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Microchip Technology SST38VF6402-90-5I-B3KE
- Part No.:
- SST38VF6402-90-5I-B3KE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6402-90-5I-B3KE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,210
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Product details
Overview
SST38VF6402-90-5I-B3KE from Microchip Technology is a 64 Mbit (4M × 16) CMOS Advanced Multi-Purpose Flash Plus memory IC designed for nonvolatile program, configuration, and data storage in embedded systems. It operates from a single 2.7–3.6 V supply, delivers 90 ns read access time, supports 100,000 program/erase cycles, and retains data for >100 years. It is used in industrial controllers requiring field-upgradable firmware with hardware boot block protection.
For engineers reviewing the SST38VF6402-90-5I-B3KE datasheet, SST38VF6402-90-5I-B3KE pinout, SST38VF6402-90-5I-B3KE application, or SST38VF6402-90-5I-B3KE equivalent, this page provides verified technical context, JEDEC-compliant x16 interface timing, boot-block protection mapping, and real-world design implications of its 4-word Page Read buffer and Write-Buffer Programming capability.
Technical Context
The SST38VF6402-90-5I-B3KE implements SuperFlash split-gate cell technology with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its architecture supports JEDEC-standard x16 parallel interface, CFI compliance, and hardware/software protection including WP#-controlled boot block lock and volatile/non-volatile block protection (VPB/NVPB).
It features dual write detection methods-Data# Polling (DQ7) and Toggle Bits (DQ6/DQ2)-plus RY/BY# output for real-time status monitoring. The device supports Erase-Suspend/-Resume for concurrent read/program during background erase, and uses internal VPP generation to eliminate external high-voltage supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16), providing 8 MB addressable storage space for firmware or configuration data. |
| Read Access Time | 90 ns (max), defining minimum bus cycle time for standard random read operations. |
| Page Read Time | 25 ns per word (4-word page), enabling burst reads at up to 40 MHz effective throughput. |
| Endurance | 100,000 program/erase cycles minimum, supporting frequent field updates without premature wear-out. |
| Data Retention | >100 years at +25°C, ensuring long-term reliability in unpowered storage applications. |
| Supply Voltage | 2.7–3.6 V single supply, compatible with modern low-voltage microcontroller I/O domains. |
| Write Buffer Size | 16-word buffer, reducing average programming time to 1.75 µs/word when loading contiguous data. |
Pinout & Package
Package: 48-ball TFBGA (10 mm × 11.5 mm, 0.8 mm pitch) and 48-lead TSOP (12 mm × 20 mm). The SST38VF6402-90-5I-B3KE variant is specified with B3KE suffix indicating 48-ball TFBGA packaging per Microchip's ordering nomenclature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus selecting 4M × 16 locations; A21–A15 selects block, A21–A12 selects sector. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; outputs latched during read, inputs latched during write; tri-state when CE# or OE# high. |
| CE# | Chip Enable | Active-low chip select; device enters standby mode (3 µA) when high. |
| OE# | Output Enable | Active-low output gate; controls data bus drive without deselecting chip. |
| WE# | Write Enable | Controls latching of address/data and initiates command sequences (e.g., Program, Erase). |
| WP# | Write Protect | Hardware boot block lock: grounded to protect top/bottom boot sectors (B127 for SST38VF6402) from accidental erase/program. |
| RST# | Reset | Active-low hardware reset; returns device to Read mode and aborts ongoing operations. |
| RY/BY# | Ready/Busy | Open-drain status output: low during internal Program/Erase, high when ready for next command. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Protection | B127 (top 32 KWord block) is hardware-protected via WP# pin, preventing corruption of critical startup code. |
| Write-Buffer Programming | 16-word buffer enables 1.75 µs/word effective programming vs. 7 µs/word for single-word writes, accelerating firmware updates. |
| Erase-Suspend/-Resume | Allows reading or programming other blocks while erasing one sector/block, enabling real-time system responsiveness. |
| Auto Low Power Mode | Automatically transitions from 4 mA active read to 3 µA standby after valid read access, reducing dynamic power in burst-read scenarios. |
| 128-bit Unique ID | Factory-programmed serial number enabling secure device authentication and firmware binding in production systems. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments with ambient temperatures up to +85°C. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped to microcontroller address space; accessed via x16 parallel bus with 90 ns timing constraints. Use Value: Hardware boot block protection prevents accidental overwrite of bootloader during remote firmware upgrades, ensuring system recoverability. | Use Scenario: Holding calibrated sensor parameters and regulatory-compliant device settings in portable diagnostic equipment requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Secure configuration memory with 128-bit Unique ID and password-protected software locking for audit trail integrity. Use Value: >100-year data retention and 100,000-cycle endurance support multi-year device service life without configuration drift or refresh maintenance. |
| Telecom Base Station Boot ROM | Automotive Infotainment System Code Storage |
Use Scenario: Hosting boot firmware and FPGA configuration bitstreams in outdoor telecom infrastructure exposed to wide temperature swings and vibration. IC Role / Device Role / Timing Role: JEDEC-compliant x16 Flash memory interfaced to ARM-based baseband processor; relies on RY/BY# for precise operation synchronization. Use Value: Erase-Suspend capability allows background flash reprogramming while maintaining real-time radio control tasks, minimizing service interruption. | Use Scenario: Storing navigation map data and UI assets in automotive head units where ESD robustness and AEC-Q100 stress tolerance are required. IC Role / Device Role / Timing Role: High-reliability code storage with uniform 32 KWord block erase and 25 ns Page Read for fast GUI asset loading. Use Value: SuperFlash technology delivers lower total energy per erase/program than competing NOR flash, reducing thermal load in sealed infotainment enclosures. |
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 |
|---|---|---|---|
| SST39VF6402-90-5I-B3KE | Same density and package, but uses standard Multi-Purpose Flash (MPF) architecture-not Advanced MPF+-lacking Erase-Suspend and Write-Buffer Programming. | No background erase capability; unsuitable for real-time systems requiring concurrent read/write during update. | Select only if legacy compatibility or cost sensitivity outweighs need for suspend/resume and accelerated programming. |
| MX29LV640ETTI-90G | 64 Mbit x16, 90 ns, but requires 3.0–3.6 V supply only; lacks Auto Low Power mode and 128-bit UID. | Higher minimum VDD limits use in 2.7 V–3.6 V flexible supply designs; no unique identifier for secure provisioning. | Prefer when operating strictly within 3.0–3.6 V range and security features are not required. |
Compared with SST39VF6402-90-5I-B3KE and MX29LV640ETTI-90G, the SST38VF6402-90-5I-B3KE uniquely combines Erase-Suspend, Write-Buffer Programming, and 2.7 V operation-enabling faster, safer, and more power-efficient firmware updates in resource-constrained embedded systems.
Availability
SST38VF6402-90-5I-B3KE is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, telecom base stations, and automotive infotainment systems requiring stable component supply across extended product lifecycles.
Supply support for SST38VF6402-90-5I-B3KE 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
Microchip Technology is a leading provider of microcontrollers, analog components, and memory solutions, with a focus on embedded control and connectivity.
The SST38VF6402-90-5I-B3KE belongs to Microchip's Advanced Multi-Purpose Flash Plus (Advanced MPF+) product line, engineered specifically for high-reliability, low-power, field-upgradable firmware and configuration storage in industrial and automotive applications.
FAQ
What is the boot block configuration of the SST38VF6402-90-5I-B3KE?
The SST38VF6402-90-5I-B3KE features a top-boot configuration: Block B127 (32 KWord, addresses A21–A15 = 1111111) serves as the protected boot block. When WP# is grounded, this block is locked against program and erase operations. This layout ensures bootloader integrity during system-level firmware updates, and is confirmed in Table 2 of DS20005015D for SST38VF6402 devices.
Does the SST38VF6402-90-5I-B3KE support Page Read, and what is its performance benefit?
Yes, the SST38VF6402-90-5I-B3KE supports Page Read with a 4-word buffer and 25 ns access time per word. This enables sequential reads at an effective rate of ~40 MHz, significantly faster than the 90 ns standard read for random access. The feature reduces CPU wait states during burst data fetches-such as loading UI assets or sensor calibration tables-and is implemented using asynchronous address toggling on A1/A0 while holding A21–A2 constant.
How does the Write-Buffer Programming feature work in the SST38VF6402-90-5I-B3KE?
The SST38VF6402-90-5I-B3KE implements a 16-word Write Buffer that accepts up to 16 words in a single Write-to-Buffer command sequence, then programs them collectively to flash with the Program Buffer-to-Flash command. This reduces average programming time to 1.75 µs/word versus 7 µs/word for single-word writes. The buffer requires identical A21–A4 addresses across all loaded words and is validated by DQ1 status feedback for abort detection.
What protection mechanisms does the SST38VF6402-90-5I-B3KE provide against accidental writes?
The SST38VF6402-90-5I-B3KE offers three-tiered protection: (1) hardware WP# pin locking the boot block (B127), (2) software-controlled individual 32 KWord block protection using VPB/NVPB flags, and (3) password-protected sector/block locking. All mechanisms are enforced during command execution-any attempt to program or erase a protected region results in immediate abort, with status detectable via DQ7/DQ6 or RY/BY#.
Is the SST38VF6402-90-5I-B3KE RoHS compliant and qualified for industrial temperature operation?
Yes, the SST38VF6402-90-5I-B3KE is RoHS compliant per Microchip documentation and rated for industrial temperature range (–40°C to +85°C), as indicated by the "I" in its part number suffix. It meets JEDEC standards for x16 flash pinouts and command sets, and is manufactured using SuperFlash technology optimized for reliability under thermal cycling and long-term data retention stress.
SST38VF6402-90-5I-B3KE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFBGA
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 64Mbit
- Memory Organization:
- 4M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10µs
- Access Time:
- 90 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFBGA
SST38VF6402-90-5I-B3KE FAQ
1.How can I place an order for SST38VF6402-90-5I-B3KE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6402-90-5I-B3KE 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 SST38VF6402-90-5I-B3KE reliable?
The price and inventory of SST38VF6402-90-5I-B3KE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6402-90-5I-B3KE is usually 5 days.
3.What payment methods are accepted for SST38VF6402-90-5I-B3KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6402-90-5I-B3KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6402-90-5I-B3KE?
SST38VF6402-90-5I-B3KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6402-90-5I-B3KE 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 SST38VF6402-90-5I-B3KE?
For technical support, including SST38VF6402-90-5I-B3KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6402-90-5I-B3KE requirements.
6.How does Aetrix verify that SST38VF6402-90-5I-B3KE is sourced from the original manufacturer or authorized distributors?
All SST38VF6402-90-5I-B3KE 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 SST38VF6402-90-5I-B3KE meets industry standards.
7.What is the process for return or replacement of SST38VF6402-90-5I-B3KE?
All SST38VF6402-90-5I-B3KE units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6402-90-5I-B3KE, 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 SST38VF6402-90-5I-B3KE part is unused and in its original packaging.
Return procedure for SST38VF6402-90-5I-B3KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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