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Winbond Electronics Corporation W29GL032CT7S
- Part No.:
- W29GL032CT7S
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
W29GL032CT7S.pdf
- Description:
- IC FLASH 32MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,101
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Product details
Overview
W29GL032CT7S 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, features 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 W29GL032CT7S datasheet, W29GL032CT7S pinout, W29GL032CT7S application, or W29GL032CT7S equivalent, key selection criteria include sector protection granularity (uniform vs. top/bottom boot), EVIO voltage flexibility (1.65 V to VCC), deep power-down current (≤1 µA), CFI compliance for system auto-configuration, and hardware write protect (#WP/ACC) behavior under VHH acceleration.
Technical Context
The W29GL032CT7S implements a dual-mode address/data bus with DQ15/A−1 serving as either data I/O (word mode) or A−1 address input (byte mode), controlled by #BYTE logic level. Its internal architecture includes a 64-sector uniform layout or configurable top/bottom boot sector map, with sector erase times of 0.5 s typical and chip erase at 20 s.
It supports CFI (Common Flash Interface) mode for host-system identification of geometry and command sets, and integrates Enhanced Variable IO (EVIO) control to dynamically scale input/output thresholds across 1.65–VCC range-enabling interoperability with mixed-voltage microcontrollers without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 Mbit (4 MB); supports firmware image storage for ARM Cortex-M7-based industrial gateways. |
| Access Time | 70 ns random read; enables direct XIP (eXecute-In-Place) execution from flash in real-time PLC applications. |
| Page Read Speed | 25 ns; reduces instruction fetch latency during burst code execution in boot ROM sequences. |
| Write Buffer Size | 16-word (32-byte); cuts multi-word programming time by >60% versus single-word writes in OTA update routines. |
| Deep Power-Down Current | ≤1 µA at VCC = 3.0 V; extends battery life in always-on edge sensor nodes with infrequent firmware updates. |
| Data Retention | 20 years at 85°C; meets long-term reliability requirements for automotive telematics modules. |
| Erase/Program Endurance | 100,000 cycles; supports field-upgradable bootloader partitions in medical diagnostic equipment. |
| Operating Voltage | 2.7–3.6 V; compatible with standard 3.3 V LDOs and tolerant of brown-out conditions in factory automation systems. |
Pinout & Package
W29GL032CT7S is packaged in 48-pin TSOP (12 × 20 mm), configured for bottom-boot sector architecture per ordering suffix 'T7S' (Top/Bottom Boot, 70 ns, Standard grade, TSOP).
| 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–DQ14 | Data I/O (x8) | 8-bit bidirectional data path; DQ15 functions as A−1 in byte mode (#BYTE = VIL). |
| #CE | Chip Enable | Active-low chip select; enables device for read/write when asserted with valid #OE/#WE timing. |
| #OE | Output Enable | Controls output buffer tri-state; allows shared bus operation with other peripherals in MCU subsystems. |
| #WE | Write Enable | Initiates write cycles; latches address/data on rising edge per JEDEC-compliant timing. |
| #WP/ACC | Write Protect / Acceleration | Hardware lock for top/bottom sectors; applies VHH (12 V) to accelerate programming during production. |
| #RESET | Hardware Reset | Asynchronous reset pin; forces device into read mode and clears internal state machines. |
| RY/#BY | Ready/Busy Status | Open-drain output indicating active erase/program; used for polling or interrupt-driven firmware flow control. |
| #BYTE | Byte/Word Mode Select | Configures bus width: VIH = 16-bit word mode (A20–A0), VIL = 8-bit byte mode (A20–A−1). |
| EVIO | Enhanced Variable IO Supply | Reference voltage for all I/O thresholds; set to 1.8 V or 3.3 V to match host controller interface levels. |
Key Features
| Feature | Design Value |
|---|---|
| CFI (Common Flash Interface) | Enables automatic detection of device geometry, command set, and sector map by host BIOS/bootloader without hard-coded parameters. |
| Secured Silicon Sector | 256-byte factory-programmable area with 16-byte electronic serial number; used for device binding and anti-cloning in payment terminals. |
| Enhanced Sector Protection | Combines volatile (DPB) and non-volatile (IPB) lock bits per sector; supports field-reconfigurable protection without full chip erase. |
| Erase/Program Suspend | Allows read access during background erase/program operations-critical for real-time HMI display updates during firmware patching. |
| Deep Power-Down Mode | Enters ultra-low-power state (<1 µA) via command sequence; retains data and resumes instantly on #RESET or #CE assertion. |
| Accelerated Programming | VHH applied to #WP/ACC reduces word program time to ≤10 µs; improves throughput in high-volume manufacturing test environments. |
Applications
| Industrial PLC Firmware Storage | Network Router Boot Loader |
|---|---|
|
Use Scenario: Stores boot code and runtime 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 XIP capability; provides deterministic 70 ns instruction fetch timing for deterministic scan-cycle execution. Use Value: Uniform sector architecture enables atomic firmware updates without disrupting I/O scanning; 20-year data retention ensures lifetime operation without field replacement. |
Use Scenario: Hosts U-Boot and kernel images in enterprise-grade routers requiring secure, field-upgradable boot firmware. IC Role / Device Role / Timing Role: Primary boot memory mapped to CPU address space; supports CFI auto-detection for flexible board bring-up across multiple SoC platforms. Use Value: Secured Silicon Sector stores immutable root-of-trust keys; enhanced sector protection isolates bootloader from OS partition updates. |
| Medical Imaging Device Configuration | Automotive ADAS Camera Module |
|
Use Scenario: Stores calibration tables, DICOM metadata templates, and safety-critical configuration profiles in portable ultrasound units. IC Role / Device Role / Timing Role: Parameter storage with hardware write protection; #WP/ACC pin physically tied to chassis ground to prevent accidental reprogramming. Use Value: Bottom-boot sector layout reserves lowest 32 KB for immutable startup config; 100,000 endurance cycles support daily recalibration logs. |
Use Scenario: Holds camera firmware, lens correction maps, and CAN message routing tables in rear-view and surround-view ADAS modules. IC Role / Device Role / Timing Role: Dual-function memory: executes boot code (XIP) and stores runtime lookup tables accessed via DMA bursts. Use Value: Page read buffer (8-word) accelerates pixel correction table fetches; deep power-down mode minimizes quiescent current during vehicle sleep states. |
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, 90 ns access, no EVIO, fixed 3.3 V I/O thresholds | Lacks voltage-flexible I/O; requires external level shifting for 1.8 V microcontrollers | Choose for cost-sensitive designs where host I/O matches 3.3 V and EVIO is unnecessary. |
| MX29GL320EHTI-90G | 48-pin TSOP, 90 ns, supports CFI but no deep power-down mode | Higher standby current (30 µA vs. 1 µA); unsuitable for battery-backed systems | Prefer when legacy compatibility with older MX29GL family toolchains is required and low-power sleep is not needed. |
Compared with W29GL032CT7S, S29GL032N90TFI010 trades EVIO flexibility and 70 ns speed for lower unit cost, while MX29GL320EHTI-90G sacrifices deep power-down capability to maintain pinout compatibility with prior-generation Spansion designs-making W29GL032CT7S optimal for new designs demanding low-power operation and mixed-voltage interfacing.
Availability
W29GL032CT7S is available at Aetrix Electronics and suitable for industrial PLC firmware storage, network router boot loader deployment, and medical imaging device configuration requiring stable component supply across extended product lifecycles.
Supply support for W29GL032CT7S 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, with over 30 years of foundry-independent design expertise.
The W29GL series targets embedded systems requiring reliable, high-speed parallel Flash for code storage and execution, emphasizing robustness in extended temperature ranges and simplified system integration via CFI and EVIO.
FAQ
What is the function of the EVIO pin on the W29GL032CT7S?
The EVIO pin on the W29GL032CT7S sets the reference voltage for all input and output logic thresholds, allowing dynamic adaptation between 1.65 V and VCC. This eliminates external level shifters when interfacing with 1.8 V or 3.3 V microcontrollers. For W29GL032CT7S, EVIO must be externally biased-typically to 1.8 V for mixed-signal SoCs-and is not internally connected in TSOP packages.
Does the W29GL032CT7S support true XIP (eXecute-In-Place) operation?
Yes, the W29GL032CT7S supports XIP due to its 70 ns random access time and asynchronous parallel interface. When mapped into the processor's memory space with proper wait-state configuration, the CPU can fetch and execute instructions directly from W29GL032CT7S without copying to RAM-reducing boot latency and SRAM usage in resource-constrained microcontrollers.
How does the #WP/ACC pin operate in accelerated programming mode for the W29GL032CT7S?
When VHH (~12 V) is applied to the #WP/ACC pin of the W29GL032CT7S during programming, it activates internal high-voltage charge pumps, reducing typical word program time from 20 µs to ≤10 µs. This acceleration is used exclusively in production test environments and requires dedicated HV circuitry-not for field operation.
What sector architecture does the W29GL032CT7S use based on its part number suffix 'T7S'?
The 'T' in W29GL032CT7S denotes Top/Bottom Boot sector architecture, meaning the memory array includes eight 4 KB sectors at either the highest or lowest address range, plus 63 uniform 64 KB sectors. This layout enables independent protection of boot code and application firmware-critical for secure firmware updates in networking equipment.
Can the W29GL032CT7S enter deep power-down mode using only standard 3.0 V supply?
Yes, the W29GL032CT7S enters deep power-down mode using only its nominal 3.0 V supply (2.7–3.6 V). A specific 6-cycle command sequence written to address 0x555/0x2AA triggers the mode, reducing ICC to ≤1 µA. The device exits instantly upon #RESET assertion or #CE activation-no voltage ramping or auxiliary supplies required.
W29GL032CT7S 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
W29GL032CT7S FAQ
1.How can I place an order for W29GL032CT7S through Aetrix?
Please submit a Request for Quotation (RFQ) for W29GL032CT7S 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 W29GL032CT7S reliable?
The price and inventory of W29GL032CT7S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W29GL032CT7S is usually 5 days.
3.What payment methods are accepted for W29GL032CT7S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W29GL032CT7S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W29GL032CT7S?
W29GL032CT7S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W29GL032CT7S 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 W29GL032CT7S?
For technical support, including W29GL032CT7S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W29GL032CT7S requirements.
6.How does Aetrix verify that W29GL032CT7S is sourced from the original manufacturer or authorized distributors?
All W29GL032CT7S 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 W29GL032CT7S meets industry standards.
7.What is the process for return or replacement of W29GL032CT7S?
All W29GL032CT7S units undergo pre-shipment inspection (PSI). If there is an issue with W29GL032CT7S, 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 W29GL032CT7S part is unused and in its original packaging.
Return procedure for W29GL032CT7S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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