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Microchip Technology SST39VF6402B-70-4I-B1KE-T
- Part No.:
- SST39VF6402B-70-4I-B1KE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST39VF6402B-70-4I-B1KE-T.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,755
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Product details
Overview
SST39VF6402B-70-4I-B1KE-T from Microchip is a 64 Mbit (4M × 16) CMOS Multi-Purpose Flash Plus (MPF+) memory IC with single-voltage operation (2.7–3.6 V), 70 ns read access time, top-block hardware write protection (32 KWord), and SuperFlash technology enabling 100,000 program/erase cycles and >100 years data retention. It serves as nonvolatile program/data storage in embedded controllers and firmware update modules.
For engineers reviewing the SST39VF6402B-70-4I-B1KE-T datasheet, SST39VF6402B-70-4I-B1KE-T pinout, SST39VF6402B-70-4I-B1KE-T application, or SST39VF6402B-70-4I-B1KE-T equivalent, key selection considerations include x16 asynchronous interface timing, JEDEC-compliant pinout, top-boot block protection mapping, sector/block/chip erase command sequences, and compatibility with legacy 2.7–3.6 V flash-based boot code architectures.
Technical Context
This device implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, delivering fixed erase/program times independent of cycle count-unlike conventional NOR flash. Its command set follows JEDEC-standard software protocols (e.g., six-byte Block-Erase with 30H at sixth bus cycle) and supports CFI Query mode for runtime device characterization.
Hardware protection includes dedicated WP# input for top 32 KWord block lock, RST# for hard reset to Read mode, and noise/glitch immunity on WE#/CE# (<5 ns pulses ignored). Erase-suspend/resume capability (B0H/30H commands) enables concurrent read/program during active erase operations without interrupting system execution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization); supports 22-bit addressing (A0–A21) with uniform 2 KWord sectors and 32 KWord blocks. |
| Read Access Time | 70 ns max; enables direct execution from flash (XIP) in microcontroller boot loaders operating at ≤14 MHz bus frequency. |
| Supply Voltage | 2.7–3.6 V single supply; eliminates need for external VPP generation-internal charge pump handles high-voltage programming. |
| Endurance & Retention | 100,000 program/erase cycles typical; >100 years data retention-validated for industrial temperature range (-40°C to +85°C). |
| Erase/Program Speed | Sector/Block-Erase: 18 ms typical; Chip-Erase: 40 ms typical; Word-Program: 7 µs typical-enables fast field firmware updates. |
| Protection Features | Top 32 KWord hardware block protection via WP#; Software Data Protection (SDP) with three/four/six-byte command sequences required for all writes. |
| Status Detection | DQ7 Data# Polling and DQ6/DQ2 Toggle Bits provide real-time write completion feedback without polling overhead or timeout assumptions. |
Pinout & Package
Package: 48-ball TFBGA (8 mm × 10 mm, 0.8 mm pitch) and 48-lead TSOP (12 mm × 20 mm); both RoHS compliant and JEDEC-standard x16 flash pinout compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus; AMS = A21 selects top/bottom boot block; A10–A0 used for sector/block address latching per JEDEC command sequence. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; tri-stated when CE# or OE# high; latched internally during write; supports DQ7 polling and DQ6/DQ2 toggle status monitoring. |
| WE#, CE#, OE# | Control Inputs | Standard x16 asynchronous interface controls: WE# initiates write cycles, CE# enables chip, OE# gates output drivers-timing compliant with JEDEC AC specs (CL = 30 pF, 5 ns edge rate). |
| WP# | Hardware Protect | Active-low top-block write protect; grounded to lock addresses 3F8000H–3FFFFFH (32 KWord); floating = internal pull-up = unprotected. |
| RST# | Hardware Reset | Active-low asynchronous reset; forces return to Read mode within TRP (min 100 ns); required before reinitiating interrupted erase/program for data integrity. |
| VDD, VSS | Power/Ground | Single 2.7–3.6 V supply; VSS pins provide low-inductance ground return paths critical for stable erase/program voltage regulation. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide tunneling injector delivers fixed 7 µs Word-Program and 18 ms Block-Erase times across full lifecycle-no de-rating needed in system firmware. |
| Erase-Suspend/Resume | Issuing B0H command pauses active Sector/Block-Erase, enabling immediate read from any non-suspended sector or program into unlocked sectors-critical for real-time OS firmware patching. |
| Security ID Space | 256-bit factory/user programmable ID (128-bit locked Microchip ID + 128-bit user-writable space); accessed via 88H command-supports secure boot authentication and device binding. |
| Auto Low Power Mode | Enters ~3 µA standby after valid Read cycle; exits instantly on address/control transition-reduces average active current to 2 mA/MHz without access penalty. |
| CFI Query Support | Standard Common Flash Interface (CFI) table accessible via 98H command at 555H-enables runtime detection of geometry, timing, and command set for portable flash driver development. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile x16 boot memory mapped to microcontroller address space; provides 70 ns read access for deterministic startup and 18 ms block erase for over-the-air firmware updates. Use Value: Top-block hardware protection prevents accidental corruption of critical bootloader code during field updates, while >100-year data retention ensures reliability over equipment lifetime. | Use Scenario: Holding certified boot firmware and calibration data in Class II medical instruments requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Secure nonvolatile memory with factory-programmed 128-bit Security ID and user-writable ID segment; supports cryptographic signature verification during power-on self-test. Use Value: CFI Query capability allows host MCU to auto-detect device geometry and timing parameters-simplifying qualification across production batches and reducing validation effort. |
| Automotive Infotainment Head Unit | Networking Equipment Configuration |
Use Scenario: Storing UI assets, voice recognition models, and vehicle-specific configuration in automotive infotainment systems operating across -40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability flash memory with industrial-grade temperature rating and 100,000-cycle endurance; interfaces directly to ARM Cortex-A application processor via x16 bus. Use Value: Auto Low Power Mode reduces active read current to 2 mA/MHz-cutting system-level power consumption during display refresh and audio streaming. | Use Scenario: Maintaining persistent configuration, MAC tables, and routing rules in enterprise switches and routers subject to frequent reboots and firmware upgrades. IC Role / Device Role / Timing Role: Dual-mode flash supporting both sector-erase (for parameter updates) and chip-erase (for factory reset); uses JEDEC-standard command set for interoperability with existing flash drivers. Use Value: Erase-suspend/resume functionality allows background configuration saves without interrupting packet forwarding-ensuring zero packet loss during maintenance windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6402B-70-4C-B1KE-T | Commercial temperature grade (0°C to +70°C) vs. industrial (-40°C to +85°C); identical electrical specs, pinout, and command set. | Not qualified for extended temperature environments; unsuitable for outdoor or under-hood automotive use. | Select only for cost-sensitive consumer electronics where ambient temperature remains within 0–70°C. |
| SST38VF6402-70-4I-B1KE-T | Newer generation with same density, voltage, and timing-but enhanced reliability (200K cycles), lower active current (7 mA), and improved ESD tolerance (4 kV HBM). | Drop-in replacement in most designs; requires validation of updated CFI table and minor timing adjustments in legacy drivers. | Preferred for new designs per Microchip's "Not Recommended for New Designs" notice; offers longer product lifecycle support. |
Compared with SST39VF6402B-70-4I-B1KE-T, the SST39VF6402B-70-4C-B1KE-T lacks industrial temperature qualification but matches all functional specs, while the SST38VF6402-70-4I-B1KE-T delivers higher endurance and lower power with backward-compatible pinout and command structure-making it the strategic upgrade path.
Availability
SST39VF6402B-70-4I-B1KE-T is available at Aetrix Electronics and suitable for industrial control systems, medical instrumentation, automotive infotainment head units, and networking equipment requiring stable component supply and long-term obsolescence management.
Supply support for SST39VF6402B-70-4I-B1KE-T 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with emphasis on reliability, longevity, and embedded system integration.
The SST39VF6402B belongs to Microchip's Multi-Purpose Flash Plus (MPF+) product line, designed specifically for cost-sensitive, high-reliability embedded applications requiring robust firmware storage, field-upgradable code, and hardware-enforced boot protection.
FAQ
What does the "B1KE-T" suffix indicate in SST39VF6402B-70-4I-B1KE-T?
The "B1KE-T" suffix denotes a 48-ball TFBGA package (B1), lead-free (K), halogen-free (E), and tape-and-reel packaging (T). The "4I" indicates industrial temperature grade (-40°C to +85°C), and "70" specifies 70 ns maximum read access time. This exact variant is validated for surface-mount assembly using standard 260°C reflow profiles per JEDEC J-STD-020.
How does SST39VF6402B-70-4I-B1KE-T implement top-block hardware protection?
SST39VF6402B-70-4I-B1KE-T implements top-block hardware protection via the WP# pin: when grounded, it locks the top 32 KWord block (addresses 3F8000H–3FFFFFH) against all Program and Erase operations. If WP# is left floating, an internal pull-up holds it high, disabling protection. This differs from SST39VF6401B, which protects the bottom 32 KWord block instead.
Can SST39VF6402B-70-4I-B1KE-T be used in place of SST39VF6401B?
No-SST39VF6402B-70-4I-B1KE-T and SST39VF6401B are not interchangeable due to opposite hardware block protection schemes: SST39VF6402B protects the top 32 KWord block, while SST39VF6401B protects the bottom. Swapping them risks corrupting protected bootloader regions unless firmware explicitly accounts for address-mapped protection boundaries.
What command sequence initiates Block-Erase in SST39VF6402B-70-4I-B1KE-T?
To initiate Block-Erase in SST39VF6402B-70-4I-B1KE-T, execute the six-byte JEDEC-standard command sequence: write AAH to 555H, 55H to 2AAH, 80H to 555H, AAH to 555H, 55H to 2AAH, then 30H to the block address (using AMS–A15 lines). The internal erase begins on the rising edge of the sixth WE# pulse, and completion is confirmed via DQ6 toggle cessation or DQ7 polling.
Is SST39VF6402B-70-4I-B1KE-T still recommended for new designs?
No-Microchip explicitly marks SST39VF6402B-70-4I-B1KE-T as "Not Recommended for New Designs" in its official datasheet (DS20005008C). The SST38VF6402 series is designated as the preferred replacement, offering higher endurance (200K cycles), lower power, and continued long-term support. Legacy designs may continue using SST39VF6402B-70-4I-B1KE-T under controlled obsolescence management.
SST39VF6402B-70-4I-B1KE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-TFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 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-TFBGA
SST39VF6402B-70-4I-B1KE-T FAQ
1.How can I place an order for SST39VF6402B-70-4I-B1KE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF6402B-70-4I-B1KE-T 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 SST39VF6402B-70-4I-B1KE-T reliable?
The price and inventory of SST39VF6402B-70-4I-B1KE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF6402B-70-4I-B1KE-T is usually 5 days.
3.What payment methods are accepted for SST39VF6402B-70-4I-B1KE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6402B-70-4I-B1KE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF6402B-70-4I-B1KE-T?
SST39VF6402B-70-4I-B1KE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF6402B-70-4I-B1KE-T 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 SST39VF6402B-70-4I-B1KE-T?
For technical support, including SST39VF6402B-70-4I-B1KE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF6402B-70-4I-B1KE-T requirements.
6.How does Aetrix verify that SST39VF6402B-70-4I-B1KE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF6402B-70-4I-B1KE-T 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 SST39VF6402B-70-4I-B1KE-T meets industry standards.
7.What is the process for return or replacement of SST39VF6402B-70-4I-B1KE-T?
All SST39VF6402B-70-4I-B1KE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6402B-70-4I-B1KE-T, 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 SST39VF6402B-70-4I-B1KE-T part is unused and in its original packaging.
Return procedure for SST39VF6402B-70-4I-B1KE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39VF6402B-70-4I-B1KE-T Tags
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