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Microchip Technology SST39VF401C-70-4C-EKE
- Part No.:
- SST39VF401C-70-4C-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF401C-70-4C-EKE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,280
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Product details
Overview
SST39VF401C-70-4C-EKE from Microchip is a 4 Mbit (256K × 16) CMOS Multi-Purpose Flash Plus memory IC with SuperFlash® technology, operating at 2.7–3.6 V, delivering 70 ns read access time and supporting sector/block/chip erase. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring field-upgradable firmware.
For engineers reviewing the SST39VF401C-70-4C-EKE datasheet, SST39VF401C-70-4C-EKE pinout, SST39VF401C-70-4C-EKE application, or SST39VF401C-70-4C-EKE equivalent, key selection considerations include boot-block protection architecture (bottom 8 KWord), hardware write-protection via WP#, RY/BY# status signaling, and JEDEC-standard x16 parallel interface compatibility.
Technical Context
This device implements a split-gate SuperFlash® cell architecture enabling fixed erase/program timing independent of cycle count, eliminating system-level de-rating. It supports three software-controlled erase granularities-uniform 2 KWord sectors, flexible block sizes (one 8-, two 4-, one 16-, seven 32-KWord blocks), and full-chip erase-with internal VPP generation and no external high-voltage supply required.
Operation relies on standard microprocessor bus control (CE#, OE#, WE#), latched address/data, and dual status detection: Data# Polling (DQ7) and Toggle Bits (DQ6/DQ2), plus open-drain RY/BY# for hardware-ready signaling. The SST39VF401C variant features bottom-boot block protection (00000H–01FFFH), distinguishing it from top-boot SST39VF402C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16 organization), providing 512 KB of x16 data storage |
| Read Access Time | 70 ns maximum - enables direct interfacing with 14 MHz microcontrollers without wait states |
| Supply Voltage | 2.7–3.6 V - supports single-supply operation in battery-powered or low-voltage embedded systems |
| Endurance | 100,000 program/erase cycles - ensures reliable firmware updates over product lifetime |
| Data Retention | Greater than 100 years - guarantees long-term data integrity without refresh |
| Active Current | 5 mA typical at 5 MHz - minimizes power draw during active read operations |
| Standby Current | 3 µA typical - enables ultra-low-power sleep modes in portable devices |
| Erase Time | 18 ms typical for sector/block, 40 ms for chip - enables rapid field reprogramming |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, JEDEC-standard x16 parallel interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K-word addressing; AMS = A17 for block/sector selection |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with internal latching; tri-stated when CE# or OE# is high |
| CE# | Chip Enable | Active-low chip select; device enters standby when high, enabling multi-device bus sharing |
| OE# | Output Enable | Active-low output gate; controls data bus drive without affecting internal state |
| WE# | Write Enable | Active-low write strobe; latches address/data and initiates command sequences |
| WP# | Hardware Write Protect | Active-low protection for bottom 8 KWord boot block (00000H–01FFFH) - prevents accidental firmware overwrite |
| RST# | Hardware Reset | Active-low reset input; forces return to read mode and aborts in-progress erase/program |
| RY/BY# | Ready/Busy# | Open-drain status output; pulled low during erase/program, requires external 10–100 kΩ pull-up |
| VDD | Power Supply | 2.7–3.6 V supply; powers all internal logic and SuperFlash® programming circuitry |
| VSS | Ground | Reference ground for all signals and internal charge pumps |
| NC | No Connection | Unbonded pins (e.g., A13, A9 in TSOP); must be left floating or tied to VSS per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell with thick-oxide tunneling injector enables fixed 7 µs word-program and 18 ms erase times across full endurance life |
| Bottom Boot Block Protection | Hardware-enforced protection of lowest 8 KWord (00000H–01FFFH) - safeguards bootloader code from corruption |
| Erase-Suspend/Resume | Allows temporary suspension of sector/block erase to read or program other regions - critical for real-time firmware update scenarios |
| Security ID Space | Factory-programmed 128-bit ID + 128-word user-programmable space - supports device authentication and secure provisioning |
| CFI Compliance | Integrated Common Flash Interface enables automatic driver detection and configuration in OS/bootloader environments |
| Auto Low Power Mode | Reduces active read current from 5 mA to 3 µA after valid access - cuts dynamic power by >99% during idle polling |
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. IC Role / Device Role / Timing Role: Nonvolatile x16 parallel flash memory serving as primary firmware storage with hardware boot-block protection. Use Value: Bottom 8 KWord protection prevents accidental overwrite of startup routines during field firmware upgrades via RS-485 or CAN. | Use Scenario: Holding bootloader code and calibration data in engine control units subject to wide temperature and voltage variation. IC Role / Device Role / Timing Role: JEDEC-compliant flash memory interfaced directly to MCU's external memory bus for secure boot execution. Use Value: 2.7–3.6 V operation and 100-year data retention ensure reliability across automotive lifecycle requirements (-40°C to +125°C). |
| Medical Device Configuration Storage | Networking Equipment Image Backup |
Use Scenario: Retaining device-specific calibration coefficients, safety thresholds, and user preferences in portable diagnostic equipment. IC Role / Device Role / Timing Role: Field-upgradable nonvolatile memory accessed via microcontroller GPIO-bus emulation for regulatory-compliant data persistence. Use Value: Erase-suspend capability allows concurrent reading of stored parameters while background firmware validation occurs. | Use Scenario: Storing redundant firmware images and configuration snapshots in managed Ethernet switches and routers. IC Role / Device Role / Timing Role: Dual-image flash memory supporting A/B firmware partitioning with hardware write protection on primary boot sector. Use Value: 70 ns read access enables zero-wait-state execution from flash, reducing BOM cost versus SRAM+ROM combinations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF402C-70-4C-EKE | Top-boot block protection (3E000H–3FFFFH) instead of bottom-boot; identical timing, voltage, and command set | Used where bootloader resides in highest memory region rather than lowest | Select when system architecture requires protected top-sector firmware storage |
| MX29LV400CTTI-70G | 4 Mbit x16, 70 ns, 3.0–3.6 V only; lacks Auto Low Power mode and Security ID; different command set (non-JEDEC) | Requires modified driver support; no hardware boot-block flexibility | Choose only if legacy design mandates Macronix pinout and timing compatibility |
Compared with SST39VF402C-70-4C-EKE, the SST39VF401C-70-4C-EKE provides bottom-boot protection essential for traditional bootloader placement, while MX29LV400CTTI-70G offers lower cost but sacrifices security features, power optimization, and JEDEC interoperability.
Availability
SST39VF401C-70-4C-EKE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU bootloader memory, and medical device configuration storage requiring stable component supply across extended production lifecycles.
Supply support for SST39VF401C-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 Inc. is a leading provider of microcontroller, analog, FPGA, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its serial and parallel flash portfolio.
The SST39VFxxxC family delivers high-reliability, low-voltage parallel flash memory optimized for embedded systems requiring field-upgradable firmware, secure boot, and long-term data retention without refresh.
FAQ
What is the boot block configuration of SST39VF401C-70-4C-EKE?
The SST39VF401C-70-4C-EKE implements bottom-boot block protection covering the lowest 8 KWord address range (00000H–01FFFH). This hardware protection is activated when WP# is driven low, preventing accidental erase or program operations on the bootloader region. Unlike the SST39VF402C variant, which protects the top 8 KWord, the SST39VF401C-70-4C-EKE is specifically designed for systems where critical startup code resides at the base of memory space.
Does SST39VF401C-70-4C-EKE support both hardware and software write protection?
Yes, SST39VF401C-70-4C-EKE provides dual-layer protection: hardware block protection via the WP# pin (enabling/disabling bottom-boot block writes), and JEDEC-standard Software Data Protection requiring validated six-byte command sequences for erase and three-byte sequences for program operations. Both mechanisms operate independently - WP# low disables all writes to the protected block regardless of software commands, while SDP prevents unintended writes during power transitions or noise events.
What status signaling methods does SST39VF401C-70-4C-EKE provide during erase/program operations?
SST39VF401C-70-4C-EKE offers three concurrent status detection methods: Ready/Busy# (RY/BY#) open-drain output, Data# Polling (DQ7 toggling/complement behavior), and Toggle Bits (DQ6 and DQ2). RY/BY# provides hardware-level ready indication requiring an external pull-up resistor; DQ7 and DQ6 enable software polling without additional pins. All three are valid after the rising edge of the final WE# pulse in the command sequence, ensuring deterministic timing for host controller synchronization.
Can SST39VF401C-70-4C-EKE be used in systems with 3.3 V-only supply rails?
Yes, SST39VF401C-70-4C-EKE operates fully within a 2.7–3.6 V range, making it compatible with standard 3.3 V ±10% supply rails (2.97–3.63 V). Its guaranteed 70 ns read access time and 5 mA active current are specified across this entire voltage range, eliminating need for level shifters or auxiliary regulators in 3.3 V embedded designs. Note that SST39LF401C variants require minimum 3.0 V and offer faster 55 ns access, but SST39VF401C-70-4C-EKE maintains broader voltage tolerance.
What package type is used in SST39VF401C-70-4C-EKE?
SST39VF401C-70-4C-EKE is supplied in a 48-lead TSOP (Thin Small Outline Package) with 12 mm × 20 mm body dimensions and standard JEDEC MO-141AC footprint. This surface-mount package features gull-wing leads, RoHS compliance, and is optimized for automated PCB assembly. Pin assignments match JEDEC-standard x16 parallel flash layouts, enabling drop-in replacement in existing designs using compatible TSOP-48 footprints.
SST39VF401C-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:
- 10µs
- 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
SST39VF401C-70-4C-EKE FAQ
1.How can I place an order for SST39VF401C-70-4C-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF401C-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 SST39VF401C-70-4C-EKE reliable?
The price and inventory of SST39VF401C-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 SST39VF401C-70-4C-EKE is usually 5 days.
3.What payment methods are accepted for SST39VF401C-70-4C-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF401C-70-4C-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF401C-70-4C-EKE?
SST39VF401C-70-4C-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF401C-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 SST39VF401C-70-4C-EKE?
For technical support, including SST39VF401C-70-4C-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF401C-70-4C-EKE requirements.
6.How does Aetrix verify that SST39VF401C-70-4C-EKE is sourced from the original manufacturer or authorized distributors?
All SST39VF401C-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 SST39VF401C-70-4C-EKE meets industry standards.
7.What is the process for return or replacement of SST39VF401C-70-4C-EKE?
All SST39VF401C-70-4C-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF401C-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 SST39VF401C-70-4C-EKE part is unused and in its original packaging.
Return procedure for SST39VF401C-70-4C-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39VF401C-70-4C-EKE Tags
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