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Microchip Technology SST39VF401C-70-4I-MAQE-T
- Part No.:
- SST39VF401C-70-4I-MAQE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF401C-70-4I-MAQE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,653
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Product details
Overview
SST39VF401C-70-4I-MAQE-T from Microchip is a 4 Mbit (256K × 16) CMOS Multi-Purpose Flash Plus memory IC with SuperFlash® technology, designed for embedded program/data storage in microcontroller-based systems. It operates at 2.7–3.6 V, delivers 70 ns read access time, supports hardware block protection on the bottom 8 KWord boot sector, and features erase-suspend/resume capability for real-time firmware updates.
For engineers reviewing the SST39VF401C-70-4I-MAQE-T datasheet, SST39VF401C-70-4I-MAQE-T pinout, SST39VF401C-70-4I-MAQE-T application, or SST39VF401C-70-4I-MAQE-T equivalent, this page provides verified technical context, JEDEC-compliant x16 interface details, boot-block protection mapping, SuperFlash endurance/reliability data, and validated alternative flash parts for industrial firmware storage designs.
Technical Context
The SST39VF401C-70-4I-MAQE-T implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, enabling fixed 7 µs word-program and 18 ms sector/block-erase times independent of cycle count. It uses standard JEDEC x16 flash command sets and supports three software status detection methods: Data# Polling (DQ7), Toggle Bits (DQ6/DQ2), and Ready/Busy# (open-drain RY/BY#).
Hardware protection includes dedicated WP# pin for bottom 8 KWord boot-block lock, RST# for hardware reset to read mode, and noise/glitch immunity (<5 ns WE#/CE# pulse rejection). The device conforms to JEDEC-standard pinouts and supports CFI Query mode for automatic configuration detection in host systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16), directly replaces legacy 28Fxxx/29Fxxx families in 16-bit bus systems |
| Read Access Time | 70 ns - enables direct connection to 14 MHz microcontrollers without wait states |
| Supply Voltage | 2.7–3.6 V - supports single-supply operation in battery-backed or low-voltage industrial systems |
| Endurance | 100,000 program/erase cycles - sufficient for field firmware updates over 10+ years of service |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage applications |
| Power Consumption | 5 mA active / 3 µA standby - reduces system-level power budget in always-on embedded devices |
| Erase Architecture | Uniform 2 KWord sectors + flexible blocks (seven 32K, one 16K, two 4K, one 8K) - enables granular firmware partitioning |
Pinout & Package
Package: 48-ball WFBGA (4 mm × 6 mm), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus; AMS = A17 selects top/bottom boot block during erase operations |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with internal latching; tri-stated when CE# or OE# high |
| CE# | Chip Enable | Active-low chip select; must be low for all write/erase commands and read access |
| OE# | Output Enable | Active-low output gate; controls data bus drive during read cycles only |
| WE# | Write Enable | Active-low control for latching addresses/data during program/erase command sequences |
| WP# | Write Protect | Active-low hardware lock for bottom 8 KWord boot sector (00000H–01FFFH) |
| RST# | Reset | Active-low hardware reset to read mode; terminates in-progress erase/program operations |
| RY/BY# | Ready/Busy# | Open-drain status output requiring external 10–100 kΩ pull-up; low = operation in progress |
| VDD | Power Supply | 2.7–3.6 V supply; powers internal charge pump for erase/program operations |
| VSS | Ground | Reference ground for all I/O and core logic; two dedicated pins for noise reduction |
| NC | No Connection | Unbonded balls (A2, A1, A5, A6, A7, A9, A10, A11, A12, A13, A14, A15, A16, DQ1, DQ2, DQ3, DQ4, DQ5, DQ6, DQ7, DQ11, DQ13, DQ14, DQ15); must be left floating |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows real-time reading from non-suspended sectors during active erase, enabling interrupt-driven firmware updates |
| Auto Low Power Mode | Reduces active read current from 5 mA to 3 µA after valid read access-no software overhead required |
| Security ID Space | 128-bit factory-programmed ID + 128-word user-programmable space, locked permanently after programming |
| Hardware Block Protection | Bottom 8 KWord boot sector protected via WP# pin-prevents accidental overwrite of bootloader code |
| SuperFlash Reliability | Split-gate cell design achieves >100-year data retention and 100,000-cycle endurance without performance degradation |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing and updating firmware for programmable logic controllers operating in harsh factory environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile program memory holding bootloader, runtime OS, and application logic; accessed via 16-bit parallel bus during cold/warm boot and field upgrades. Use Value: Bottom boot-block protection prevents corruption of critical bootloader during remote firmware updates; 100,000-cycle endurance supports lifetime field revisions. | Use Scenario: Secure storage of certified bootloader and diagnostic firmware in Class II medical instruments requiring traceable, tamper-resistant memory. IC Role / Device Role / Timing Role: Primary firmware storage with Security ID space used to store device-specific cryptographic keys and calibration signatures. Use Value: Factory-programmed 128-bit ID enables secure device authentication; hardware WP# lock ensures bootloader integrity per FDA regulatory requirements. |
| Automotive Body Control Module | Networking Equipment Configuration Storage |
Use Scenario: Holding configuration tables, sensor calibration data, and feature-enable bits in automotive BCMs exposed to 105°C ambient and load-dump transients. IC Role / Device Role / Timing Role: EEPROM-replacement data storage with fast 7 µs word-program and 18 ms sector-erase for dynamic parameter updates. Use Value: 2.7–3.6 V operation tolerates automotive battery voltage fluctuations; >100-year data retention meets OEM 15-year vehicle lifecycle requirements. | Use Scenario: Storing switch/router configuration profiles, MAC address tables, and firmware patches in carrier-grade networking gear requiring zero-downtime updates. IC Role / Device Role / Timing Role: Dual-purpose flash supporting both firmware image storage and runtime configuration scratchpad via sector-erase granularity. Use Value: Erase-suspend capability allows live packet forwarding during background firmware validation; uniform 2 KWord sectors enable atomic config save/restore. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF402C-70-4I-MAQE-T | Top-boot architecture (3E000H–3FFFFH protected); identical timing, voltage, and package | Used where bootloader resides in top sector instead of bottom; requires PCB address decode change | Select when system design allocates boot code to upper memory map region |
| MX29LV400CTTI-70G | 4 Mbit x16, 70 ns, 3.0–3.6 V only; no erase-suspend; different command set and CFI layout | Lacks real-time suspend capability; requires firmware rewrite for status polling logic | Choose for cost-sensitive designs where suspend/resume is not required and voltage range is constrained to 3.0–3.6 V |
Compared with SST39VF401C-70-4I-MAQE-T, SST39VF402C-70-4I-MAQE-T offers identical performance but protects the top boot sector instead of bottom-requiring address map alignment-while MX29LV400CTTI-70G sacrifices erase-suspend functionality and operates only at 3.0–3.6 V, limiting use in battery-powered or wide-input-range systems.
Availability
SST39VF401C-70-4I-MAQE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, and automotive body control module applications requiring stable component supply across extended product lifecycles.
Supply support for SST39VF401C-70-4I-MAQE-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 Inc. is a leading provider of microcontroller, analog, FPGA, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its nonvolatile memory portfolio.
The SST39VF401C-70-4I-MAQE-T belongs to the Multi-Purpose Flash Plus (MPF+) family, engineered specifically for embedded systems needing reliable, low-power, field-upgradable program and configuration storage with hardware-level security and boot-block protection.
FAQ
What is the boot-block protection scheme implemented by SST39VF401C-70-4I-MAQE-T?
The SST39VF401C-70-4I-MAQE-T implements bottom hardware block protection on the 8 KWord sector spanning address range 00000H–01FFFH. This protection is activated when the WP# pin is driven low, preventing any program or erase operations on that region. When WP# is left floating, an internal pull-up holds it high, disabling protection and allowing full array access. This scheme safeguards bootloader code from accidental overwrite during firmware updates.
Does SST39VF401C-70-4I-MAQE-T support erase-suspend functionality, and how is it used?
Yes, SST39VF401C-70-4I-MAQE-T supports erase-suspend/resume via the B0H command. During an active sector or block erase, issuing this command halts the operation and places the device in read mode within 20 µs, allowing the host to read from unprotected sectors or program other regions. Resume is triggered with the 30H command. This enables real-time system responsiveness during background firmware updates without interrupting critical tasks.
What package type is used for SST39VF401C-70-4I-MAQE-T, and what are its key mechanical attributes?
SST39VF401C-70-4I-MAQE-T uses a 48-ball WFBGA package measuring 4 mm × 6 mm with 0.5 mm ball pitch. It is RoHS-compliant and rated at moisture sensitivity level 3 (MSL3), requiring bake conditioning before reflow if exposed to ambient beyond floor life. The package supports high-density PCB layouts and thermal performance suitable for industrial temperature range operation (–40°C to +85°C).
How does SST39VF401C-70-4I-MAQE-T indicate completion of program or erase operations?
SST39VF401C-70-4I-MAQE-T provides three concurrent status detection methods: Data# Polling (DQ7 toggles until completion), Toggle Bits (DQ6 alternates during operation, stops when done), and Ready/Busy# (RY/BY# open-drain output pulled low during operation). All methods are valid after specific WE# edge transitions defined in the datasheet, enabling flexible host software or hardware polling strategies without requiring external timers.
What is the role of the Security ID feature in SST39VF401C-70-4I-MAQE-T, and how is it configured?
The Security ID feature in SST39VF401C-70-4I-MAQE-T provides a 128-bit factory-programmed identifier and a 128-word user-programmable space. The factory segment is permanently locked; the user segment is programmed using the A5H command and locked with the 85H command to prevent further writes. Both segments are non-erasable and readable via the 88H command sequence, enabling device authentication and secure firmware binding in regulated applications.
SST39VF401C-70-4I-MAQE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-WFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 256K 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-WFBGA (6x4)
SST39VF401C-70-4I-MAQE-T FAQ
1.How can I place an order for SST39VF401C-70-4I-MAQE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF401C-70-4I-MAQE-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 SST39VF401C-70-4I-MAQE-T reliable?
The price and inventory of SST39VF401C-70-4I-MAQE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF401C-70-4I-MAQE-T is usually 5 days.
3.What payment methods are accepted for SST39VF401C-70-4I-MAQE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF401C-70-4I-MAQE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF401C-70-4I-MAQE-T?
SST39VF401C-70-4I-MAQE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF401C-70-4I-MAQE-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 SST39VF401C-70-4I-MAQE-T?
For technical support, including SST39VF401C-70-4I-MAQE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF401C-70-4I-MAQE-T requirements.
6.How does Aetrix verify that SST39VF401C-70-4I-MAQE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF401C-70-4I-MAQE-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 SST39VF401C-70-4I-MAQE-T meets industry standards.
7.What is the process for return or replacement of SST39VF401C-70-4I-MAQE-T?
All SST39VF401C-70-4I-MAQE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF401C-70-4I-MAQE-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 SST39VF401C-70-4I-MAQE-T part is unused and in its original packaging.
Return procedure for SST39VF401C-70-4I-MAQE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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