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Microchip Technology SST39VF6401B-70-4C-B1KE
- Part No.:
- SST39VF6401B-70-4C-B1KE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST39VF6401B-70-4C-B1KE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,604
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Product details
Overview
SST39VF6401B-70-4C-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, single 2.7–3.6 V supply operation, and JEDEC-standard x16 asynchronous interface - used for firmware storage and configuration in industrial embedded controllers and legacy boot systems.
For engineers reviewing the SST39VF6401B-70-4C-B1KE datasheet, SST39VF6401B-70-4C-B1KE pinout, SST39VF6401B-70-4C-B1KE application, or SST39VF6401B-70-4C-B1KE equivalent, key selection considerations include bottom-boot block protection (000000H–007FFFH), 100,000-cycle endurance, sector/block/erase-suspend capability, TSOP-48 or TFBGA-48 packaging, and compatibility with standard flash command sets including CFI and Security ID.
Technical Context
The SST39VF6401B-70-4C-B1KE implements SuperFlash technology with split-gate cells and thick-oxide tunneling injection, enabling fixed erase/program times independent of cycle count. It supports uniform 2 KWord sectors (2048 total) and 32 KWord blocks (128 total), with hardware WP#-controlled bottom-block protection and RST#-driven hardware reset.
Operation relies on JEDEC-compliant command sequences: three-byte load for word-program, six-byte sequences for sector/block/chip-erase (50H/30H/10H), and dedicated commands for Erase-Suspend (B0H), Security ID access (88H), and CFI Query (98H). Status detection uses DQ7 Data# Polling and DQ6/DQ2 Toggle Bits, with Auto Low Power mode reducing active read current to 3 µA after valid access.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization); supports 22-bit addressing (A0–A21) with 11-bit internal address bus (A0–A10). |
| Read Access Time | 70 ns max; enables direct execution (XIP) from flash in microcontroller boot loaders without wait states at moderate clock speeds. |
| Supply Voltage | 2.7–3.6 V single supply; eliminates need for separate VPP programming voltage - internal charge pump handles high-voltage generation. |
| Endurance & Retention | 100,000 program/erase cycles typical; >100 years data retention - validated for long-life industrial firmware storage. |
| Erase/Program Speed | Sector-erase: 18 ms typ; block-erase: 18 ms typ; chip-erase: 40 ms typ; word-program: 7 µs typ - deterministic timing simplifies real-time system scheduling. |
| Protection Scheme | Hardware bottom-block protection (000000H–007FFFH); software data protection (SDP) enabled by default; Security ID (128-bit factory + 128-bit user). |
| Interface Standard | JEDEC-standard x16 asynchronous parallel interface; compatible with common flash controllers and boot ROM interfaces. |
Pinout & Package
Package: 48-ball TFBGA (8 mm × 10 mm, 0.8 mm pitch) per Figure 3; also available in 48-lead TSOP (12 mm × 20 mm). Pinout conforms to JEDEC standard for x16 flash memories.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | A0–A10 used for byte/word addressing; A11–A21 select sector (AMS–A11) or block (AMS–A15); AMS = A21. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; latched internally during write; tri-stated when CE# or OE# high. |
| CE# | Chip Enable | Active-low device selection; must be low for all write/erase operations and valid reads. |
| OE# | Output Enable | Active-low output gating; controls data bus drive; high disables outputs (high-Z state). |
| WE# | Write Enable | Active-low control for write cycles; latches address/data on falling/rising edges per JEDEC timing. |
| WP# | Write Protect | Active-low hardware lock for bottom 32 KWord boot block (000000H–007FFFH); floating = unprotected via internal pull-up. |
| RST# | Reset | Active-low hardware reset; terminates ongoing operations and forces return to read mode within TRP. |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; dual ground pins (VSS) for noise reduction in high-speed parallel bus operation. |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Erase-Resume | Allows reading or programming non-suspended sectors during active erase - critical for real-time firmware updates without halting system operation. |
| Auto Low Power Mode | Reduces active read current from 9 mA to 3 µA after valid access - cuts standby power in always-on embedded systems without software intervention. |
| Security ID Space | 256-bit space (128-bit factory-locked + 128-bit user-programmable) accessible via 88H command - enables secure device authentication and firmware binding. |
| CFI Compliance | Full Common Flash Interface support (Query string "QRY", geometry tables, timeout parameters) - enables plug-and-play integration with generic flash drivers. |
| Uniform Block Architecture | 128 × 32 KWord blocks + 2048 × 2 KWord sectors - simplifies memory management and wear-leveling in host firmware. |
Applications
| Industrial PLC Firmware Storage | Legacy Boot ROM Replacement |
|---|---|
Use Scenario: Storing ladder logic, I/O mapping, and calibration data in programmable logic controllers operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Nonvolatile boot and runtime firmware storage with hardware bottom-block protection preventing accidental overwrite of startup code. Use Value: 100,000-cycle endurance and >100-year data retention ensure field reliability over 15+ year product lifecycles without refresh. |
Use Scenario: Replacing obsolete EPROMs in legacy medical imaging subsystems requiring pin-compatible, single-supply flash upgrade. IC Role / Device Role / Timing Role: x16 parallel boot memory mapped at 0x000000; 70 ns access enables zero-wait-state execution from reset vector. Use Value: JEDEC pinout and command compatibility allows drop-in replacement without PCB or firmware changes. |
| Telecom Line Card Configuration | Automotive Body Control Module |
Use Scenario: Holding DSP firmware, port profiles, and fault logs in carrier-grade DSLAM line cards exposed to thermal cycling. IC Role / Device Role / Timing Role: Configuration memory with Erase-Suspend capability - permits live diagnostics while background erase reclaims worn sectors. Use Value: Deterministic 18 ms sector-erase time enables predictable maintenance windows without service interruption. |
Use Scenario: Storing vehicle-specific calibration maps, CAN node IDs, and diagnostic trouble codes in body control units. IC Role / Device Role / Timing Role: Secure firmware and parameter storage leveraging 128-bit user Security ID to bind calibration data to ECU hardware. Use Value: Bottom-block protection isolates bootloader from field updates, meeting ISO 26262 ASIL-B functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST38VF6401 | Successor device; same density and voltage range but enhanced reliability (200K cycles), lower 55 ns access, and extended -40°C to +105°C temp grade. | Recommended for new designs; supports higher-speed boot and wider industrial temperature range. | Select SST38VF6401 for new projects requiring longer lifecycle, faster access, or extended temperature operation. |
| MX29LV640ETTI-70G | 64 Mbit x16 parallel flash from Macronix; 70 ns access, 3.0–3.6 V supply, bottom-boot block, but no Security ID or Erase-Suspend. | Lacks suspend/resume and secure ID features; suitable where basic firmware storage suffices without advanced management. | Choose MX29LV640ETTI-70G only if cost sensitivity outweighs need for suspend capability and hardware security. |
Compared with SST39VF6401B-70-4C-B1KE, SST38VF6401 offers higher endurance and speed for future-proofing, while MX29LV640ETTI-70G provides basic functionality at lower cost but omits critical features like Erase-Suspend and Security ID - making it unsuitable for secure or real-time update scenarios.
Availability
SST39VF6401B-70-4C-B1KE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy boot ROM replacement, telecom line card configuration, and automotive body control module applications requiring stable component supply and long-term obsolescence management.
Supply support for SST39VF6401B-70-4C-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 memory solutions, with emphasis on industrial, automotive, and aerospace reliability standards.
The SST39VF6401B-70-4C-B1KE belongs to Microchip's Multi-Purpose Flash Plus (MPF+) family, designed specifically for reliable, low-voltage firmware and configuration storage in resource-constrained embedded systems requiring long data retention and deterministic erase timing.
FAQ
What does the "B1KE" suffix indicate in SST39VF6401B-70-4C-B1KE?
The "B1KE" suffix denotes the package and marking variant: "B1" specifies the 48-ball TFBGA package (8 mm × 10 mm), "K" indicates lead-free (RoHS-compliant) finish, and "E" designates tape-and-reel packaging. This matches the official Microchip ordering code structure for SST39VF6401B-70-4C-B1KE as documented in DS20005008C.
Does SST39VF6401B-70-4C-B1KE support both TSOP and TFBGA packages?
Yes - SST39VF6401B-70-4C-B1KE is the TFBGA variant; the TSOP-48 version is designated SST39VF6401B-70-4C-EKE. Both share identical electrical specifications, command set, and bottom-block protection, differing only in mechanical form factor and thermal characteristics per their respective package drawings in DS20005008C Figures 2 and 3.
How is bottom-block protection implemented in SST39VF6401B-70-4C-B1KE?
SST39VF6401B-70-4C-B1KE implements hardware bottom-block protection for the lowest 32 KWord (000000H–007FFFH) via the WP# pin: when WP# is driven low, program and erase operations to that region are inhibited. If WP# floats, an internal pull-up disables protection - allowing full array access. This differs from SST39VF6402B, which protects the top block instead.
Can SST39VF6401B-70-4C-B1KE be used in place of SST39VF6402B?
No - SST39VF6401B-70-4C-B1KE and SST39VF6402B are not interchangeable due to opposite hardware block protection schemes: SST39VF6401B protects the bottom 32 KWord block (000000H–007FFFH), while SST39VF6402B protects the top block (3F8000H–3FFFFFH). Swapping them risks unintended erasure of protected boot code unless WP# behavior and address mapping are revalidated.
What status detection methods does SST39VF6401B-70-4C-B1KE support during write operations?
SST39VF6401B-70-4C-B1KE supports two real-time status detection methods: Data# Polling (DQ7 toggles until completion, then returns true data) and Toggle Bits (DQ6 toggles during internal program/erase, stops when complete). DQ2 provides additional context for erase-suspended sectors. These are initiated automatically after the rising edge of WE# or CE# per the command sequence timing in DS20005008C Figures 7–8.
SST39VF6401B-70-4C-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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFBGA
SST39VF6401B-70-4C-B1KE FAQ
1.How can I place an order for SST39VF6401B-70-4C-B1KE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF6401B-70-4C-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-70-4C-B1KE reliable?
The price and inventory of SST39VF6401B-70-4C-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-70-4C-B1KE is usually 5 days.
3.What payment methods are accepted for SST39VF6401B-70-4C-B1KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6401B-70-4C-B1KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF6401B-70-4C-B1KE?
SST39VF6401B-70-4C-B1KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF6401B-70-4C-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-70-4C-B1KE?
For technical support, including SST39VF6401B-70-4C-B1KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF6401B-70-4C-B1KE requirements.
6.How does Aetrix verify that SST39VF6401B-70-4C-B1KE is sourced from the original manufacturer or authorized distributors?
All SST39VF6401B-70-4C-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-70-4C-B1KE meets industry standards.
7.What is the process for return or replacement of SST39VF6401B-70-4C-B1KE?
All SST39VF6401B-70-4C-B1KE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6401B-70-4C-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-70-4C-B1KE part is unused and in its original packaging.
Return procedure for SST39VF6401B-70-4C-B1KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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