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Winbond Electronics Corporation W25R64JVSSIQ
- Part No.:
- W25R64JVSSIQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25R64JVSSIQ.pdf
- Description:
- IC FLASH 64MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,554
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Product details
Overview
W25R64JVSSIQ from Winbond is a 64M-bit (8MB) serial NOR flash memory with Dual/Quad SPI interface and Replay Protection Monotonic Counter (RPMC) security. It operates from 2.7V–3.6V, supports up to 133MHz clock (532MHz Quad I/O equivalent), features uniform 4KB sectors, 100,000+ program/erase cycles, and 20-year data retention. It is used for secure code execution (XIP), firmware storage, and trusted boot in embedded controllers.
For engineers reviewing the W25R64JVSSIQ datasheet, W25R64JVSSIQ pinout, W25R64JVSSIQ application, or W25R64JVSSIQ equivalent, key selection criteria include Quad SPI bandwidth, RPMC cryptographic integrity, individual block locking, 64-bit unique ID, and SOIC-208 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The W25R64JVSSIQ implements a standard SPI Mode 0/3 interface with configurable Dual/Quad I/O operation using IO0–IO3 pins. Its internal architecture includes a 256-byte page buffer, three 256-byte OTP-locked security registers, and four 32-bit monotonic counters managed via HMAC-SHA-256 for replay-protected read/write transactions.
RPMC operations require dedicated command sequences (e.g., 9Bh + 00h–03h) to write root keys, update HMAC keys, increment or read counters - all enforced by hardware-level cryptographic validation. Write protection is implemented through volatile/non-volatile status register bits (BP2–BP0, TB, SEC, CMP, SRL, WPS), individual block lock bits (32 sectors + 126 blocks), and power-supply lock-down during VCC ramp.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 M-bit (8 MB) NOR flash with uniform 4 KB sectors and 64 KB blocks |
| Interface Speed | Up to 133 MHz SPI clock; 532 MHz effective throughput in Quad I/O mode (EBh/E7h) |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3 V logic systems without level shifting |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded applications |
| Endurance & Retention | ≥100,000 program/erase cycles; ≥20 years data retention at 85°C |
| Security Features | Replay Protection Monotonic Counter (RPMC), 64-bit unique ID, 3×256-byte OTP-lockable security registers |
| Power Consumption | 4 mA active current (typ.), <1 µA power-down current (typ.) - enables low-power firmware updates |
Pinout & Package
W25R64JVSSIQ is housed in an 8-pin SOIC 208-mil (Package Code SS) surface-mount package with gull-wing leads, RoHS-compliant finish, and JEDEC-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS | Chip Select Input | Active-low enable; high-impedance outputs when deasserted; must track VCC during power-up/down |
| IO0 | Bidirectional Data I/O (DI/DO) | Used for Standard/Dual SPI input/output; primary data line for instruction/address/data transfer |
| IO1 | Bidirectional Data I/O | Enables Dual SPI reads/writes; becomes active in Fast Read Dual Output (3Bh) and BBh modes |
| GND | Ground Reference | System common return path; required for stable voltage reference and noise immunity |
| VCC | Power Supply | Single 2.7–3.6 V supply; internal regulators derive core voltages; supports brown-out reset |
| CLK | Serial Clock Input | Edge-triggered timing source; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) |
| IO2 | Bidirectional Data I/O | Activated only in Quad SPI mode (6Bh, EBh, E7h); expands data bus to 4-bit parallel transfer |
| IO3 | Bidirectional Data I/O | Completes Quad SPI interface; enables full 4-line bidirectional data path for maximum throughput |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI XIP Support | Enables direct code execution from flash via EBh/E7h instructions - eliminates RAM copy overhead |
| RPMC Cryptographic Integrity | HMAC-SHA-256–based counter verification prevents replay attacks on firmware updates and secure boot |
| Individual Block Locking | 126 × 64 KB blocks + 32 × 4 KB sectors each have independent lock bits - enables fine-grained firmware partitioning |
| Volatile/Non-Volatile Status Control | Status Register-1/2/3 support both volatile (power-cycle reset) and non-volatile (OTP) bit programming for flexible protection schemes |
| 64-Bit Unique ID | Factory-programmed per-device serial number - enables device authentication and secure provisioning |
| Erase/Program Suspend | 75h/7Ah commands pause ongoing erase/program to service urgent reads - improves real-time system responsiveness |
Applications
| Secure Boot Firmware Storage | Industrial PLC Code Execution |
|---|---|
|
Use Scenario: Storing signed bootloader images and root-of-trust keys in edge gateways requiring tamper-resistant firmware integrity. IC Role / Device Role / Timing Role: NOR flash memory providing authenticated, replay-protected read access to boot code via RPMC-monitored read sequences. Use Value: Prevents unauthorized firmware modification and replay-based injection attacks during cold boot or OTA updates. |
Use Scenario: Hosting real-time control logic and configuration data in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: High-reliability serial flash delivering deterministic 133 MHz Quad SPI access for deterministic XIP execution of ladder logic. Use Value: Eliminates boot latency from RAM loading while maintaining >20-year data retention under thermal cycling. |
| Medical Device Parameter Archiving | Automotive Telematics Firmware |
|
Use Scenario: Logging calibrated sensor offsets and regulatory audit trails in Class II medical instruments with traceable write history. IC Role / Device Role / Timing Role: Secure non-volatile storage with individual sector locking - isolates calibration data from application firmware partitions. Use Value: Ensures FDA 21 CFR Part 11 compliance via immutable, time-stamped parameter records with hardware-enforced write protection. |
Use Scenario: Storing OTA-updatable infotainment firmware and vehicle-specific configuration profiles in automotive telematics modules. IC Role / Device Role / Timing Role: AEC-Q100–qualified flash supporting fast Quad I/O reads and RPMC-verified firmware signature checks before execution. Use Value: Meets ISO/SAE 21434 cybersecurity requirements with hardware-backed monotonic counters for secure update sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L6433FZNI-10G | No RPMC; lacks monotonic counters and HMAC-SHA-256 engine; supports only standard/dual/quad SPI | Suitable for cost-sensitive designs where cryptographic replay protection is not required | Select when security certification (e.g., Common Criteria, FIPS) is not mandated and legacy SPI compatibility is prioritized |
| S25FL164K0XMFI010 | Includes HyperBus interface option; no RPMC; uses different SFDP layout and security register structure | Targeted at high-bandwidth applications needing >166 MHz DDR interface; less suited for resource-constrained microcontrollers | Choose for systems with Cypress-compatible controllers and need for faster random access than Quad SPI provides |
Compared with MX25L6433FZNI-10G and S25FL164K0XMFI010, the W25R64JVSSIQ uniquely delivers hardware-enforced RPMC for secure firmware updates, making it the only option among the three qualified for ISO/SAE 21434–aligned automotive and medical boot architectures.
Availability
W25R64JVSSIQ is available at Aetrix Electronics and suitable for industrial control systems, secure boot implementations, and automotive telematics requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for W25R64JVSSIQ 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 manufacturer specializing in specialty memory solutions including NOR/NAND flash, SRAM, and mobile DRAM.
The W25R series was designed specifically for secure embedded applications demanding cryptographic integrity, individual block protection, and industrial-grade reliability - targeting automotive, medical, and industrial IoT firmware storage.
FAQ
What is the purpose of the /RESET pin on W25R64JVSSIQ?
The W25R64JVSSIQ does not include a dedicated /RESET pin in its 8-pin SOIC-208-mil package (SS). The /RESET functionality described in the datasheet applies only to the 16-pin SOIC variant. For W25R64JVSSIQ, reset is performed exclusively via software command sequence: Enable Reset (66h) followed by Reset Device (99h), which restores all registers to power-on state within ~30 µs.
Does W25R64JVSSIQ support Execute-in-Place (XIP) operation?
Yes, W25R64JVSSIQ supports XIP via Fast Read Quad I/O (EBh) and Word Read Quad I/O (E7h) instructions. These enable direct CPU execution from flash memory without copying to RAM, reducing boot time and memory footprint. XIP requires controller support for Quad SPI mode and proper address mapping - confirmed functional across ARM Cortex-M and RISC-V platforms.
How is Replay Protection Monotonic Counter (RPMC) implemented in W25R64JVSSIQ?
W25R64JVSSIQ implements RPMC using four independent 32-bit monotonic counters addressed via 8-bit Counter_Address. Each counter is incremented only through authenticated HMAC-SHA-256–signed commands (9Bh + 02h), and its value is verified on every protected read (96h). The root key is written once via 9Bh + 00h and stored in OTP-locked security registers - preventing rollback or spoofing.
What write protection mechanisms are available on W25R64JVSSIQ?
W25R64JVSSIQ offers layered write protection: (1) Status register bits (BP2–BP0, TB, SEC, CMP, SRL, WPS) for region-based locking; (2) Individual Block/Sector Lock bits (32 sectors + 126 blocks) activated when WPS=1; (3) Power-supply lock-down during VCC ramp; (4) OTP locking of security registers; and (5) Software Write Enable (06h) gating - all enforced in hardware without firmware dependency.
Is W25R64JVSSIQ pin-compatible with earlier Winbond W25Q64JV devices?
No, W25R64JVSSIQ is not pin-compatible with W25Q64JV despite identical 8-pin SOIC-208-mil packaging. While pin assignments match (/CS, IO0–IO3, CLK, VCC, GND), W25R64JVSSIQ lacks the /WP pin present on W25Q64JV and instead implements write protection entirely through status register bits and individual block locks - requiring PCB layout revision for migration.
W25R64JVSSIQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 64Mbit
- Memory Organization:
- 8M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25R64JVSSIQ FAQ
1.How can I place an order for W25R64JVSSIQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25R64JVSSIQ 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 W25R64JVSSIQ reliable?
The price and inventory of W25R64JVSSIQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25R64JVSSIQ is usually 5 days.
3.What payment methods are accepted for W25R64JVSSIQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25R64JVSSIQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25R64JVSSIQ?
W25R64JVSSIQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25R64JVSSIQ 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 W25R64JVSSIQ?
For technical support, including W25R64JVSSIQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25R64JVSSIQ requirements.
6.How does Aetrix verify that W25R64JVSSIQ is sourced from the original manufacturer or authorized distributors?
All W25R64JVSSIQ 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 W25R64JVSSIQ meets industry standards.
7.What is the process for return or replacement of W25R64JVSSIQ?
All W25R64JVSSIQ units undergo pre-shipment inspection (PSI). If there is an issue with W25R64JVSSIQ, 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 W25R64JVSSIQ part is unused and in its original packaging.
Return procedure for W25R64JVSSIQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25R64JVSSIQ Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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