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Microchip Technology SST39VF6401B-70-4I-EKE
- Part No.:
- SST39VF6401B-70-4I-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF6401B-70-4I-EKE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,558
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Product details
Overview
SST39VF6401B-70-4I-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 delivers 100,000 program/erase cycles endurance and >100 years data retention, used in embedded firmware storage for industrial controllers and legacy communication modules.
For engineers reviewing the SST39VF6401B-70-4I-EKE datasheet, SST39VF6401B-70-4I-EKE pinout, SST39VF6401B-70-4I-EKE application, or SST39VF6401B-70-4I-EKE equivalent, key selection considerations include bottom-boot block protection (000000H–007FFFH), JEDEC x16 pin compatibility, sector/block/chip erase timing (18 ms / 18 ms / 40 ms), and Auto Low Power mode (3 µA standby).
Technical Context
The SST39VF6401B-70-4I-EKE implements SuperFlash split-gate cell technology with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its command-set architecture supports JEDEC-standard software data protection and CFI query mode for device identification.
It features dual status detection (DQ7 Data# Polling and DQ6/DQ2 Toggle Bits), hardware reset (RST#), and WP#-controlled bottom 32 KWord block protection. The device operates in Read, Word-Program, Sector-Erase, Block-Erase, Chip-Erase, Erase-Suspend/Resume, and Security ID programming modes via six-byte command sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization); supports 22-bit addressing (A0–A21) |
| Read Access Time | 70 ns max; enables direct execution from flash in 16-bit bus microcontroller systems |
| Supply Voltage | 2.7–3.6 V single supply; eliminates need for separate VPP generator |
| Endurance | 100,000 program/erase cycles typical; validated for field-updatable firmware in industrial equipment |
| Data Retention | >100 years at 25°C; suitable for long-lifecycle embedded deployments without refresh |
| Erase Times | Sector: 18 ms, Block: 18 ms, Chip: 40 ms typical; deterministic timing simplifies system timeout design |
| Power Consumption | Active: 9 mA @ 5 MHz; Standby/Auto Low Power: 3 µA; reduces thermal load in sealed enclosures |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm, standard pinout, die-up orientation). Pin functions conform to JEDEC x16 flash standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | A0–A10 used for sector address (AMS–A11); A0–A14 for block address (AMS–A15); AMS = A21 |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional bus; latched internally during writes; tri-stated when CE# or OE# high |
| CE# | Chip Enable | Active-low chip select; must be low to enable read/write operations |
| OE# | Output Enable | Active-low output gate; controls data bus drive during read cycles only |
| WE# | Write Enable | Active-low control for write cycles; latches address/data on falling/rising edges per JEDEC timing |
| WP# | Write Protect | Active-low hardware lock for bottom 32 KWord boot block (000000H–007FFFH) |
| RST# | Hardware Reset | Active-low hard reset; terminates ongoing erase/program and forces return to read mode |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; RoHS-compliant; no VPP pin required |
Key Features
| Feature | Design Value |
|---|---|
| Bottom Block Protection | Hardware-enforced lock on bottom 32 KWord (000000H–007FFFH) via WP# pin - prevents accidental bootloader corruption |
| Erase-Suspend/Resume | Allows temporary interruption of sector/block erase to read or program other regions - enables real-time firmware updates |
| Security ID Space | 256-bit factory + user programmable ID (128 + 128 bits); locked after programming - supports secure device authentication |
| Auto Low Power Mode | Automatically enters 3 µA standby after valid read access - cuts active current by >99% without software intervention |
| CFI Query Support | JEDEC-standard Common Flash Interface accessible via 555H/AAH/2AAH/55H/98H sequence - enables runtime device parameter discovery |
Applications
| Industrial PLC Firmware Storage | Legacy Telecom Baseband Module |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in DIN-rail mounted programmable logic controllers operating in -40°C to +85°C environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware-protected boot sector ensuring bootloader integrity during field upgrades. Use Value: Bottom-block protection prevents overwrite of critical startup code; 70 ns access enables zero-wait-state execution on 16-bit microcontrollers. |
Use Scenario: Holding DSP configuration tables and protocol stacks in E1/T1 line interface cards deployed in telecom central offices. IC Role / Device Role / Timing Role: JEDEC x16-compatible flash memory interfacing directly to TI C54x or ADSP-21xx processors via parallel bus. Use Value: Sector-erase capability allows selective reprogramming of individual protocol parameters without full chip erase; 100K-cycle endurance supports frequent field calibration updates. |
| Medical Diagnostic Equipment Bootloader | Automotive Body Control Module (Legacy) |
Use Scenario: Secure boot image storage in FDA-cleared ultrasound imaging systems requiring tamper-resistant firmware validation. IC Role / Device Role / Timing Role: Primary boot memory with programmable Security ID space used for cryptographic signature verification at power-on. Use Value: Factory-programmed 128-bit ID enables hardware-rooted trust chain; >100-year data retention meets medical device shelf-life requirements. |
Use Scenario: Storing vehicle-specific calibration maps and CAN message routing logic in pre-2010 BCMs using 8051-based architectures. IC Role / Device Role / Timing Role: Parallel-interface flash memory mapped into 16-bit external memory space of legacy automotive MCUs. Use Value: Block-erase (18 ms) and word-program (7 µs) performance enables fast dealer-level recalibration; WP# pin ties directly to chassis ground for permanent boot protection. |
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-70-4I-EKE | Top 32 KWord block protection instead of bottom; identical timing, voltage, and command set | Used where bootloader resides in upper memory region (3F8000H–3FFFFFH) | Select only if top-boot architecture matches system memory map and layout |
| SST38VF6401-70-4I-EKE | Newer generation; same density and pinout but enhanced reliability, lower power (2 µA standby), and extended temperature range (-40°C to +105°C) | Recommended for new designs per Microchip; supports longer lifecycle and higher ambient operation | Preferred replacement where board redesign is feasible; not drop-in due to minor timing and CFI differences |
Compared with SST39VF6401B-70-4I-EKE, SST39VF6402B-70-4I-EKE offers mirrored block protection but identical electrical behavior, while SST38VF6401-70-4I-EKE provides measurable improvements in standby current, temperature rating, and longevity - making it the strategic upgrade path despite requiring validation.
Availability
SST39VF6401B-70-4I-EKE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy telecom baseband modules, medical diagnostic bootloader storage, and automotive body control module applications requiring stable component supply across extended product lifecycles.
Supply support for SST39VF6401B-70-4I-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, with broad expertise in embedded control and nonvolatile storage technologies.
The SST39VF6401B-70-4I-EKE belongs to Microchip's Multi-Purpose Flash Plus (MPF+) family, designed specifically for cost-sensitive, high-reliability embedded systems requiring robust firmware storage with hardware-based data protection and JEDEC interoperability.
FAQ
What does the "B" suffix in SST39VF6401B-70-4I-EKE indicate?
The "B" in SST39VF6401B-70-4I-EKE denotes the second revision of the SST39VF6401 product family, incorporating refined SuperFlash process enhancements for improved endurance consistency and tighter parametric tolerances over the original "A" version. All functional specifications, pinout, and command set remain fully compatible with earlier revisions.
Is SST39VF6401B-70-4I-EKE pin-compatible with SST39VF6402B-70-4I-EKE?
Yes, SST39VF6401B-70-4I-EKE is pin-compatible with SST39VF6402B-70-4I-EKE - both share identical 48-lead TSOP packaging, JEDEC x16 pin assignments, and electrical timing. The sole functional difference is hardware block protection location: SST39VF6401B-70-4I-EKE protects the bottom 32 KWord, while SST39VF6402B-70-4I-EKE protects the top 32 KWord.
How does the Auto Low Power mode function in SST39VF6401B-70-4I-EKE?
In SST39VF6401B-70-4I-EKE, Auto Low Power mode activates automatically after a valid read cycle completes, reducing active current from 9 mA to 3 µA without software intervention. It exits instantly on any address or control signal transition, with no access time penalty. This feature is especially valuable in battery-backed or thermally constrained systems where idle power must be minimized.
Can SST39VF6401B-70-4I-EKE be used in place of SST38VF6401-70-4I-EKE?
No - although SST39VF6401B-70-4I-EKE and SST38VF6401-70-4I-EKE share the same density, package, and basic command structure, Microchip explicitly positions SST38VF6401 as a next-generation replacement with revised timing parameters, enhanced CFI support, and different internal state machine behavior. SST39VF6401B-70-4I-EKE is not a drop-in substitute for SST38VF6401-70-4I-EKE without full system validation.
What is the purpose of the Security ID feature in SST39VF6401B-70-4I-EKE?
The Security ID in SST39VF6401B-70-4I-EKE provides a 256-bit space - 128 bits factory-programmed by Microchip and 128 bits user-programmable - for device authentication and firmware binding. Once the user segment is locked via the Security ID Program Lock-Out command, it becomes permanently immutable, enabling secure boot verification and anti-cloning measures in regulated applications.
SST39VF6401B-70-4I-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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
SST39VF6401B-70-4I-EKE FAQ
1.How can I place an order for SST39VF6401B-70-4I-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF6401B-70-4I-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-70-4I-EKE reliable?
The price and inventory of SST39VF6401B-70-4I-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-70-4I-EKE is usually 5 days.
3.What payment methods are accepted for SST39VF6401B-70-4I-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6401B-70-4I-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF6401B-70-4I-EKE?
SST39VF6401B-70-4I-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF6401B-70-4I-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-70-4I-EKE?
For technical support, including SST39VF6401B-70-4I-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF6401B-70-4I-EKE requirements.
6.How does Aetrix verify that SST39VF6401B-70-4I-EKE is sourced from the original manufacturer or authorized distributors?
All SST39VF6401B-70-4I-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-70-4I-EKE meets industry standards.
7.What is the process for return or replacement of SST39VF6401B-70-4I-EKE?
All SST39VF6401B-70-4I-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6401B-70-4I-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-70-4I-EKE part is unused and in its original packaging.
Return procedure for SST39VF6401B-70-4I-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39VF6401B-70-4I-EKE Tags
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