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Microchip Technology SST39VF6401B-70-4C-EKE
- Part No.:
- SST39VF6401B-70-4C-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF6401B-70-4C-EKE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:133
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Product details
Overview
SST39VF6401B-70-4C-EKE from Microchip is a 64 Mbit (4M × 16) CMOS Multi-Purpose Flash Plus (MPF+) memory IC with bottom-block hardware write protection, 70 ns read access time, and single 2.7–3.6 V supply operation. It supports sector/block/chip erase, erase-suspend/resume, and Security ID functionality, and is used in embedded firmware storage for industrial controllers and legacy communication modules.
For engineers reviewing the SST39VF6401B-70-4C-EKE datasheet, SST39VF6401B-70-4C-EKE pinout, SST39VF6401B-70-4C-EKE application, or SST39VF6401B-70-4C-EKE equivalent, key selection considerations include bottom-boot block protection (000000H–007FFFH), JEDEC x16 pin compatibility, 100,000-cycle endurance, and TSOP-48/TFFBGA-48 package options.
Technical Context
The SST39VF6401B-70-4C-EKE implements SuperFlash split-gate cell technology with thick-oxide tunneling injection, enabling fixed erase/program times independent of cycle count. Its command interface uses standard JEDEC-compatible six-byte sequences for sector/block/chip erase and three-byte sequences for word-program.
Hardware data protection includes WP#-controlled bottom 32 KWord boot block lock, RST#-driven hardware reset, and noise/glitch immunity on WE#/CE#. Status detection relies on DQ6 toggle bit and DQ7 data# polling, both validated after sixth WE# pulse for erase operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization); supports 2.7–3.6 V single-supply operation without external VPP. |
| Read Access Time | 70 ns max; enables direct execution (XIP) from flash in microcontroller-based systems with ≤14 MHz bus timing. |
| Endurance & Retention | 100,000 program/erase cycles typical; >100 years data retention - suitable for field-upgradable firmware with infrequent updates. |
| Erase Architecture | Uniform 2 KWord sectors (2048 total) and 32 KWord blocks (128 total); bottom 32 KWord block protected when WP# = low. |
| Power Consumption | 9 mA active current (5 MHz), 3 µA standby/auto-low-power mode - reduces system-level quiescent power in always-on edge devices. |
| Security Features | 256-bit Security ID (128-bit factory + 128-bit user programmable); locked via dedicated command to prevent overwrite. |
| Interface Standard | JEDEC-standard x16 asynchronous parallel interface; compatible with legacy 16-bit microprocessor buses and FPGA memory controllers. |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm, type I, standard pinout). Pin functions conform to JEDEC MO-142AC and are validated per DS20005008C Figures 2 and Table 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | A0–A10 used for byte/word addressing; AMS = A21 selects top/bottom block during erase; A11–A15 define sector/block boundaries. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional latched bus; tri-stated when CE# or OE# high; DQ6/DQ7 provide toggle/data# polling status during writes. |
| WE#, CE#, OE# | Control Inputs | Standard asynchronous SRAM-like control: CE# enables chip, OE# gates output, WE# initiates write; all require <5 ns glitch immunity. |
| WP# | Hardware Protect | Active-low input that locks bottom 32 KWord (000000H–007FFFH) against program/erase when grounded - critical for bootloader integrity. |
| RST# | Hardware Reset | Asynchronous active-low reset; terminates ongoing erase/program and forces return to read mode within TRP (min 100 ns). |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; VSS pins at positions 23, 46 ensure low-impedance ground return for noise-sensitive parallel bus operation. |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows real-time read access to non-suspended sectors during active erase - enables background firmware validation in safety-critical systems. |
| Auto Low Power Mode | Reduces active read current from 9 mA to 3 µA after valid read access - eliminates need for external power gating in battery-backed applications. |
| Common Flash Interface (CFI) | Provides standardized device geometry and timing parameters at known addresses (e.g., 1BH–26H) - simplifies auto-detection in generic flash drivers. |
| Software Data Protection | Three-byte unlock sequence required before word-program; six-byte sequence before erase - prevents accidental writes during power transients. |
| Bottom Boot Block Protection | Fixed 32 KWord region (000000H–007FFFH) secured by WP# pin - ensures bootloader code remains unaltered during application firmware updates. |
Applications
| Industrial PLC Firmware Storage | Legacy Telecom Line Card Boot Memory |
|---|---|
|
Use Scenario: Storing and updating firmware images for programmable logic controllers operating in harsh environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP capability; executes directly from address space 000000H–007FFFH (protected boot region). Use Value: Bottom-block protection prevents corruption of bootloader during field firmware upgrades; 100-year retention ensures long-term reliability without refresh. |
Use Scenario: Hosting boot code and configuration tables for TDM-based line interface cards in telecom central offices. IC Role / Device Role / Timing Role: Parallel x16 interface matches legacy DSP bus timing; 70 ns access satisfies 14 MHz clock domain requirements. Use Value: Sector-erase capability allows selective reprogramming of voice codec parameters without full chip erase - reducing update downtime. |
| Medical Device Configuration Memory | Automotive Body Control Module (Legacy) |
|
Use Scenario: Storing calibrated sensor offsets, user preferences, and regulatory compliance logs in Class II medical instruments. IC Role / Device Role / Timing Role: Secure ID space stores tamper-evident calibration signatures; WP#-locked boot region isolates critical startup routines. Use Value: Factory-programmed 128-bit ID enables traceability; user-programmable 128-bit segment stores audit trails - meeting IEC 62304 data integrity requirements. |
Use Scenario: Holding ECU firmware and lookup tables in pre-2010 automotive body control units with 16-bit microcontrollers. IC Role / Device Role / Timing Role: JEDEC-compliant pinout ensures drop-in replacement for earlier AMD/Spansion flash parts in existing PCB layouts. Use Value: Uniform 2 KWord sectors enable fine-grained updates of lighting control algorithms without disturbing HVAC calibration data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6402B-70-4C-EKE | Top 32 KWord block protection (3F8000H–3FFFFFH) instead of bottom; identical timing, density, and command set. | Used where bootloader resides in upper memory map; not interchangeable without firmware address remapping. | Select only if top-boot architecture aligns with system memory map and WP# routing supports top-block grounding. |
| SST38VF6401-70-4C-EKE | Newer generation with same 64 Mbit density but enhanced reliability (200K cycles), lower 2.3–3.6 V supply, and improved CFI support. | Recommended for new designs per Microchip; requires validation of voltage regulator and timing margin changes. | Preferred for new designs; verify compatibility with existing 2.7–3.6 V rails and check updated CFI query response format. |
Compared with SST39VF6402B-70-4C-EKE, the SST39VF6401B-70-4C-EKE provides bottom-boot protection essential for legacy systems with bootloader at address zero; versus SST38VF6401-70-4C-EKE, it lacks newer reliability specs and narrower voltage range but maintains full pin and command compatibility for drop-in replacement in mature designs.
Availability
SST39VF6401B-70-4C-EKE is available at Aetrix Electronics and suitable for industrial PLCs, legacy telecom line cards, medical instrument configuration storage, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for SST39VF6401B-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 microcontrollers, analog components, and memory solutions, with focus on embedded control and connectivity.
The SST39VF6401B-70-4C-EKE belongs to Microchip's legacy Multi-Purpose Flash Plus (MPF+) family, designed specifically for cost-sensitive, high-reliability parallel NOR flash applications in industrial and communications infrastructure.
FAQ
What is the boot block protection scheme for SST39VF6401B-70-4C-EKE?
The SST39VF6401B-70-4C-EKE implements bottom-block hardware protection: when WP# is held low, the lowest 32 KWord (000000H–007FFFH) is locked against program and erase operations. This region is intended for bootloader code storage. The SST39VF6401B-70-4C-EKE does not support top-block protection - that function is exclusive to the SST39VF6402B variant.
Does SST39VF6401B-70-4C-EKE support erase-suspend functionality?
Yes, the SST39VF6401B-70-4C-EKE supports Erase-Suspend and Erase-Resume commands (B0H and 30H respectively). This allows reading from or programming into non-suspended sectors while an erase operation is active. During suspend, DQ6 reads as "1" and DQ2 toggles when accessing suspended regions - a behavior confirmed in DS20005008C Table 2 and Figure 11.
What package options are available for SST39VF6401B-70-4C-EKE?
The SST39VF6401B-70-4C-EKE is offered in two RoHS-compliant packages: 48-lead TSOP (12 mm × 20 mm, standard pinout per Figure 2) and 48-ball TFBGA (8 mm × 10 mm, ball map per Figure 3). Both packages share identical electrical specifications and command set; the EKE suffix denotes the TSOP-48 variant per Microchip's ordering nomenclature.
How is the Security ID implemented in SST39VF6401B-70-4C-EKE?
The SST39VF6401B-70-4C-EKE contains a 256-bit Security ID space: 128 bits factory-programmed by Microchip and 128 bits user-programmable. User segments are written using the Security ID Word-Program command (A5H), and locked permanently with the User Sec ID Program Lock-Out command (85H). Neither segment can be erased, and lock status is verified via DQ3 read at address 0000FFH.
Is SST39VF6401B-70-4C-EKE compatible with JEDEC-standard x16 flash interfaces?
Yes, the SST39VF6401B-70-4C-EKE conforms fully to JEDEC standard pin assignments and software command sequence compatibility for x16 memories. It supports standard read/write/erase timing, CFI query (98H), and product ID entry (90H), enabling interoperability with generic flash controllers and BIOS implementations designed for parallel NOR flash.
SST39VF6401B-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:
- 64Mbit
- Memory Organization:
- 4M 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
SST39VF6401B-70-4C-EKE FAQ
1.How can I place an order for SST39VF6401B-70-4C-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF6401B-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 SST39VF6401B-70-4C-EKE reliable?
The price and inventory of SST39VF6401B-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 SST39VF6401B-70-4C-EKE is usually 5 days.
3.What payment methods are accepted for SST39VF6401B-70-4C-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6401B-70-4C-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF6401B-70-4C-EKE?
SST39VF6401B-70-4C-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF6401B-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 SST39VF6401B-70-4C-EKE?
For technical support, including SST39VF6401B-70-4C-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF6401B-70-4C-EKE requirements.
6.How does Aetrix verify that SST39VF6401B-70-4C-EKE is sourced from the original manufacturer or authorized distributors?
All SST39VF6401B-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 SST39VF6401B-70-4C-EKE meets industry standards.
7.What is the process for return or replacement of SST39VF6401B-70-4C-EKE?
All SST39VF6401B-70-4C-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6401B-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 SST39VF6401B-70-4C-EKE part is unused and in its original packaging.
Return procedure for SST39VF6401B-70-4C-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39VF6401B-70-4C-EKE Tags
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