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Microchip Technology SST39VF6401B-70-4I-B1KE-T
- Part No.:
- SST39VF6401B-70-4I-B1KE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST39VF6401B-70-4I-B1KE-T.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,055
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Product details
Overview
SST39VF6401B-70-4I-B1KE-T from Microchip Technology is a 64 Mbit (4M × 16) CMOS Multi-Purpose Flash Plus (MPF+) 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 70 ns read access time, supports bottom-block hardware write protection (000000H–007FFFH), and features sector/block/chip erase with erase-suspend/resume capability.
For engineers reviewing the SST39VF6401B-70-4I-B1KE-T datasheet, SST39VF6401B-70-4I-B1KE-T pinout, SST39VF6401B-70-4I-B1KE-T application, or SST39VF6401B-70-4I-B1KE-T equivalent, key selection considerations include its x16 asynchronous interface, JEDEC-standard pinout, SuperFlash® technology reliability (100,000 program/erase cycles, >100-year data retention), and compatibility with legacy parallel NOR flash designs requiring boot-block protection.
Technical Context
The SST39VF6401B-70-4I-B1KE-T implements a split-gate SuperFlash® cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its command set is JEDEC-compatible and software-data-protected via three-byte (program) or six-byte (erase) sequences.
It supports uniform 2 KWord sectors (2048 total) and 32 KWord blocks (128 total), with dedicated WP# pin enabling hardware protection of the bottom 32 KWord boot block. The device includes RST# for hardware reset to read mode, CFI query support, and dual 128-bit Security ID (factory + user).
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 | 70 ns - enables direct execution (XIP) from flash in systems with ≤14 MHz bus timing budgets |
| Supply Voltage | 2.7–3.6 V - compatible with 3.3 V logic domains and eliminates need for separate VPP programming voltage |
| Endurance | 100,000 program/erase cycles - supports field firmware updates over product lifetime without wear leveling |
| Data Retention | >100 years - ensures long-term integrity of stored boot code or calibration data in industrial environments |
| Erase Granularity | 2 KWord sectors / 32 KWord blocks - allows fine-grained updates without full chip erase, reducing downtime |
| Protection Scheme | Hardware bottom-block protection (000000H–007FFFH) + software data protection - prevents accidental corruption of boot loader region |
Pinout & Package
Package: 48-ball TFBGA (8 mm × 10 mm, 0.8 mm pitch), RoHS-compliant, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus (A21 = AMS); A10–A0 used for command addressing; AMS–A11 selects sector, AMS–A15 selects block |
| DQ0–DQ15 | Data I/O | x16 bidirectional data bus; latched internally during writes; tri-state when CE# or OE# high |
| CE# | Chip Enable | Active-low chip select; must be low to enable read/write operations; controls device activation |
| OE# | Output Enable | Active-low output gate; enables data output only when CE# and OE# both low |
| 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 |
| RST# | Reset | Active-low hardware reset; forces return to read mode and aborts in-progress erase/program |
| VDD | Power Supply | +2.7–3.6 V supply; powers all internal logic and SuperFlash® array; no external VPP required |
| VSS | Ground | Reference ground for all signals and core operation |
| NC | No Connect | Unbonded pins (e.g., ball E1 in TFBGA); must be left unconnected per design |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows temporary halt of sector/block erase to read or program other regions - critical for real-time firmware updates |
| Auto Low Power Mode | Reduces active read current from 9 mA to 3 µA after valid access - cuts standby power in always-on embedded controllers |
| Security ID | 256-bit space (128-bit factory + 128-bit user) - enables secure device authentication and anti-cloning in OEM applications |
| Toggle Bit & Data# Polling | Dual status detection (DQ6/DQ7) - provides deterministic, software-driven end-of-write confirmation without timer overhead |
| CFI Query Support | Standardized JEDEC CFI table at address range 0010H–003FH - enables automatic driver initialization and cross-vendor compatibility |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile x16 parallel NOR flash serving as primary boot and application code storage, interfaced directly to microcontroller address/data bus. Use Value: Bottom-block hardware protection prevents accidental overwrite of boot loader during field firmware upgrades, ensuring system recoverability. |
Use Scenario: Holding certified boot code and safety-critical configuration parameters in portable diagnostic equipment requiring regulatory compliance and long-term data integrity. IC Role / Device Role / Timing Role: Trusted firmware storage element with >100-year data retention and CFI-identifiable interface for validated bootloader initialization. Use Value: Factory-programmed 128-bit Security ID enables cryptographic binding between hardware and firmware, meeting IEC 62304 traceability requirements. |
| Telecom Base Station Configuration | Automotive Infotainment System |
|
Use Scenario: Storing radio protocol stacks and site-specific calibration tables in outdoor telecom base stations exposed to extended thermal cycling. IC Role / Device Role / Timing Role: High-reliability MPF+ flash supporting sector-erase for incremental parameter updates without full reflash downtime. Use Value: Fixed 18 ms sector-erase time (independent of wear) guarantees predictable update latency across product lifetime. |
Use Scenario: Hosting infotainment OS kernel and UI assets in automotive head units where vibration, temperature extremes, and EMI resilience are mandatory. IC Role / Device Role / Timing Role: JEDEC-pin-compatible NOR flash enabling drop-in replacement in legacy designs while delivering lower active/standby power than older technologies. Use Value: 3 µA standby current and auto low-power mode reduce quiescent draw in ignition-off state, extending battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST38VF6401 | Successor device; same density and pinout, but enhanced SuperFlash® process, improved 2.3–3.6 V range, and faster 55 ns access | Not recommended for new designs per Microchip - SST39VF6401B-70-4I-B1KE-T remains viable for legacy support and cost-sensitive replacements | Select SST38VF6401 only for new designs requiring extended voltage margin or tighter timing; verify board-level signal integrity with faster edge rates |
| MX29LV640ETTI-70G | 64 Mbit x16 parallel NOR flash (70 ns), Micron; supports top-boot block protection only, lacks Security ID and CFI Query | Compatible for basic read/write/erase functions but requires firmware adaptation for boot-block location and status polling | Use only if bottom-boot protection is not required and Security ID is unnecessary; validate WP# behavior and erase suspend compatibility |
Compared with SST38VF6401 and MX29LV640ETTI-70G, the SST39VF6401B-70-4I-B1KE-T offers unique bottom-boot hardware protection and integrated Security ID - making it preferable for legacy industrial systems where boot integrity and device authentication are non-negotiable.
Availability
SST39VF6401B-70-4I-B1KE-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics, telecom infrastructure, and automotive infotainment systems requiring stable component supply and long-lifecycle support.
Supply support for SST39VF6401B-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 global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on reliability, longevity, and embedded system integration.
The SST39VF6401B-70-4I-B1KE-T belongs to Microchip's Multi-Purpose Flash Plus (MPF+) family, engineered for robust, low-power, pin-compatible replacements in legacy parallel NOR flash applications demanding high endurance and data retention.
FAQ
What does the "B1KE-T" suffix indicate in SST39VF6401B-70-4I-B1KE-T?
The "B1KE-T" suffix denotes a specific packaging and marking variant: "B1" indicates the 48-ball TFBGA package (8 mm × 10 mm), "K" specifies lead-free (RoHS-compliant) finish, "E" identifies the industrial temperature grade (–40°C to +85°C), and "T" signifies tape-and-reel packaging. This matches the device's documented TFBGA option and industrial operating range.
Does SST39VF6401B-70-4I-B1KE-T support top-boot or bottom-boot hardware protection?
The SST39VF6401B-70-4I-B1KE-T supports bottom-boot hardware protection only, covering the lowest 32 KWord block (address range 000000H–007FFFH). This is confirmed by Microchip's datasheet Table 3 and the "SST39VF6401B" part number designation, which explicitly differentiates it from the SST39VF6402B (top-boot variant).
How is write completion detected for SST39VF6401B-70-4I-B1KE-T?
The SST39VF6401B-70-4I-B1KE-T supports two deterministic software methods: Data# Polling (DQ7 toggles until operation completes, then returns true data) and Toggle Bit (DQ6 toggles during erase/program and stops when complete). Both are valid after the rising edge of the fourth WE#/CE# pulse for programming and sixth for erasing.
Is SST39VF6401B-70-4I-B1KE-T pin-compatible with standard JEDEC x16 NOR flash devices?
Yes - the SST39VF6401B-70-4I-B1KE-T conforms to JEDEC standard pin assignments for x16 memories, including identical CE#, OE#, WE#, RST#, and WP# signal definitions and placement. Its TFBGA pinout (per Figure 3) aligns with industry-standard 48-ball footprints for parallel NOR flash.
What is the purpose of the Security ID feature in SST39VF6401B-70-4I-B1KE-T?
The SST39VF6401B-70-4I-B1KE-T includes a 256-bit Security ID: 128 bits factory-programmed by Microchip and 128 bits user-programmable. It enables device-level authentication and firmware binding - critical for preventing counterfeit modules and enforcing license compliance in OEM systems.
SST39VF6401B-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
SST39VF6401B-70-4I-B1KE-T FAQ
1.How can I place an order for SST39VF6401B-70-4I-B1KE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF6401B-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 SST39VF6401B-70-4I-B1KE-T reliable?
The price and inventory of SST39VF6401B-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 SST39VF6401B-70-4I-B1KE-T is usually 5 days.
3.What payment methods are accepted for SST39VF6401B-70-4I-B1KE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6401B-70-4I-B1KE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF6401B-70-4I-B1KE-T?
SST39VF6401B-70-4I-B1KE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF6401B-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 SST39VF6401B-70-4I-B1KE-T?
For technical support, including SST39VF6401B-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 SST39VF6401B-70-4I-B1KE-T requirements.
6.How does Aetrix verify that SST39VF6401B-70-4I-B1KE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF6401B-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 SST39VF6401B-70-4I-B1KE-T meets industry standards.
7.What is the process for return or replacement of SST39VF6401B-70-4I-B1KE-T?
All SST39VF6401B-70-4I-B1KE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6401B-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 SST39VF6401B-70-4I-B1KE-T part is unused and in its original packaging.
Return procedure for SST39VF6401B-70-4I-B1KE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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