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Microchip Technology SST39VF400A-70-4I-B3KE-T
- Part No.:
- SST39VF400A-70-4I-B3KE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST39VF400A-70-4I-B3KE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,747
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Product details
Overview
SST39VF400A-70-4I-B3KE-T from Microchip Technology is a 4 Mbit (256K × 16) CMOS Multi-Purpose Flash memory IC using SuperFlash technology, operating at 2.7–3.6 V with 70 ns read access time, 14 µs word-program time, and JEDEC-standard x16 asynchronous interface - deployed in industrial embedded systems for firmware storage and configuration updates.
For engineers reviewing the SST39VF400A-70-4I-B3KE-T datasheet, SST39VF400A-70-4I-B3KE-T pinout, SST39VF400A-70-4I-B3KE-T application, or SST39VF400A-70-4I-B3KE-T equivalent, key selection criteria include voltage range compatibility (2.7–3.6 V), industrial temperature rating (–40°C to +85°C), TSOP-48 packaging, sector/block erase architecture, and SuperFlash reliability metrics (100,000 cycles, >100-year data retention).
Technical Context
The SST39VF400A-70-4I-B3KE-T implements a split-gate SuperFlash cell with thick-oxide tunneling injector, enabling fixed erase/program timing independent of cycle count. It supports JEDEC-standard command sets for Word-Program, Sector-Erase (2 KWord), Block-Erase (32 KWord), and Chip-Erase operations.
It uses dual status detection (DQ7 Data# Polling and DQ6 Toggle Bit) for write completion monitoring and integrates hardware noise/glitch protection, VDD power-up/down detection, and software data protection (SDP) with six-byte erase and three-byte program command sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16), supporting 512 KB of x16 data storage |
| Read Access Time | 70 ns - determines maximum bus clock rate for reliable read cycles |
| Supply Voltage | 2.7–3.6 V - enables operation in low-voltage industrial power rails |
| Endurance | 100,000 program/erase cycles - defines field-replaceable firmware update lifetime |
| Data Retention | >100 years - ensures long-term configuration integrity without refresh |
| Operating Temp | –40°C to +85°C - qualified for industrial ambient environments |
| Word-Program Time | 14 µs typical - enables fast in-system firmware patching |
| Erase Architecture | Uniform 2 KWord sectors & 32 KWord blocks - allows granular, low-power partial updates |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | A0–A16 used for 256K × 16 addressing; A17 selects upper half of 512 KB array |
| DQ0–DQ15 | Data I/O | x16 bidirectional data bus with internal latching and tri-state output control |
| CE# | Chip Enable | Active-low chip select - disables device and reduces standby current to 3 µA when high |
| OE# | Output Enable | Active-low output gate - controls data bus visibility during read operations |
| WE# | Write Enable | Active-low write control - initiates program/erase command latching and execution |
| VDD | Power Supply | 2.7–3.6 V supply - powers core logic and flash array; no external VPP required |
| VSS | Ground | Two dedicated ground pins - ensure stable reference for I/O and core circuits |
| NC | No Connect | Unbonded pins (e.g., A18, multiple NC positions) - must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide injector enables fixed 14 µs program and 18 ms erase times across full lifecycle |
| JEDEC x16 Compatibility | Standard pinout and command set - ensures drop-in replacement for legacy parallel NOR flash designs |
| Hardware + Software Protection | Glitch filtering, VDD monitoring, and mandatory SDP command sequences prevent accidental writes during power transitions |
| CFI Support | Common Flash Interface enables automatic device identification and parameter discovery in bootloader code |
| Industrial Temp Range | –40°C to +85°C operation - validated for use in motor drives, PLCs, and outdoor IoT gateways |
Applications
| Industrial HMI Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing boot firmware and UI assets in panel-mounted HMIs exposed to wide thermal cycling and EMI. IC Role / Device Role / Timing Role: Nonvolatile x16 parallel NOR flash providing deterministic 70 ns read access for real-time GUI rendering. Use Value: 100,000-cycle endurance and >100-year retention ensure firmware integrity over 15+ year product lifecycles without backup power. | Use Scenario: Holding calibrated sensor offsets, user preferences, and regulatory compliance logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure configuration store with software data protection preventing corruption during battery swaps or brownouts. Use Value: Dual status detection (DQ6/DQ7) guarantees safe firmware update completion before system reset - critical for FDA-cleared devices. |
| Automotive Body Control Module | Networking Equipment Boot Image |
Use Scenario: Storing CAN gateway firmware and lighting control logic in under-hood modules subject to thermal stress. IC Role / Device Role / Timing Role: Industrial-grade flash with –40°C to +85°C qualification serving as primary boot memory for microcontroller initialization. Use Value: 2.7–3.6 V operation tolerates automotive battery transients; sector-erase enables OTA updates without full reflash downtime. | Use Scenario: Hosting bootloader and FPGA configuration bitstreams in enterprise switches requiring field-upgradable firmware. IC Role / Device Role / Timing Role: High-reliability parallel flash interfaced to ARM-based management processors via standard address/data bus. Use Value: Block-erase capability (32 KWord) allows atomic firmware partition updates - eliminating risk of bricking during partial upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF400A-70-4C-B3KE-T | Commercial temperature grade (0°C to +70°C); identical electrical specs and pinout | Not rated for industrial ambient extremes - unsuitable for factory automation or outdoor deployments | Select only for cost-sensitive consumer or lab-grade applications with controlled environments |
| MX29LV400CBTI-70G | 4 Mbit x16, 70 ns, 3.0–3.6 V; different command set and CFI structure; requires layout adaptation | Lacks SuperFlash's fixed timing - erase/program latency increases with wear; no DQ6 toggle bit support | Use only when migrating legacy designs where SST39VF400A is obsolete and board redesign is feasible |
Compared with SST39VF400A-70-4I-B3KE-T, the commercial-grade variant sacrifices industrial temperature resilience for lower cost, while the MX29LV400CBTI-70G introduces timing variability and command incompatibility - making the original the optimal choice for new industrial designs requiring guaranteed long-term reliability.
Availability
SST39VF400A-70-4I-B3KE-T is available at Aetrix Electronics and suitable for industrial HMI, medical diagnostics, automotive body control, and networking equipment requiring stable component supply and long-lifecycle support.
Supply support for SST39VF400A-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 is a global semiconductor company delivering microcontrollers, analog, FPGA, and memory solutions with emphasis on reliability and long-term support.
The SST39VF series belongs to Microchip's legacy SuperFlash NOR flash product line, designed specifically for industrial and automotive applications demanding robust, low-voltage, parallel-interface nonvolatile memory with deterministic timing and high endurance.
FAQ
What is the operating voltage range for SST39VF400A-70-4I-B3KE-T?
The SST39VF400A-70-4I-B3KE-T operates across 2.7 V to 3.6 V, enabling compatibility with modern low-voltage industrial power supplies and tolerance to automotive battery fluctuations. This range is strictly defined in the datasheet DS25001A and verified for all program, erase, and read functions - unlike the SST39LF400A variant, which requires 3.0–3.6 V.
Does SST39VF400A-70-4I-B3KE-T support sector and block erase modes?
Yes, SST39VF400A-70-4I-B3KE-T supports both uniform 2 KWord sector erase and uniform 32 KWord block erase, initiated via JEDEC-standard six-byte command sequences. These modes allow selective firmware updates without full chip erasure, reducing update time and wear - confirmed in Tables 4 and 8 of DS25001A.
How is write completion detected on SST39VF400A-70-4I-B3KE-T?
SST39VF400A-70-4I-B3KE-T provides two hardware-supported methods: Data# Polling (DQ7 toggles until operation completes, then returns true data) and Toggle Bit (DQ6 alternates between 0 and 1 during operation, then stabilizes). Both are valid after the fourth WE# pulse for programming and sixth for erasing - detailed in pages 8–9 of DS25001A.
What package type is used for SST39VF400A-70-4I-B3KE-T?
SST39VF400A-70-4I-B3KE-T uses a 48-lead TSOP (12 mm × 20 mm) package, as specified in Figure 2 and Section 1 of DS25001A. This surface-mount package is RoHS-compliant and compatible with standard reflow profiles (260°C for 10 seconds), with pin assignments matching JEDEC-standard x16 flash footprints.
Is SST39VF400A-70-4I-B3KE-T suitable for industrial temperature applications?
Yes, SST39VF400A-70-4I-B3KE-T is rated for –40°C to +85°C operation per its "I" suffix and Table 9 in DS25001A, making it qualified for industrial automation, transportation, and outdoor infrastructure. Its 2.7–3.6 V supply range and SuperFlash reliability (100,000 cycles, >100-year retention) further validate suitability for harsh-environment deployments.
SST39VF400A-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:
- 20µs
- 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
SST39VF400A-70-4I-B3KE-T FAQ
1.How can I place an order for SST39VF400A-70-4I-B3KE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF400A-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 SST39VF400A-70-4I-B3KE-T reliable?
The price and inventory of SST39VF400A-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 SST39VF400A-70-4I-B3KE-T is usually 5 days.
3.What payment methods are accepted for SST39VF400A-70-4I-B3KE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF400A-70-4I-B3KE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF400A-70-4I-B3KE-T?
SST39VF400A-70-4I-B3KE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF400A-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 SST39VF400A-70-4I-B3KE-T?
For technical support, including SST39VF400A-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 SST39VF400A-70-4I-B3KE-T requirements.
6.How does Aetrix verify that SST39VF400A-70-4I-B3KE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF400A-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 SST39VF400A-70-4I-B3KE-T meets industry standards.
7.What is the process for return or replacement of SST39VF400A-70-4I-B3KE-T?
All SST39VF400A-70-4I-B3KE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF400A-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 SST39VF400A-70-4I-B3KE-T part is unused and in its original packaging.
Return procedure for SST39VF400A-70-4I-B3KE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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