My Inquiry
My Account
Winbond Electronics Corporation W25M512JWEIQ TR
- Part No.:
- W25M512JWEIQ TR
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
W25M512JWEIQ TR.pdf
- Description:
- IC FLASH 512MBIT SPI 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,108
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
W25M512JWEIQ TR from Winbond is a 1.8V serial MCP (Multi-Chip Package) flash memory combining two 256M-bit W25Q256JW-IQ dies in a single 8-pad WSON 8×6-mm package, supporting concurrent read-while-program/erase operations, 104 MHz SPI clock, and quad I/O interface with 4KB uniform sector architecture.
For engineers reviewing the W25M512JWEIQ TR datasheet, W25M512JWEIQ TR pinout, W25M512JWEIQ TR application, or W25M512JWEIQ TR equivalent, this device enables high-throughput firmware storage in space-constrained embedded systems requiring dual-die independence, 4-byte addressing, and hardware reset–capable variants via SOIC/TFBGA packages.
Technical Context
The W25M512JWEIQ TR implements SpiStack® architecture with software die select (C2h instruction) to isolate control of two stacked W25Q256JW-IQ dies sharing one SPI bus; each die has independent status registers, security registers, and 64-bit unique ID. Die selection is volatile and requires explicit C2h command before accessing either die's memory array.
It supports three address modes (3-byte default, 4-byte enabled via B7h, ADP bit non-volatile), full instruction set compatibility with W25Q series (including fast read quad I/O, sector/block erase, suspend/resume), and configurable output drive strength (DRV1/DRV0 bits) for signal integrity optimization across PCB trace lengths and load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 M-bit (2 × 256 M-bit), organized as two independent 32 MB arrays |
| Interface Speed | 104 MHz SPI clock → 208 MB/s dual I/O or 416 MB/s quad I/O effective throughput |
| Addressing Mode | Configurable 3-byte or 4-byte mode; ADP bit stores default on power-up |
| Erase Granularity | Uniform 4 KB sectors, 32 KB blocks, 64 KB blocks - enables fine-grained firmware partitioning |
| Endurance & Retention | 100,000 program/erase cycles per sector; 20-year data retention at +85°C |
| Supply Voltage | 1.7 V to 1.95 V - compatible with low-power 1.8 V system rails and LDOs |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade embedded applications |
Pinout & Package
W25M512JWEIQ TR is supplied in an 8-pad WSON 8×6-mm package (Package Code E), lead-free and RoHS-compliant, with exposed thermal pad (not electrically connected). Pin 4 is GND; Pin 8 is VCC; /CS, CLK, DI (IO0), DO (IO1), IO2, and IO3 are functional I/O pins - no /RESET pin in this variant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | /CS | Active-low chip select; must be asserted before any SPI transaction; controls bus arbitration in multi-device systems |
| 2 | DO (IO1) | Data output during standard/dual SPI reads; bidirectional I/O1 in dual/quad modes |
| 3 | IO2 | Bidirectional data line used only in quad SPI modes (fast read quad I/O, quad page program) |
| 4 | GND | Signal and power ground reference; connects to PCB ground plane for noise immunity |
| 5 | DI (IO0) | Data input during standard SPI writes; bidirectional I/O0 in dual/quad modes |
| 6 | CLK | Input-only serial clock; edge-triggered sampling; max 104 MHz frequency defines timing budget |
| 7 | IO3 | Bidirectional data line used only in quad SPI modes; enables full x4 bandwidth utilization |
| 8 | VCC | 1.8 V core supply; requires local 1 µF ceramic decoupling capacitor within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Concurrent Operations | Enables simultaneous program/erase on one die while reading from the other - eliminates wait states in OTA update pipelines |
| Software Die Select (C2h) | Allows runtime switching between two independent 32 MB arrays without hardware reconfiguration or PCB changes |
| Quad I/O Interface | Delivers up to 52 MB/s continuous read throughput using single-ended signals - avoids differential routing complexity |
| 4KB Uniform Sector Architecture | Supports atomic firmware patching and parameter logging without erasing unrelated code regions |
| Security Register Set | Three 256-byte OTP-lockable security registers enable secure key storage and boot authentication logic |
| SFDP Support | Standard Flash Discovery Parameter table allows automatic driver configuration in Linux/RTOS without hard-coded parameters |
Applications
| Firmware Storage in Edge AI Modules | Secure Boot for Industrial PLCs |
|---|---|
|
Use Scenario: Storing neural network models and inference engine binaries in compact edge AI accelerators with limited board area. IC Role / Device Role / Timing Role: Primary non-volatile code storage with concurrent read-while-program capability to enable seamless model updates without halting inference. Use Value: Dual-die architecture reduces OTA update time by enabling background programming while executing current model - critical for zero-downtime deployments. |
Use Scenario: Authenticating bootloader and firmware images in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Trusted storage for public keys, hash digests, and encrypted firmware partitions; accessed during cold boot and runtime integrity checks. Use Value: OTP-locked security registers prevent tampering with cryptographic keys; 20-year retention ensures long-term field reliability without recalibration. |
| Automotive Telematics Firmware Hub | Medical IoT Sensor Data Logger |
|
Use Scenario: Hosting modem firmware, GNSS stack, and cellular protocol binaries in automotive telematics control units (TCUs). IC Role / Device Role / Timing Role: High-density, low-pin-count flash providing concurrent access to multiple firmware domains (modem, GPS, CAN gateway) via software die select. Use Value: 4-byte addressing supports >16 MB firmware images; 104 MHz quad I/O meets AEC-Q100 transient response requirements for rapid boot. |
Use Scenario: Logging calibrated sensor readings and diagnostic timestamps in portable medical devices with strict power budgets. IC Role / Device Role / Timing Role: Low-power (10 µA standby) non-volatile storage for time-stamped physiological data; 4 KB sectors align with packetized transmission buffers. Use Value: Uniform sector erase enables deterministic write latency; 1.8 V operation extends battery life in coin-cell–powered wearable designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial MCP flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| W25M512JWBIQ TR | Same die stack and density, but in 24-ball TFBGA 8×6-mm (Package Code B) with /RESET pin and extended temperature range (−40°C to +105°C) | Required where hardware reset supervision or automotive under-hood thermal margin is needed | Select W25M512JWBIQ TR when system-level reset sequencing or AEC-Q100 Grade 2 compliance is mandatory |
| W25M512JWFIQ TR | Same die stack and density, but in 16-pin SOIC 300-mil (Package Code F) with dedicated /RESET pin and same industrial temp range | Preferred for legacy PCB layouts, manual assembly, or prototyping where TFBGA rework is impractical | Select W25M512JWFIQ TR for through-hole-compatible designs or when /RESET signal routing simplifies system-level reset management |
Compared with W25M512JWEIQ TR, the TFBGA and SOIC variants add hardware reset capability and different mechanical integration paths - the WSON version prioritizes minimal footprint and cost in high-volume consumer and industrial modules where reset is managed externally.
Availability
W25M512JWEIQ TR is available at Aetrix Electronics and suitable for firmware storage in edge AI modules, secure boot for industrial PLCs, and automotive telematics systems requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for W25M512JWEIQ TR 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 DRAM, mobile DRAM, and serial flash memory solutions for embedded, communications, and consumer markets.
The W25M SpiStack® product line was designed to deliver higher density and concurrent operation capability in standard low-pin-count packages - targeting space-constrained IoT, automotive, and industrial control applications where traditional parallel NOR or multi-chip solutions are impractical.
FAQ
Does W25M512JWEIQ TR support hardware reset?
No, W25M512JWEIQ TR does not include a /RESET pin - it is exclusive to the SOIC (W25M512JWFIQ TR) and TFBGA (W25M512JWBIQ TR) variants. Reset functionality for W25M512JWEIQ TR must be implemented externally via power cycling or software commands (66h/99h). The W25M512JWEIQ TR datasheet confirms absence of /RESET in its 8-pad WSON pinout.
What is the maximum clock frequency supported by W25M512JWEIQ TR?
W25M512JWEIQ TR supports up to 104 MHz for standard, dual, and quad SPI operations. At this frequency, quad I/O achieves up to 416 MB/s effective bandwidth (104 MHz × 4 bits), and continuous read throughput reaches 52 MB/s. These values are specified in the AC Electrical Characteristics section (Section 9.6) of the official Winbond datasheet for W25M512JWEIQ TR.
How does concurrent operation work in W25M512JWEIQ TR?
Concurrent operation in W25M512JWEIQ TR means one die can execute program or erase while the other die simultaneously serves read requests - enabled by independent status registers and software die select (C2h). This eliminates bus contention because only one die is active on the shared SPI interface at any time. The feature is confirmed in Section 1 (General Descriptions) and Section 2 (Features) of the W25M512JWEIQ TR datasheet.
Is W25M512JWEIQ TR pin-compatible with W25Q256JW-IQ?
No, W25M512JWEIQ TR is not pin-compatible with W25Q256JW-IQ. Although both use WSON 8×6-mm packaging, W25M512JWEIQ TR repurposes IO2 and IO3 for quad I/O, whereas W25Q256JW-IQ uses those pins as NC or alternate functions. The W25M512JWEIQ TR pinout (Figure 1a) explicitly assigns IO2 and IO3 as active I/O lines - incompatible with single-die W25Q256JW-IQ layouts.
What security features are implemented in W25M512JWEIQ TR?
W25M512JWEIQ TR includes three 256-byte security registers with OTP lock bits (LB3–LB1), individual block/sector lock (36h/39h), global lock (7Eh/98h), top/bottom/complement protection (TB, CMP), and 64-bit unique die ID. All are documented in Sections 7.1.8 and 8.2.45–8.2.49 of the W25M512JWEIQ TR datasheet. No external crypto accelerator is required for basic key storage or firmware signature verification.
W25M512JWEIQ TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 512Mbit
- Memory Organization:
- 64M x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 7 ns
- Voltage - Supply:
- 1.7V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (8x6)
W25M512JWEIQ TR FAQ
1.How can I place an order for W25M512JWEIQ TR through Aetrix?
Please submit a Request for Quotation (RFQ) for W25M512JWEIQ TR 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 W25M512JWEIQ TR reliable?
The price and inventory of W25M512JWEIQ TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25M512JWEIQ TR is usually 5 days.
3.What payment methods are accepted for W25M512JWEIQ TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25M512JWEIQ TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25M512JWEIQ TR?
W25M512JWEIQ TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25M512JWEIQ TR 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 W25M512JWEIQ TR?
For technical support, including W25M512JWEIQ TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25M512JWEIQ TR requirements.
6.How does Aetrix verify that W25M512JWEIQ TR is sourced from the original manufacturer or authorized distributors?
All W25M512JWEIQ TR 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 W25M512JWEIQ TR meets industry standards.
7.What is the process for return or replacement of W25M512JWEIQ TR?
All W25M512JWEIQ TR units undergo pre-shipment inspection (PSI). If there is an issue with W25M512JWEIQ TR, 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 W25M512JWEIQ TR part is unused and in its original packaging.
Return procedure for W25M512JWEIQ TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25M512JWEIQ TR Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
