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Winbond Electronics Corporation W29GL032CL7B
- Part No.:
- W29GL032CL7B
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 64-LBGA
- Datasheet:
-
W29GL032CL7B.pdf
- Description:
- IC FLASH 32MBIT PARALLEL 64LFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,190
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Product details
Overview
W29GL032CL7B from Winbond is a 32-Mbit (4 MB) parallel NOR Flash memory IC with uniform and boot-sector architecture, 70 ns random access time, 25 ns page read speed, and single 3.0 V supply (2.7–3.6 V). It supports byte/word configuration via #BYTE pin, includes 16-word write buffer and 8-word page read buffer, and delivers >100,000 program/erase cycles with >20-year data retention for embedded firmware storage in industrial controllers.
For engineers reviewing the W29GL032CL7B datasheet, W29GL032CL7B pinout, W29GL032CL7B application, or W29GL032CL7B equivalent, key selection criteria include sector protection granularity (uniform vs. top/bottom boot), EVIO voltage flexibility (1.65–VCC), #WP/ACC hardware acceleration and write protection, CFI interface compatibility, and deep power-down mode for low-power standby operation.
Technical Context
The W29GL032CL7B implements a parallel asynchronous interface with address lines A0–A20 and bidirectional DQ0–DQ15 I/O, supporting both x8 and x16 data bus configurations controlled by the #BYTE pin. Its architecture integrates enhanced sector protect logic with dynamic lock register and individual non-volatile protection modes, plus a dedicated secured silicon sector (256-byte) for factory- or customer-programmed electronic serial numbers.
Functional operation relies on command-based instruction sequences latched on falling #WE/#CE edges, with status monitored via RY/#BY output or data# polling/toggling. It supports suspend/resume for both program and erase operations, accelerated programming under #WP/ACC = VHH, and CFI-compliant system identification and geometry reporting for host bootloader compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 Mbit (4 MB) - supports full firmware images for mid-complexity microcontrollers. |
| Access Time | 70 ns random read - enables direct XIP (execute-in-place) execution without wait states on legacy 8/16-bit buses. |
| Page Read Speed | 25 ns - reduces latency during sequential code fetch or table lookup in boot loaders. |
| Write Buffer Size | 16-word (32-byte) - cuts multi-word programming time by up to 75% versus single-word writes. |
| Endurance | >100,000 program/erase cycles - ensures field reliability across firmware update cycles in industrial gateways. |
| Data Retention | >20 years at 85°C - meets long-lifecycle requirements for infrastructure equipment with no field maintenance. |
| Supply Voltage | 2.7–3.6 V - compatible with 3.3 V systems while tolerating brown-out conditions down to 2.7 V. |
| Operating Temp | –40°C to +85°C - qualified for extended temperature industrial and automotive under-hood applications. |
Pinout & Package
W29GL032CL7B is packaged in 48-pin TSOP (12 × 20 mm), configured as a bottom-boot sector device per ordering code L7B. Pin functions are validated per Winbond datasheet Rev. H, Figure 3-4 and Table 5-1.
| 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 x16 data bus; DQ15 serves as A-1 address input in byte mode (#BYTE = VIL). |
| #CE | Chip Enable | Active-low chip select enabling device participation in bus transactions; controls power state entry. |
| #OE | Output Enable | Active-low control for output buffer; allows shared bus operation without contention during reads. |
| #WE | Write Enable | Active-low strobe for latching address/data during write, program, and erase command sequences. |
| #BYTE | Bus Width Select | High = x16 mode (A0–A20); Low = x8 mode (A-1–A20, DQ15 = A-1); sets data path width and addressing. |
| #WP/ACC | Write Protect / Acceleration | VIL = hardware sector protection; VIH + VHH = accelerated programming for production throughput. |
| RY/#BY | Ready/Busy Status | Open-drain output indicating internal operation progress; active-low during erase/program cycles. |
| #RESET | Hardware Reset | Asynchronous active-low reset that forces device into read mode and clears internal state machines. |
| EVIO | Variable I/O Supply | Input setting logic threshold for all address/control/DQ pins (1.65–VCC); enables mixed-voltage interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced Sector Protection | Combines volatile DPB and non-volatile IPB registers to enable flexible, field-updatable sector locking without firmware changes. |
| Secured Silicon Sector | 256-byte factory- or customer-lockable region containing 16-byte random electronic serial number for device authentication. |
| Suspend/Resume Capability | Allows interrupting active erase or program operations to service high-priority reads, then resuming without data loss. |
| CFI Interface Support | Enables automatic detection of device geometry, timing parameters, and vendor ID by host boot ROMs without hard-coded drivers. |
| Deep Power-Down Mode | Reduces standby current to ≤1 µA - critical for battery-backed systems requiring multi-year shelf life or ultra-low quiescent power. |
| Accelerated Programming | Applying VHH (12 V) to #WP/ACC cuts typical word program time by 50%, accelerating factory programming throughput. |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Boot Code |
|---|---|
|
Use Scenario: Storing and executing boot firmware and real-time control logic in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP capability; provides deterministic 70 ns read access for deterministic scan-cycle timing. Use Value: Uniform sector architecture simplifies firmware partitioning; >20-year data retention eliminates field replacement risk over equipment lifetime. |
Use Scenario: Hosting boot loader and safety-critical calibration data in engine control units requiring ASIL-B compliance and secure update paths. IC Role / Device Role / Timing Role: Trusted boot source with secured silicon sector for unique device identity and cryptographic key binding. Use Value: Hardware write protection (#WP/ACC) prevents accidental corruption during CAN-based OTA updates; CFI support enables generic bootloader compatibility. |
| Medical Imaging System BIOS | Network Switch Boot ROM |
|
Use Scenario: Storing diagnostic firmware and FPGA configuration bitstreams in portable ultrasound and MRI subsystems with strict power budget constraints. IC Role / Device Role / Timing Role: Dual-role storage for BIOS and reconfigurable logic; deep power-down mode extends battery runtime between imaging sessions. Use Value: 16-word write buffer accelerates field firmware patches; >100K endurance supports frequent calibration updates over product lifecycle. |
Use Scenario: Providing fast, reliable boot code for Layer 2/Layer 3 switches requiring sub-second startup and zero-downtime failover. IC Role / Device Role / Timing Role: High-speed parallel boot ROM interfaced directly to MIPS/ARM SoC; 25 ns page read minimizes boot latency. Use Value: Top/bottom boot sector option (L7B = bottom-boot) allows safe dual-image storage with atomic bank switching for robust 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 |
|---|---|---|---|
| S29GL032N90TFI010 | 48-pin TSOP, 70 ns access, but uses 1.8/3.0 V dual supply and lacks EVIO pin; no deep power-down mode. | Requires separate 1.8 V rail; unsuitable where single 3.3 V supply and ultra-low standby current are mandatory. | Select only if existing design already supports dual-voltage IO and deep power-down is not required. |
| MX29GL320EBTI-70G | Same 48-pin TSOP, 70 ns, 3.0 V supply, but offers only uniform sector architecture (no boot sectors) and no secured silicon sector. | Cannot support boot-code partitioning or device-level authentication; limited to flat firmware storage. | Choose when boot-sector management and secure identity features are unnecessary and cost is primary driver. |
Compared with S29GL032N90TFI010 and MX29GL320EBTI-70G, the W29GL032CL7B uniquely combines bottom-boot sector layout, EVIO voltage flexibility, deep power-down, and secured silicon - making it optimal for safety-critical, power-constrained, and identity-aware embedded systems where firmware integrity and field upgradeability are essential.
Availability
W29GL032CL7B is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical imaging subsystems, and network switch boot ROMs requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for W29GL032CL7B 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 Flash, PSRAM, and audio codecs, serving industrial, automotive, and consumer markets since 1987.
The W29GL series was designed specifically for embedded systems requiring high-reliability, low-voltage parallel Flash with advanced protection, security, and power management features - targeting applications where firmware integrity and long-term field operation are non-negotiable.
FAQ
What is the package type and pin count for W29GL032CL7B?
The W29GL032CL7B is supplied in a 48-pin standard TSOP (12 × 20 mm) package, configured as a bottom-boot sector device per the 'L7B' suffix. This matches the mechanical and thermal specifications defined in Winbond datasheet Section 9.1 and Figure 3-4, and is validated for use in space-constrained industrial PCB layouts requiring surface-mount reliability.
Does W29GL032CL7B support both x8 and x16 data bus widths?
Yes, W29GL032CL7B supports configurable bus width via the #BYTE pin: when #BYTE = VIH, it operates in x16 mode using A0–A20 and DQ0–DQ15; when #BYTE = VIL, it operates in x8 mode using A-1–A20 (with DQ15 repurposed as A-1) and DQ0–DQ7. This dual-mode capability is confirmed in datasheet Sections 5 and 7.1.
How does the secured silicon sector function in W29GL032CL7B?
The secured silicon sector in W29GL032CL7B is a dedicated 256-byte region (128 words) that can be factory-locked or customer-programmed to store a unique 16-byte electronic serial number. Once locked, it cannot be erased or rewritten, providing immutable device identity for authentication and anti-counterfeiting - as detailed in datasheet Section 7.4 and Table 7-12.
What is the purpose of the EVIO pin on W29GL032CL7B?
The EVIO pin on W29GL032CL7B sets the input voltage threshold for all address, control, and data pins, allowing operation across 1.65 V to VCC. This enables seamless interfacing with mixed-voltage SoCs (e.g., 1.8 V core + 3.3 V I/O) without level shifters - a feature explicitly defined in datasheet Sections 2 and 7.2.20 and confirmed in Table 8-3 DC characteristics.
Can W29GL032CL7B be used in deep power-down mode, and what is its standby current?
Yes, W29GL032CL7B supports deep power-down mode activated via command sequence, reducing ICC to ≤1 µA (typical) as specified in datasheet Section 8.5.6 and Table 8-8. This mode retains all memory contents and register states, making it ideal for battery-powered devices requiring multi-year shelf life or infrequent wake-up events.
W29GL032CL7B 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)
W29GL032CL7B FAQ
1.How can I place an order for W29GL032CL7B through Aetrix?
Please submit a Request for Quotation (RFQ) for W29GL032CL7B 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 W29GL032CL7B reliable?
The price and inventory of W29GL032CL7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W29GL032CL7B is usually 5 days.
3.What payment methods are accepted for W29GL032CL7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W29GL032CL7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W29GL032CL7B?
W29GL032CL7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W29GL032CL7B 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 W29GL032CL7B?
For technical support, including W29GL032CL7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W29GL032CL7B requirements.
6.How does Aetrix verify that W29GL032CL7B is sourced from the original manufacturer or authorized distributors?
All W29GL032CL7B 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 W29GL032CL7B meets industry standards.
7.What is the process for return or replacement of W29GL032CL7B?
All W29GL032CL7B units undergo pre-shipment inspection (PSI). If there is an issue with W29GL032CL7B, 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 W29GL032CL7B part is unused and in its original packaging.
Return procedure for W29GL032CL7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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