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Microchip Technology SST39VF402C-70-4I-B3KE-T
- Part No.:
- SST39VF402C-70-4I-B3KE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST39VF402C-70-4I-B3KE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,312
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Product details
Overview
SST39VF402C-70-4I-B3KE-T from Microchip is a 4 Mbit (256K × 16) Multi-Purpose Flash Plus (MPF+) memory IC designed for embedded firmware and configuration storage in industrial and communications systems. It operates from 2.7–3.6 V, delivers 70 ns read access time, supports hardware block protection on the top 8 KWord boot sector, and features erase-suspend/resume capability for real-time system responsiveness.
For engineers reviewing the SST39VF402C-70-4I-B3KE-T datasheet, SST39VF402C-70-4I-B3KE-T pinout, SST39VF402C-70-4I-B3KE-T application, or SST39VF402C-70-4I-B3KE-T equivalent, key selection considerations include its TSOP-48 package, JEDEC-compliant x16 parallel interface, top-boot architecture, SuperFlash® endurance (100,000 cycles), and RY/BY# status signaling for non-blocking firmware updates.
Technical Context
This device implements a CMOS SuperFlash® split-gate cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count-unlike conventional flash technologies where timing degrades over endurance life. Its command-set follows JEDEC-standard x16 flash protocols, including six-byte sector/block/chip-erase sequences and three-byte word-program initiation.
The SST39VF402C-70-4I-B3KE-T integrates hardware write protection via WP# for the top 8 KWord boot block (3E000H–3FFFFH), a dedicated RST# pin for hardware reset to read mode, and dual status detection (DQ6 toggle bit + DQ7 data# polling + open-drain RY/BY#) to manage concurrent background operations without CPU polling overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16 organization); supports 16-bit parallel data bus for efficient firmware code execution |
| Read Access Time | 70 ns maximum; enables direct XIP (execute-in-place) operation from flash in microcontroller-based systems |
| Supply Voltage | 2.7–3.6 V; compatible with 3.3 V logic rails and tolerant of brown-out conditions down to 2.7 V |
| Endurance | 100,000 program/erase cycles (typical); sufficient for field firmware updates over 10+ years in industrial control applications |
| Data Retention | Greater than 100 years; ensures long-term reliability of stored bootloader and calibration data |
| Erase Architecture | Uniform 2 KWord sectors + flexible blocks (seven 32 KWord, one 16 KWord, two 4 KWord, one 8 KWord); allows granular firmware patching |
| Write Protection | Hardware top-boot block protection (3E000H–3FFFFH); prevents accidental overwrite of critical startup code |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus; A17 is most significant; AMS = A17 for sector/block selection during erase commands |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; latched internally during writes; tri-stated when CE# or OE# is high |
| CE# | Chip Enable | Active-low chip select; must be low to enable read/write operations; controls address/data latch timing |
| OE# | Output Enable | Active-low output gate; enables data output only when CE# and OE# are both low |
| WE# | Write Enable | Active-low control for write cycles; falling edge latches address; rising edge latches data/command |
| WP# | Write Protect | Active-low hardware lock for top 8 KWord boot block; grounded to prevent inadvertent erase/program |
| RST# | Reset | Active-low hardware reset; forces device into read mode and terminates ongoing erase/program operations |
| RY/BY# | Ready/Busy# | Open-drain status output; pulled low during internal erase/program; requires external 10–100 kΩ pull-up |
| VDD | Power Supply | 2.7–3.6 V supply; powers core logic and SuperFlash® array; internal VPP generation eliminates external charge pump |
| VSS | Ground | Reference ground for all signals and internal circuitry; two dedicated pins for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows real-time read access to non-suspended sectors during background erase, enabling responsive HMI or communication stacks |
| Auto Low Power Mode | Reduces active read current from 5 mA to 3 µA after valid read access-ideal for battery-backed or energy-constrained systems |
| Security ID Space | 128-bit factory-programmed ID + 128-word user-programmable space, locked permanently to prevent tampering or cloning |
| SuperFlash® Technology | Fixed 7 µs word-program and 18 ms sector/block-erase times across full endurance life-no software de-rating required |
| JEDEC Standard Compliance | Fully compatible with industry-standard x16 flash command sets and pinouts, simplifying migration from legacy parallel NOR devices |
Applications
| Industrial PLC Firmware Storage | Telecom Baseband Configuration |
|---|---|
Use Scenario: Storing boot loader, FPGA configuration bitstreams, and runtime parameter tables in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parallel NOR flash providing XIP-capable firmware storage with deterministic 70 ns access for real-time task scheduling. Use Value: Top-boot hardware protection prevents corruption of safety-critical startup code during field firmware updates via Modbus or EtherCAT. |
Use Scenario: Holding radio calibration data, channel mapping tables, and protocol stack configuration in 4G/LTE small-cell base stations. IC Role / Device Role / Timing Role: High-reliability configuration memory supporting concurrent read (during operation) and background sector-erase (for OTA updates). Use Value: Erase-suspend capability enables uninterrupted packet processing while updating RF calibration parameters in adjacent memory sectors. |
| Medical Imaging System Boot Memory | Automotive Infotainment Head Unit |
Use Scenario: Storing certified bootloader and DICOM image processing firmware in FDA-regulated diagnostic ultrasound equipment. IC Role / Device Role / Timing Role: Secure, long-retention flash with 100-year data retention and hardware write protection for regulatory compliance. Use Value: Factory-programmed Security ID provides traceable device authentication; locked user ID space stores calibration certificates with anti-tamper assurance. |
Use Scenario: Hosting infotainment OS kernel, UI assets, and vehicle-specific configuration profiles in automotive head units. IC Role / Device Role / Timing Role: Parallel interface flash supporting fast boot from cold start and seamless firmware delta updates over CAN FD. Use Value: Uniform 2 KWord sectors allow precise patching of navigation map data without erasing entire OS partition-reducing update time and risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF402C-70-4C-B3KE-T | Same die and pinout; commercial temperature range (0°C to +70°C) vs. industrial (-40°C to +85°C) | Lacks extended thermal qualification for harsh environments like factory automation or outdoor telecom cabinets | Select only for cost-sensitive consumer or lab-grade designs with controlled ambient conditions |
| MX29LV400CTTI-70G | 4 Mbit x16, 70 ns, 3.0–3.6 V; no erase-suspend; bottom-boot architecture; different command set and pinout | Requires PCB redesign and firmware driver changes; lacks top-boot protection and real-time suspend capability | Consider only if legacy design reuse mandates MXIC compatibility and top-boot protection is not required |
Compared with SST39VF402C-70-4I-B3KE-T, the -4C variant sacrifices industrial temperature support for lower cost, while the MX29LV400CTTI-70G requires hardware and software requalification due to architectural and command-set differences-neither offers drop-in replacement capability.
Availability
SST39VF402C-70-4I-B3KE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, telecom baseband configuration, and medical imaging system boot memory requiring stable component supply across extended product lifecycles.
Supply support for SST39VF402C-70-4I-B3KE-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 microcontrollers, analog components, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its nonvolatile memory portfolio.
The SST39VF402C-70-4I-B3KE-T belongs to the Multi-Purpose Flash Plus (MPF+) family, engineered for high-reliability embedded systems demanding deterministic timing, long data retention, and robust in-field update capabilities.
FAQ
What is the operating voltage range for SST39VF402C-70-4I-B3KE-T?
The SST39VF402C-70-4I-B3KE-T operates from 2.7 V to 3.6 V for both read and write operations. This wide supply range supports compatibility with 3.3 V systems and tolerates transient brown-out conditions down to 2.7 V without data corruption or functional interruption. The device does not require separate VPP programming voltage-internal charge pump generates necessary high-voltage pulses.
Does SST39VF402C-70-4I-B3KE-T support hardware write protection?
Yes, SST39VF402C-70-4I-B3KE-T includes hardware block protection activated by the WP# pin. When WP# is grounded, it protects the top 8 KWord boot sector (3E000H–3FFFFH) from accidental program or erase operations-critical for safeguarding bootloader code. If WP# is left floating, an internal pull-up holds it high, disabling protection and allowing full memory access.
What package type is used for SST39VF402C-70-4I-B3KE-T?
SST39VF402C-70-4I-B3KE-T is supplied in a 48-lead TSOP (Thin Small Outline Package) measuring 12 mm × 20 mm. This surface-mount package complies with JEDEC MO-142 standards, supports standard reflow soldering profiles, and provides reliable mechanical and thermal performance in industrial and telecom applications.
How does SST39VF402C-70-4I-B3KE-T indicate completion of an erase or program operation?
SST39VF402C-70-4I-B3KE-T provides three concurrent status mechanisms: (1) RY/BY# open-drain pin (low = busy), (2) DQ6 toggle bit (toggling during operation, steady when complete), and (3) DQ7 data# polling (complement of true data during operation, true data when complete). These allow flexible, non-blocking host software implementation without fixed timeout delays.
Is SST39VF402C-70-4I-B3KE-T compatible with JEDEC-standard x16 flash interfaces?
Yes, SST39VF402C-70-4I-B3KE-T conforms fully to JEDEC standard pinouts and command sets for x16 parallel NOR flash devices. It supports standard read, word-program, sector-erase, block-erase, and chip-erase commands-including the six-byte erase sequences and three-byte program initiation-ensuring interoperability with existing flash controllers and firmware drivers.
SST39VF402C-70-4I-B3KE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-TFBGA
- 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-TFBGA (6x8)
SST39VF402C-70-4I-B3KE-T FAQ
1.How can I place an order for SST39VF402C-70-4I-B3KE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF402C-70-4I-B3KE-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 SST39VF402C-70-4I-B3KE-T reliable?
The price and inventory of SST39VF402C-70-4I-B3KE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF402C-70-4I-B3KE-T is usually 5 days.
3.What payment methods are accepted for SST39VF402C-70-4I-B3KE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF402C-70-4I-B3KE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF402C-70-4I-B3KE-T?
SST39VF402C-70-4I-B3KE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF402C-70-4I-B3KE-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 SST39VF402C-70-4I-B3KE-T?
For technical support, including SST39VF402C-70-4I-B3KE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF402C-70-4I-B3KE-T requirements.
6.How does Aetrix verify that SST39VF402C-70-4I-B3KE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF402C-70-4I-B3KE-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 SST39VF402C-70-4I-B3KE-T meets industry standards.
7.What is the process for return or replacement of SST39VF402C-70-4I-B3KE-T?
All SST39VF402C-70-4I-B3KE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF402C-70-4I-B3KE-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 SST39VF402C-70-4I-B3KE-T part is unused and in its original packaging.
Return procedure for SST39VF402C-70-4I-B3KE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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