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Microchip Technology SST39VF6401B-70-4I-EKE-T
- Part No.:
- SST39VF6401B-70-4I-EKE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF6401B-70-4I-EKE-T.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,870
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Product details
Overview
SST39VF6401B-70-4I-EKE-T from Microchip is a 64 Mbit (4M × 16) CMOS Multi-Purpose Flash Plus memory IC with bottom-block hardware write protection, 70 ns read access time, 2.7–3.6 V single-supply operation, and JEDEC-standard x16 asynchronous interface - used for firmware storage and configuration in industrial embedded controllers.
For engineers reviewing the SST39VF6401B-70-4I-EKE-T datasheet, SST39VF6401B-70-4I-EKE-T pinout, SST39VF6401B-70-4I-EKE-T application, or SST39VF6401B-70-4I-EKE-T equivalent, key selection considerations include bottom-boot block protection (000000H–007FFFH), 100,000-cycle endurance, 3 µA standby current, sector/block/chip erase support, and TSOP-48 packaging compatibility with legacy x16 NOR flash designs.
Technical Context
The SST39VF6401B-70-4I-EKE-T implements SuperFlash split-gate technology with thick-oxide tunneling injection, enabling fixed 7 µs word-program and 18 ms sector/block-erase times independent of cycle count. It uses standard microprocessor bus timing with latched address/data and supports JEDEC command-set compatibility for drop-in replacement in existing NOR flash systems.
Hardware data protection includes WP#-controlled bottom 32 KWord block lock, RST#-initiated hard reset, and noise/glitch immunity on WE#/CE#. Software Data Protection requires validated three-byte (Program) or six-byte (Erase) command sequences, with status detection via DQ6 toggle bit or DQ7 polling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16), providing 8 MB of nonvolatile storage for boot code and configuration data |
| Read Access Time | 70 ns - enables direct execution (XIP) from flash in systems with ≤14 MHz bus clocks |
| Supply Voltage | 2.7–3.6 V - compatible with 3.3 V logic rails without level shifting |
| Endurance | 100,000 program/erase cycles - supports field firmware updates over 10+ years in industrial deployments |
| Data Retention | >100 years - ensures long-term reliability without refresh in unpowered storage |
| Standby Current | 3 µA typical - minimizes power draw in sleep-mode applications like remote sensors |
| Erase Granularity | Uniform 2 KWord sectors (4 KB) and 32 KWord blocks (64 KB) - enables fine-grained firmware patching |
| Protection Scheme | Hardware bottom-block protection (000000H–007FFFH) - prevents accidental overwrite of boot loader |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, surface-mount. Pinout conforms to JEDEC standard x16 flash pin assignments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus (AMS = A21); A10–A0 used for command addressing per JEDEC |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with tri-state outputs controlled by CE# and OE# |
| WE#, CE#, OE# | Control Inputs | Standard x16 asynchronous control: Write Enable, Chip Enable, Output Enable |
| WP# | Write Protect | Active-low hardware lock for bottom 32 KWord boot block (000000H–007FFFH) |
| RST# | Reset Input | Hardware reset to Read mode; terminates in-progress erase/program operations |
| VDD, VSS | Power/Ground | Single 2.7–3.6 V supply; dual ground pins for noise reduction in high-speed reads |
| NC | No Connect | Unbonded pins (A18, A19 in TSOP layout) - must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows read access during active sector/block erase - critical for real-time systems requiring concurrent firmware validation |
| Security ID | 256-bit space (128-bit factory + 128-bit user) - enables device authentication and secure boot key storage |
| Auto Low Power Mode | Reduces active read current from 9 mA to 3 µA after valid access - cuts dynamic power in burst-read applications |
| CFI Support | JEDEC-standard Common Flash Interface - enables automatic driver detection and vendor-agnostic firmware tools |
| Toggle Bit Status | DQ6 toggling indicates ongoing erase/program - eliminates need for timer-based polling in host firmware |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing boot loader, runtime firmware, and calibration tables in programmable logic controllers operating at -40°C to +85°C. IC Role / Device Role / Timing Role: Nonvolatile x16 NOR flash providing XIP-capable instruction storage with 70 ns access for deterministic real-time execution. Use Value: Bottom-block protection prevents corruption of boot code during field firmware updates; 100-year data retention ensures calibration integrity across product lifetime. |
Use Scenario: Holding FDA-compliant device configuration profiles, sensor calibration offsets, and audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, low-power configuration memory supporting CFI auto-detection and Erase-Suspend for concurrent diagnostics during update. Use Value: 3 µA standby current extends battery life; Security ID enables cryptographic binding of firmware to hardware identity. |
| Telecom Base Station Boot ROM | Automotive Infotainment System Flash |
Use Scenario: Hosting bootloader and FPGA configuration bitstreams in outdoor telecom cabinets exposed to thermal cycling. IC Role / Device Role / Timing Role: High-reliability flash with fixed 18 ms erase time - avoids software de-rating required by aging alternative technologies. Use Value: SuperFlash technology delivers consistent performance over 100,000 cycles; TSOP-48 footprint matches legacy board layouts. |
Use Scenario: Storing infotainment OS kernel, UI assets, and map data in automotive head units with ASIL-B functional safety requirements. IC Role / Device Role / Timing Role: JEDEC-compatible x16 interface enables seamless integration with ARM Cortex-A application processors. Use Value: Sector-erase capability allows incremental map updates without full reflash; hardware WP# protects critical boot partition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6402B-70-4I-EKE-T | Top-block protection (3F8000H–3FFFFFH) instead of bottom-block; otherwise identical pinout, timing, and command set | Used where boot code resides in top memory region; not interchangeable without firmware address remapping | Select only if system architecture requires top-boot protection - no PCB change needed, but software must validate address range |
| SST38VF6401-70-4I-EKE-T | Newer generation with same density/timing but enhanced reliability, lower 2.3–3.6 V voltage range, and extended -40°C to +105°C temp grade | Recommended for new designs per Microchip; supports higher ambient temps and wider supply tolerance | Preferred for new projects requiring longer lifecycle support; requires validation of voltage margin and thermal derating |
Compared with SST39VF6401B-70-4I-EKE-T, SST39VF6402B-70-4I-EKE-T offers mirrored block protection for top-boot systems, while SST38VF6401-70-4I-EKE-T provides improved voltage flexibility and temperature range - both retain JEDEC x16 compatibility but differ in protection scope and longevity roadmap.
Availability
SST39VF6401B-70-4I-EKE-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic devices, telecom base stations, and automotive infotainment systems requiring stable component supply and long-term obsolescence management.
Supply support for SST39VF6401B-70-4I-EKE-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 components, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The SST39VF6401B-70-4I-EKE-T belongs to Microchip's Multi-Purpose Flash Plus (MPF+) family, designed specifically for cost-sensitive, high-reliability embedded systems requiring robust firmware storage with hardware-level data protection.
FAQ
What is the memory organization of the SST39VF6401B-70-4I-EKE-T?
The SST39VF6401B-70-4I-EKE-T is organized as 4M × 16, delivering 64 Mbit (8 MB) of storage in uniform 2 KWord (4 KB) sectors and 32 KWord (64 KB) blocks. Its bottom 32 KWord block (000000H–007FFFH) is hardware-protected via the WP# pin, making it ideal for secure boot loader storage in the SST39VF6401B-70-4I-EKE-T.
Does the SST39VF6401B-70-4I-EKE-T support JEDEC-standard commands?
Yes, the SST39VF6401B-70-4I-EKE-T implements JEDEC-standard pin assignments and software command sequences for Program, Sector-Erase (50H), Block-Erase (30H), and Chip-Erase (10H). It also supports CFI Query mode (98H) for automated driver detection - all fully documented in the SST39VF6401B-70-4I-EKE-T datasheet.
What is the purpose of the RST# pin on the SST39VF6401B-70-4I-EKE-T?
The RST# pin on the SST39VF6401B-70-4I-EKE-T provides hardware-initiated recovery: holding RST# low for ≥TRP aborts any active Program or Erase operation and forces the device back into Read mode. After release, a minimum TRHR delay is required before valid reads resume - a critical feature for fault recovery in the SST39VF6401B-70-4I-EKE-T.
How does hardware write protection work on the SST39VF6401B-70-4I-EKE-T?
Hardware write protection on the SST39VF6401B-70-4I-EKE-T is enabled by grounding the WP# pin, which locks the bottom 32 KWord boot block (000000H–007FFFH) against Program and Erase operations. If WP# floats, an internal pull-up disables protection - this behavior is explicitly defined for the SST39VF6401B-70-4I-EKE-T in its datasheet Table 3.
Is the SST39VF6401B-70-4I-EKE-T still recommended for new designs?
No - Microchip explicitly marks the SST39VF6401B-70-4I-EKE-T as "Not Recommended for New Designs" in DS20005008C. The SST38VF6401-70-4I-EKE-T is the designated replacement, offering improved voltage range (2.3–3.6 V), extended temperature grade (-40°C to +105°C), and continued long-term support - essential context when evaluating the SST39VF6401B-70-4I-EKE-T.
SST39VF6401B-70-4I-EKE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 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-TSOP
SST39VF6401B-70-4I-EKE-T FAQ
1.How can I place an order for SST39VF6401B-70-4I-EKE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF6401B-70-4I-EKE-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-EKE-T reliable?
The price and inventory of SST39VF6401B-70-4I-EKE-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-EKE-T is usually 5 days.
3.What payment methods are accepted for SST39VF6401B-70-4I-EKE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6401B-70-4I-EKE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF6401B-70-4I-EKE-T?
SST39VF6401B-70-4I-EKE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF6401B-70-4I-EKE-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-EKE-T?
For technical support, including SST39VF6401B-70-4I-EKE-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-EKE-T requirements.
6.How does Aetrix verify that SST39VF6401B-70-4I-EKE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF6401B-70-4I-EKE-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-EKE-T meets industry standards.
7.What is the process for return or replacement of SST39VF6401B-70-4I-EKE-T?
All SST39VF6401B-70-4I-EKE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6401B-70-4I-EKE-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-EKE-T part is unused and in its original packaging.
Return procedure for SST39VF6401B-70-4I-EKE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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