollback capability. Use Value: 25 ns page read accelerates boot sequence; suspend/resume allows concurrent status polling during flash updates. |
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, 3.0 V, 70 ns access, but uses different CFI query structure and lacks EVIO pin. | Requires CFI re-initialization in host firmware; no dynamic I/O voltage scaling for mixed-voltage systems. | Choose if legacy S29GL driver stack is already deployed and EVIO flexibility is unnecessary. |
| MX29GL320EBTI-70G | 48-pin TSOP, 3.0 V, 70 ns, identical sector map and #WP/ACC behavior, but no secured silicon sector. | Cannot store unique electronic serial numbers; relies on external secure element for device identity. | Choose when cost sensitivity outweighs need for on-chip secure ID, and sector protection requirements match exactly. |
Compared with S29GL032N90TFI010 and MX29GL320EBTI-70G, the W29GL032CB7S uniquely combines EVIO voltage adaptability, factory-programmable secured silicon, and identical top-boot sector layout-making it optimal for new designs requiring firmware security, mixed-voltage interoperability, and drop-in compatibility with Winbond's W29GL family.
Availability
W29GL032CB7S is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster code memory, and medical diagnostic equipment configuration requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for W29GL032CB7S 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 is engineered for high-reliability embedded code storage, emphasizing fast program/erase performance, robust sector protection, and seamless firmware upgrade capability in resource-constrained systems.
FAQ
What is the operating voltage range for the W29GL032CB7S?
The W29GL032CB7S operates over a supply voltage range of 2.7 V to 3.6 V, making it compatible with standard 3.3 V logic systems while providing margin for voltage droop during transient load conditions. This range is specified in the Absolute Maximum Ratings and Recommended Operating Conditions sections of the official datasheet, and all AC/DC characteristics-including access time and programming voltage-are guaranteed across this full window. The W29GL032CB7S does not require separate VCCQ or I/O voltage rails.
Does the W29GL032CB7S support both byte and word data access modes?
Yes, the W29GL032CB7S supports both byte and word access modes via the #BYTE pin: when #BYTE = VIH, the device operates in 16-bit word mode with address lines A20–A0 and DQ0–DQ15 active; when #BYTE = VIL, it operates in 8-bit byte mode with address lines A20–A-1 (where A-1 is mapped to DQ15) and only DQ0–DQ7 used for data. This dual-mode capability is confirmed in Section 5 (Pin Description) and Section 7.1 (Device Bus Operation) of the datasheet, and directly impacts address decoding and bus width configuration in the host system.
How does the #WP/ACC pin function on the W29GL032CB7S?
On the W29GL032CB7S, the #WP/ACC pin serves two distinct roles: when held at VIL, it hardware-protects either the top two or bottom two boot sectors (depending on Top/Bottom Boot configuration), independent of software sector locks; when driven to VHH (12 V), it accelerates programming time for higher throughput during manufacturing. This dual functionality is documented in Section 2 (Features) and Section 7.1 (Device Bus Operation), and the pin is electrically isolated from the core logic-no internal pull-up or pull-down is present, requiring external biasing per application needs.
What is the purpose of the EVIO pin on the W29GL032CB7S?
The EVIO (Enhanced Variable I/O) pin on the W29GL032CB7S sets the voltage threshold for all input and output signal levels-including address, control, and DQ pins-across a range of 1.65 V to VCC. This allows the W29GL032CB7S to interface reliably with mixed-voltage host systems (e.g., 1.8 V address/control + 3.3 V I/O) without level shifters. Per Section 2 and Section 5 of the datasheet, EVIO is not connected in Top/Bottom Boot LFBGA64 packages but is fully functional and required in TSOP and TFBGA variants like the W29GL032CB7S.
Is the W29GL032CB7S pin-compatible with earlier Winbond W29GL032C variants?
Yes, the W29GL032CB7S is pin-compatible with other W29GL032C family members in the same 48-pin TSOP package, including identical pinout, electrical characteristics, and timing parameters. The 'B7S' suffix denotes Top Boot configuration, 48-pin TSOP, and commercial temperature grade (0°C to +70°C), aligning with Winbond's standardized part numbering scheme in Table 10-1. No PCB layout changes are required when migrating between W29GL032C variants sharing the same package and boot configuration.
W29GL032CB7S Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- -
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- 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-TSOP
W29GL032CB7S FAQ
1.How can I place an order for W29GL032CB7S through Aetrix?
Please submit a Request for Quotation (RFQ) for W29GL032CB7S 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 W29GL032CB7S reliable?
The price and inventory of W29GL032CB7S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W29GL032CB7S is usually 5 days.
3.What payment methods are accepted for W29GL032CB7S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W29GL032CB7S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W29GL032CB7S?
W29GL032CB7S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W29GL032CB7S 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 W29GL032CB7S?
For technical support, including W29GL032CB7S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W29GL032CB7S requirements.
6.How does Aetrix verify that W29GL032CB7S is sourced from the original manufacturer or authorized distributors?
All W29GL032CB7S 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 W29GL032CB7S meets industry standards.
7.What is the process for return or replacement of W29GL032CB7S?
All W29GL032CB7S units undergo pre-shipment inspection (PSI). If there is an issue with W29GL032CB7S, 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 W29GL032CB7S part is unused and in its original packaging.
Return procedure for W29GL032CB7S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W29GL032CB7S Tags
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