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Microchip Technology SST39VF6401B-70-4I-B1KE
- Part No.:
- SST39VF6401B-70-4I-B1KE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST39VF6401B-70-4I-B1KE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,041
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Product details
Overview
SST39VF6401B-70-4I-B1KE from Microchip is a 64 Mbit (4M × 16) CMOS Multi-Purpose Flash Plus (MPF+) memory IC with bottom-block hardware write protection, 70 ns read access time, and single 2.7–3.6 V supply operation. It supports sector/block/chip erase, erase-suspend/resume, and Security ID programming, and is used in embedded firmware storage for industrial controllers and legacy communication modules.
For engineers reviewing the SST39VF6401B-70-4I-B1KE datasheet, SST39VF6401B-70-4I-B1KE pinout, SST39VF6401B-70-4I-B1KE application, or SST39VF6401B-70-4I-B1KE equivalent, key selection considerations include bottom-boot block protection (000000H–007FFFH), TSOP-48/TFFBGA-48 packaging, JEDEC x16 pin compatibility, SuperFlash endurance (100,000 cycles), and Auto Low Power mode (3 µA standby).
Technical Context
The SST39VF6401B-70-4I-B1KE implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. It uses standard JEDEC x16 asynchronous interface timing and supports command-set compatibility with industry-standard flash devices.
Its hardware block protection targets the bottom 32 KWord (000000H–007FFFH), activated when WP# is grounded. Erase-suspend/resume allows real-time read access during active erase operations, while Security ID provides factory-locked (128-bit) and user-programmable (128-bit) identification space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4M × 16 (64 Mbit); enables 16-bit parallel data bus interfacing with microcontrollers and DSPs |
| Read Access Time | 70 ns; ensures compatibility with 14 MHz system clocks without wait states |
| Supply Voltage | 2.7–3.6 V; supports single-supply operation in battery-backed and low-voltage industrial systems |
| Endurance | 100,000 program/erase cycles; guarantees long-term field reliability in firmware update applications |
| Data Retention | >100 years; eliminates need for periodic refresh in unpowered storage scenarios |
| Block Protection | Bottom 32 KWord (000000H–007FFFH); prevents accidental overwrite of boot code during field updates |
| Standby Current | 3 µA (typical); reduces power budget in always-on embedded nodes |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm) and 48-ball TFBGA (8 mm × 10 mm). The SST39VF6401B-70-4I-B1KE variant is specified with TSOP-48 packaging per Microchip DS20005008C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus (A21 most significant); A10–A0 used for command decoding per JEDEC |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional latched data bus; tri-stated when CE# or OE# high |
| CE# | Chip Enable | Active-low chip select; device enters standby when high |
| OE# | Output Enable | Active-low output gate; controls data bus visibility during read cycles |
| WE# | Write Enable | Active-low control for program/erase command latching and internal timing initiation |
| WP# | Write Protect | Grounding protects bottom 32 KWord boot block; floating = internally pulled high = unprotected |
| RST# | Hardware Reset | Forces immediate return to read mode; required after power-up or error recovery |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; dual ground pins reduce noise coupling in high-speed reads |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Enables real-time read access from non-suspended sectors during active erase - critical for interrupt-driven firmware updates |
| Auto Low Power Mode | Reduces active read current from 9 mA to 3 µA after valid read access - cuts dynamic power by >99% in burst-read scenarios |
| Security ID Space | 256-bit total (128-bit factory-locked + 128-bit user-programmable) - supports secure device authentication and traceability |
| Uniform Sector/Block Architecture | 2 KWord sectors (2048 total) and 32 KWord blocks (128 total) - simplifies wear leveling and partition management in host firmware |
| Toggle Bit & Data# Polling | Dual status detection (DQ6/DQ7) enables robust, clock-independent end-of-write verification without external timers |
Applications
| Industrial PLC Firmware Storage | Legacy Telecom Baseband Module |
|---|---|
|
Use Scenario: Storing boot loader and field-upgradable application firmware in programmable logic controllers operating at -40°C to +85°C. IC Role / Device Role / Timing Role: Nonvolatile program memory with hardware boot-block protection and 70 ns read latency for deterministic startup. Use Value: Bottom-block protection prevents corruption of critical boot code during remote firmware updates over Modbus or CAN. |
Use Scenario: Holding DSP configuration tables and protocol stack binaries in E1/T1 line cards requiring long-life data retention. IC Role / Device Role / Timing Role: x16 asynchronous flash memory interfaced to TI C6000-series DSPs via EMIF with no glue logic. Use Value: 100-year data retention and 100,000-cycle endurance ensure 15+ year field deployment without refresh. |
| Medical Diagnostic Imaging Controller | Automotive Body Control Module (Legacy) |
|
Use Scenario: Storing calibration coefficients and safety-critical boot images in ultrasound front-end controllers with strict qualification requirements. IC Role / Device Role / Timing Role: JEDEC-compliant flash memory supporting CFI query for automatic driver initialization and geometry detection. Use Value: CFI interface enables plug-and-play compatibility across multiple flash vendors in certified medical BOMs. |
Use Scenario: Firmware storage in pre-2010 BCMs using 8051-based MCUs, where cost-sensitive TSOP-48 footprint is mandatory. IC Role / Device Role / Timing Role: Directly mapped x16 memory device with 2.7–3.6 V operation matching MCU I/O voltage range. Use Value: Single-voltage operation eliminates level-shifting components, reducing BOM cost and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6402B-70-4I-B1KE | Top 32 KWord hardware block protection (3F8000H–3FFFFFH) instead of bottom; otherwise identical pinout, timing, and command set | Used where boot code resides in top memory region - requires PCB-level WP# routing change | Select only if top-boot architecture matches system memory map; not drop-in compatible due to inverted protection region |
| SST38VF6401-70-4I-B1KE | Newer generation with same density and 70 ns speed, but enhanced reliability (200K cycles), lower VDD min (2.3 V), and extended temperature range (-40°C to +105°C) | Recommended for new designs per Microchip; supports wider voltage margin and higher thermal stress environments | Preferred for production ramp; SST39VF6401B-70-4I-B1KE remains viable for legacy replacement and obsolescence mitigation |
Compared with SST39VF6402B-70-4I-B1KE, the SST39VF6401B-70-4I-B1KE provides bottom-boot protection essential for legacy x86-compatible BIOS layouts; versus SST38VF6401-70-4I-B1KE, it lacks 2.3 V operation and 200K-cycle endurance but maintains full software and pin compatibility for drop-in replacement in existing designs.
Availability
SST39VF6401B-70-4I-B1KE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy telecom baseband modules, and automotive body control module replacements requiring stable component supply and long-lifecycle support.
Supply support for SST39VF6401B-70-4I-B1KE 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 manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The SST39VF6401B-70-4I-B1KE belongs to Microchip's Multi-Purpose Flash Plus (MPF+) product line, designed specifically for reliable, low-power, single-supply firmware and configuration storage in resource-constrained embedded systems.
FAQ
What is the boot block protection scheme implemented in the SST39VF6401B-70-4I-B1KE?
The SST39VF6401B-70-4I-B1KE implements bottom hardware block protection covering the lowest 32 KWord (000000H–007FFFH), activated when the WP# pin is grounded. This prevents accidental program/erase of boot code during field updates. If WP# is left floating, an internal pull-up disables protection. The SST39VF6401B-70-4I-B1KE differs from SST39VF6402B in using bottom rather than top protection.
Does the SST39VF6401B-70-4I-B1KE support both TSOP and TFBGA packages?
Yes - the SST39VF6401B-70-4I-B1KE is qualified in both 48-lead TSOP (12 mm × 20 mm) and 48-ball TFBGA (8 mm × 10 mm) packages per DS20005008C. The "-B1KE" suffix denotes the TSOP-48 variant; TFBGA variants use different ordering codes (e.g., "-B1KE" vs. "-B1KE-TFBGA"). Pin functions and timing are identical across packages.
How does the Auto Low Power mode function in the SST39VF6401B-70-4I-B1KE?
The SST39VF6401B-70-4I-B1KE enters Auto Low Power mode automatically after a valid read cycle completes, reducing active current from 9 mA to 3 µA. It exits instantly on any address or control signal transition - with zero access time penalty. This feature is disabled during power-up if CE# remains low; the first address change triggers entry.
Can the SST39VF6401B-70-4I-B1KE be used as a direct replacement for SST39VF6402B-70-4I-B1KE?
No - while pinout, timing, and command set are identical, the SST39VF6401B-70-4I-B1KE protects the bottom 32 KWord boot block, whereas SST39VF6402B-70-4I-B1KE protects the top 32 KWord. Swapping them without adjusting WP# routing and memory map risks corrupting protected regions. They are functional alternatives but not drop-in replacements.
What is the purpose of the Security ID feature in the SST39VF6401B-70-4I-B1KE?
The SST39VF6401B-70-4I-B1KE includes a 256-bit Security ID: 128 bits factory-programmed and locked by Microchip, plus 128 bits user-programmable. It supports device authentication, traceability, and anti-cloning. The user segment is programmed via dedicated commands and can be permanently locked to prevent overwrite - neither segment is erasable.
SST39VF6401B-70-4I-B1KE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-TFBGA
- Packaging:
- Tray
- 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
SST39VF6401B-70-4I-B1KE FAQ
1.How can I place an order for SST39VF6401B-70-4I-B1KE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF6401B-70-4I-B1KE 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 SST39VF6401B-70-4I-B1KE reliable?
The price and inventory of SST39VF6401B-70-4I-B1KE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF6401B-70-4I-B1KE is usually 5 days.
3.What payment methods are accepted for SST39VF6401B-70-4I-B1KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6401B-70-4I-B1KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF6401B-70-4I-B1KE?
SST39VF6401B-70-4I-B1KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF6401B-70-4I-B1KE 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 SST39VF6401B-70-4I-B1KE?
For technical support, including SST39VF6401B-70-4I-B1KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF6401B-70-4I-B1KE requirements.
6.How does Aetrix verify that SST39VF6401B-70-4I-B1KE is sourced from the original manufacturer or authorized distributors?
All SST39VF6401B-70-4I-B1KE 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 SST39VF6401B-70-4I-B1KE meets industry standards.
7.What is the process for return or replacement of SST39VF6401B-70-4I-B1KE?
All SST39VF6401B-70-4I-B1KE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6401B-70-4I-B1KE, 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 SST39VF6401B-70-4I-B1KE part is unused and in its original packaging.
Return procedure for SST39VF6401B-70-4I-B1KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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