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Winbond Electronics Corporation W29GL032CH7T
- Part No.:
- W29GL032CH7T
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 56-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
W29GL032CH7T.pdf
- Description:
- IC FLASH 32MBIT PARALLEL 56TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,340
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Product details
Overview
W29GL032CH7T 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 a 16-word write buffer and 8-word page read buffer, and is used in embedded firmware storage for industrial controllers and network boot loaders.
For engineers reviewing the W29GL032CH7T datasheet, W29GL032CH7T pinout, W29GL032CH7T application, or W29GL032CH7T equivalent, key selection criteria include sector protection granularity, CFI interface compatibility, deep power-down mode timing, and EVIO voltage scaling behavior across temperature ranges.
Technical Context
The W29GL032CH7T implements a dual-mode address/data bus with DQ15/A-1 serving as either data I/O (word mode) or address input (byte mode), controlled by #BYTE logic level. Its Enhanced Variable IO (EVIO) input sets all input/output voltage thresholds between 1.65 V and VCC, enabling interoperability with mixed-voltage host systems.
It features hardware-based sector protection using both dynamic lock registers and individual non-volatile bits, plus a dedicated 128-word secured silicon sector with factory-programmable or customer-lockable 8-word serial number. Erase and program operations support suspend/resume, polling, and toggling status detection via RY/#BY.
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 access; enables real-time firmware fetch in MCU boot sequences |
| Page Read Speed | 25 ns; reduces instruction fetch latency during burst code execution |
| Write Buffer Size | 16-word (32-byte); cuts multi-word programming time by up to 4× vs. single-word writes |
| Erase Endurance | 100,000 cycles per sector; supports field firmware updates over 10+ years |
| Data Retention | 20 years at +85°C; ensures long-term reliability in industrial thermal environments |
| Supply Voltage | 2.7–3.6 V; compatible with 3.3 V system rails and brown-out tolerant operation |
| Operating Temp | –40°C to +85°C; qualified for extended-temperature embedded applications |
Pinout & Package
W29GL032CH7T is packaged in a 48-pin TSOP (12 × 20 mm), configured for bottom-boot sector architecture. Pin assignments are validated per Figure 3-4 and Table 5-1 of the August 2013 Revision H datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A20 | Address Inputs | 21-bit address bus; A-1 alias on DQ15 in byte mode (#BYTE = VIL) |
| DQ0–DQ14 | Data I/O (X8/X16) | 8-bit or 16-bit bidirectional data path; DQ15 serves as A-1 in byte mode |
| #CE | Chip Enable | Active-low chip select; controls device activation and power state transitions |
| #OE | Output Enable | Active-low output gate; isolates data bus during standby or write cycles |
| #WE | Write Enable | Active-low write strobe; latches address/data on falling edge for command sequencing |
| #BYTE | Bus Width Select | High = word mode (A20–A0, DQ15–DQ0); Low = byte mode (A20–A-1, DQ7–DQ0) |
| #WP/ACC | Write Protect / Acceleration | VIL enables hardware sector lock; VIH + VHH accelerates programming throughput |
| RY/#BY | Ready/Busy Status | Open-drain output; low = operation in progress; high = completion or error flag |
| EVIO | Variable IO Reference | Sets input threshold and output drive strength; must be tied to VCC or 1.65–VCC |
| #RESET | Hardware Reset | Asynchronous active-low reset; forces device into read mode and clears internal state |
Key Features
| Feature | Design Value |
|---|---|
| CFI Interface Support | Enables automatic identification and parameter discovery by host BIOS/bootloader without hard-coded timing tables |
| Secured Silicon Sector | 128-word (256-byte) factory- or customer-programmable region for immutable device ID and security keys |
| Enhanced Sector Protection | Combines volatile lock register and non-volatile individual sector bits for flexible, layered firmware integrity control |
| Deep Power Down Mode | Reduces ICC to ≤1 µA; extends battery life in always-on embedded systems during idle periods |
| Erase/Program Suspend | Allows interrupting background erase or program to service higher-priority reads, then resume without data loss |
| Accelerated Programming | Applying VHH to #WP/ACC cuts typical word program time by ~50%, improving production line throughput |
Applications
| Industrial PLC Firmware Storage | Network Router Boot Image |
|---|---|
Use Scenario: Storing and executing firmware for programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Non-volatile code storage with fast random access and robust sector protection to prevent accidental overwrite during field updates. Use Value: 70 ns access time ensures deterministic boot latency; 20-year data retention guarantees firmware integrity over equipment lifetime. | Use Scenario: Holding boot loader and primary OS image in enterprise-grade routers requiring secure, field-upgradable firmware. IC Role / Device Role / Timing Role: CFI-compliant parallel Flash providing standardized interface for bootloader initialization and secure silicon sector for MAC/key binding. Use Value: Secured silicon sector enables hardware-rooted device identity; suspend/resume allows concurrent diagnostics and firmware update. |
| Medical Diagnostic Equipment BIOS | Automotive Infotainment Module |
Use Scenario: Hosting BIOS and calibration data in FDA-regulated diagnostic imaging systems where firmware integrity is safety-critical. IC Role / Device Role / Timing Role: High-reliability NOR Flash with individual sector lock and hardware write protect (#WP/ACC) for tamper-resistant configuration storage. Use Value: 100,000 erase/program cycles support repeated calibration updates; deep power-down mode meets low-quiescent current requirements. | Use Scenario: Storing infotainment firmware and UI assets in automotive head units subject to AEC-Q100 Grade 3 qualification. IC Role / Device Role / Timing Role: Parallel Flash with extended temperature range (–40°C to +85°C) and EVIO support for seamless integration with 1.8 V/3.3 V SoC buses. Use Value: EVIO scaling ensures signal integrity across voltage domains; boot-sector architecture enables safe dual-image OTA 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, same density and 70 ns access, but uses standard 3.3 V I/O (no EVIO); no deep power-down mode | Lacks EVIO flexibility and ultra-low-power sleep; requires fixed 3.3 V host interface | Choose when EVIO scaling and sub-µA standby are not required, and legacy 3.3 V design compatibility is prioritized. |
| MX29GL320EHTI-90G | 48-pin TSOP, identical 32 Mbit density and 70 ns timing, but supports only uniform sector architecture (no boot sectors) | No top/bottom boot sector layout; unsuitable for dual-image or fail-safe boot designs | Select when firmware partitioning does not require protected boot sectors, and CFI + write buffer features are sufficient. |
Compared with S29GL032N90TFI010 and MX29GL320EHTI-90G, the W29GL032CH7T uniquely combines EVIO voltage adaptability, deep power-down, and boot-sector protection-making it optimal for next-generation embedded systems demanding mixed-voltage interoperability and fail-safe firmware architecture.
Availability
W29GL032CH7T is available at Aetrix Electronics and suitable for industrial PLCs, network routers, medical diagnostic BIOS, automotive infotainment modules, and embedded boot loader applications requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for W29GL032CH7T 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 for industrial, communications, and consumer markets.
The W29GL series is designed specifically for embedded firmware storage applications requiring high reliability, fast random access, and advanced data protection-targeting boot code, BIOS, and configuration storage in resource-constrained systems.
FAQ
What is the correct voltage range for EVIO on the W29GL032CH7T?
The EVIO pin on the W29GL032CH7T accepts 1.65 V to VCC (max 3.6 V) and sets input thresholds and output drive strength for all address, control, and DQ signals. It must be externally biased-floating is not allowed. For W29GL032CH7T designs using 3.3 V VCC, EVIO is typically tied to 3.3 V or 1.8 V depending on host interface voltage; mismatched EVIO/VCC may cause timing violations or bus contention.
Does the W29GL032CH7T support true 16-bit word mode operation?
Yes, the W29GL032CH7T supports true 16-bit word mode when #BYTE is driven high (VIH), enabling full 16-bit data transfers on DQ15–DQ0 with addressing from A20 to A0. In this mode, DQ15 functions exclusively as data I/O-not as A-1-and the device operates as a 2M × 16 organization. This is confirmed in Section 5 (Pin Description) and Table 7-1 of the W29GL032CH7T datasheet.
How does hardware write protection work on the W29GL032CH7T?
Hardware write protection on the W29GL032CH7T is activated by pulling #WP/ACC low (VIL), which locks either the top two or bottom two sectors depending on boot-sector configuration (top/bottom vs. high/low). This protection is independent of software sector locks and persists through power cycles. The W29GL032CH7T datasheet specifies that #WP/ACC=VIL provides unconditional protection of outmost sectors-even if software protection bits are cleared.
Can the secured silicon sector of the W29GL032CH7T be reprogrammed after factory locking?
No-the secured silicon sector of the W29GL032CH7T can be factory locked (permanently programmed and protected at wafer/test) or left customer-lockable (unprogrammed and unprotected at shipment). Once factory locked, the sector is read-only and cannot be erased or rewritten. Customer-lockable units allow one-time programming and permanent locking via command sequence, after which the sector becomes immutable-verified in Section 7.4 and Table 7-12 of the W29GL032CH7T datasheet.
What is the minimum pulse width for #RESET on the W29GL032CH7T?
The minimum #RESET pulse width for the W29GL032CH7T is 100 ns, as specified in Table 8-5 (AC Characteristics) under "#RESET Timing Waveform" (Figure 8-7). A valid reset requires #RESET to be held low for ≥100 ns while VCC is stable within operating range; shorter pulses may fail to clear internal state or force read mode reliably. This timing applies across all temperature and voltage conditions for W29GL032CH7T operation.
W29GL032CH7T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- -
- Package/Case:
- 56-TFSOP (0.724", 18.40mm Width)
- 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:
- 56-TSOP
W29GL032CH7T FAQ
1.How can I place an order for W29GL032CH7T through Aetrix?
Please submit a Request for Quotation (RFQ) for W29GL032CH7T 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 W29GL032CH7T reliable?
The price and inventory of W29GL032CH7T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W29GL032CH7T is usually 5 days.
3.What payment methods are accepted for W29GL032CH7T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W29GL032CH7T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W29GL032CH7T?
W29GL032CH7T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W29GL032CH7T 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 W29GL032CH7T?
For technical support, including W29GL032CH7T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W29GL032CH7T requirements.
6.How does Aetrix verify that W29GL032CH7T is sourced from the original manufacturer or authorized distributors?
All W29GL032CH7T 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 W29GL032CH7T meets industry standards.
7.What is the process for return or replacement of W29GL032CH7T?
All W29GL032CH7T units undergo pre-shipment inspection (PSI). If there is an issue with W29GL032CH7T, 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 W29GL032CH7T part is unused and in its original packaging.
Return procedure for W29GL032CH7T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W29GL032CH7T Tags
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M24C02-WMN6TP
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