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Microchip Technology SST39VF400A-70-4C-EKE
- Part No.:
- SST39VF400A-70-4C-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF400A-70-4C-EKE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:429
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Product details
Overview
SST39VF400A-70-4C-EKE from Microchip Technology is a 4 Mbit (256K × 16) CMOS Multi-Purpose Flash memory IC using SuperFlash technology, supporting single-supply 2.7–3.6V operation for both read and write functions, with 70 ns read access time, 100,000 program/erase cycles endurance, and >100 years data retention. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring field-upgradable firmware.
For engineers reviewing the SST39VF400A-70-4C-EKE datasheet, SST39VF400A-70-4C-EKE pinout, SST39VF400A-70-4C-EKE application, or SST39VF400A-70-4C-EKE equivalent, key selection criteria include x16 asynchronous interface compatibility, JEDEC-standard command set support, sector/block erase granularity (2 KWord / 32 KWord), toggle-bit/data# polling status detection, and TSOP-48 package footprint alignment with legacy board designs.
Technical Context
The SST39VF400A-70-4C-EKE implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, enabling fixed erase/program timing independent of cycle count. Its control logic accepts standard JEDEC-compliant command sequences (e.g., six-byte sector/block erase, three-byte word-program initiation) via CE#, OE#, and WE# signals.
It supports hardware write inhibition (via VDD power-up/down detection, noise/glitch filtering <5 ns) and software data protection (SDP) with mandatory three-byte unlock sequence for programming and six-byte sequence for erasing. CFI Query mode provides standardized device geometry and timing parameter reporting at known address offsets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16), directly maps to 512 KB of x16-addressable storage space |
| Read Access Time | 70 ns - determines maximum sustained read throughput in synchronous bus interfaces |
| Supply Voltage Range | 2.7–3.6V - enables direct interfacing with 3.3V logic without level-shifting |
| Endurance | 100,000 program/erase cycles - supports frequent firmware updates over product lifetime |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage applications |
| Word-Program Time | 14 µs typical - defines minimum time between successive word writes in burst update scenarios |
| Sector Erase Size | 2 KWord (4 KB) - allows fine-grained firmware patching without full chip reprogramming |
| Block Erase Size | 32 KWord (64 KB) - balances speed and granularity for larger configuration or image updates |
Pinout & Package
This device is packaged in a 48-lead TSOP (12 mm × 20 mm), compliant with JEDEC MO-142AC standard, and features a standard x16 asynchronous parallel interface with latched address/data lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | A0–A16 used for 256K × 16 addressing; A17 selects upper/lower half of 512 KB space per JEDEC standard |
| DQ0–DQ15 | Data I/O | Bi-directional x16 data bus; tri-stated when CE# or OE# high; internally latched during write |
| CE# | Chip Enable | Active-low chip select; device enters standby (3 µA) when high |
| OE# | Output Enable | Active-low output gate; controls DQ bus drive during read; no effect on write operations |
| WE# | Write Enable | Active-low write strobe; latches address/data and initiates internal program/erase commands |
| VDD | Power Supply | 2.7–3.6V supply; powers core logic and charge pump; internal VPP generation eliminates external high-voltage requirement |
| VSS | Ground | Reference return for all I/O and core circuitry; two dedicated pins ensure low-impedance grounding |
| NC | No Connect | Unbonded pins (e.g., A18 in 4 Mbit variant); must remain floating per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash cell architecture | Split-gate design with thick-oxide injector enables fixed 14 µs program and 18 ms erase times across full lifecycle |
| JEDEC-standard command set | Compatible with industry-standard flash controllers and bootloader firmware without custom driver development |
| Hardware + software data protection | VDD monitoring, glitch filtering, and mandatory unlock sequences prevent accidental writes during power transitions |
| CFI Query support | Enables automatic runtime identification of density, timing, and erase geometry via standardized register map |
| Uniform sector/block organization | 128 sectors × 4 KB + 8 blocks × 64 KB simplifies memory management in real-time OS and bootloaders |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Bootloader Memory |
|---|---|
Use Scenario: Storing and updating ladder logic programs and I/O configuration tables in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile x16 parallel flash providing direct CPU bus interface for fast code execution and secure firmware rollback capability. Use Value: 100,000-cycle endurance and >100-year retention ensure reliable operation over 15+ year equipment lifespans without maintenance. | Use Scenario: Hosting boot code and calibration data in engine control units where ISO 16750-2 compliance requires stable operation across -40°C to +85°C. IC Role / Device Role / Timing Role: JEDEC-compliant flash memory enabling certified bootloader validation and secure OTA update staging. Use Value: 2.7–3.6V operation and industrial temperature rating (-40°C to +85°C) eliminate need for voltage regulation or thermal derating. |
| Medical Device Configuration Storage | Networking Equipment Image Backup |
Use Scenario: Retaining user-defined therapy parameters and device calibration constants in Class II medical instruments subject to IEC 62304 requirements. IC Role / Device Role / Timing Role: Secure, tamper-resistant nonvolatile memory with hardware/software write protection for audit-trail-critical data. Use Value: Toggle-bit and Data# polling provide deterministic write completion detection required for safety-critical state machine sequencing. | Use Scenario: Maintaining redundant firmware images and configuration snapshots in enterprise switches and routers for zero-downtime failover. IC Role / Device Role / Timing Role: High-reliability parallel flash supporting dual-image partitioning and atomic sector-level updates. Use Value: Uniform 4 KB sector erase enables rapid patch deployment without disrupting active network services. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39LF400A-55-4C-EKE | 55 ns read access; 3.0–3.6V only; identical density, pinout, and command set | Requires higher VDD minimum; unsuitable for 2.7V battery-backed or low-power sleep modes | Select when system operates strictly within 3.0–3.6V and demands faster read latency |
| MX29LV400CTTI-70G | Same 4 Mbit x16 density, 70 ns access, 2.7–3.6V; different command set and CFI structure | Requires firmware adaptation for erase/write commands; no native SDP compatibility | Choose only if existing design already uses Macronix-compatible drivers and layout accommodates minor timing variations |
Compared with SST39LF400A-55-4C-EKE, the SST39VF400A-70-4C-EKE trades 15 ns read speed for wider 2.7V operational margin and industrial temp support; versus MX29LV400CTTI-70G, it offers drop-in JEDEC command compatibility and integrated software data protection without driver modification.
Availability
SST39VF400A-70-4C-EKE is available at Aetrix Electronics and suitable for industrial automation, automotive ECU, medical instrumentation, and networking equipment requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for SST39VF400A-70-4C-EKE 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 provider of microcontrollers, analog, FPGA, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its nonvolatile memory portfolio.
The SST39VF series belongs to Microchip's legacy parallel flash product line, designed specifically for cost-sensitive, high-reliability embedded systems needing field-upgradable firmware storage with minimal external components.
FAQ
What is the exact memory organization of the SST39VF400A-70-4C-EKE?
The SST39VF400A-70-4C-EKE is organized as 256K words × 16 bits, totaling 4 Mbit (512 KB) of storage. Address lines A0–A16 cover the full 256K word space, with A17 used in command decoding per JEDEC standard. This matches the device ID 2780H confirmed in Table 2 of the datasheet.
Does the SST39VF400A-70-4C-EKE support both sector and block erase modes?
Yes, the SST39VF400A-70-4C-EKE supports uniform 2 KWord (4 KB) sector erase and 32 KWord (64 KB) block erase, as verified in Tables 7 and 8. Sector erase enables precise firmware patching, while block erase accelerates full image updates - both initiated via JEDEC-standard six-byte command sequences.
What write protection mechanisms does the SST39VF400A-70-4C-EKE implement?
The SST39VF400A-70-4C-EKE implements hardware protection (VDD power-up/down detection, <5 ns glitch rejection) and software data protection (SDP) requiring mandatory three-byte unlock for programming and six-byte unlock for erasing. These are active by default and documented in Section "Data Protection" of DS25001A.
Is the SST39VF400A-70-4C-EKE compatible with standard JEDEC x16 flash controllers?
Yes, the SST39VF400A-70-4C-EKE conforms to JEDEC standard pinouts and command sets for x16 memories, including Read, Word-Program, Sector/Block/Chip-Erase, and CFI Query. Its timing parameters (e.g., 70 ns tACC, 14 µs tWP) align with JEDEC MO-142AC specifications for TSOP-48 packages.
What package type is used for the SST39VF400A-70-4C-EKE?
The SST39VF400A-70-4C-EKE uses a 48-lead TSOP (Thin Small Outline Package) measuring 12 mm × 20 mm, as specified in Figure 2 and "Packages Available" section of DS25001A. The suffix "EKE" denotes this TSOP-48 industrial-grade variant with lead-free (RoHS) finish.
SST39VF400A-70-4C-EKE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
SST39VF400A-70-4C-EKE FAQ
1.How can I place an order for SST39VF400A-70-4C-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF400A-70-4C-EKE 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-70-4C-EKE reliable?
The price and inventory of SST39VF400A-70-4C-EKE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF400A-70-4C-EKE is usually 5 days.
3.What payment methods are accepted for SST39VF400A-70-4C-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF400A-70-4C-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF400A-70-4C-EKE?
SST39VF400A-70-4C-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF400A-70-4C-EKE 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-70-4C-EKE?
For technical support, including SST39VF400A-70-4C-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF400A-70-4C-EKE requirements.
6.How does Aetrix verify that SST39VF400A-70-4C-EKE is sourced from the original manufacturer or authorized distributors?
All SST39VF400A-70-4C-EKE 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-70-4C-EKE meets industry standards.
7.What is the process for return or replacement of SST39VF400A-70-4C-EKE?
All SST39VF400A-70-4C-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF400A-70-4C-EKE, 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-70-4C-EKE part is unused and in its original packaging.
Return procedure for SST39VF400A-70-4C-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39VF400A-70-4C-EKE Tags
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