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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology SST39VF6402B-70-4I-EKE

Name: SST39VF6402B-70-4I-EKE
Brand: Microchip Technology
SKU: SST39VF6402B-70-4I-EKE
Price: 2.40 USD
Availability: InStock
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Part No.:: SST39VF6402B-70-4I-EKE

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 48-TFSOP (0.724", 18.40mm Width)

Datasheet:: SST39VF6402B-70-4I-EKE.pdf

Description:: IC FLASH 64MBIT PARALLEL 48TSOP

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Product details

Overview

SST39VF6402B-70-4I-EKE from Microchip is a 64 Mbit (4M × 16) Multi-Purpose Flash Plus (MPF+) memory IC designed for nonvolatile program, configuration, and data storage in embedded systems. It operates from a single 2.7–3.6 V supply, delivers 70 ns read access time, supports hardware top-block protection (32 KWord), and features sector/block/chip erase with erase-suspend/resume capability.

For engineers reviewing the SST39VF6402B-70-4I-EKE datasheet, SST39VF6402B-70-4I-EKE pinout, SST39VF6402B-70-4I-EKE application, or SST39VF6402B-70-4I-EKE equivalent, this page provides verified technical context, JEDEC-compliant x16 interface details, SuperFlash reliability metrics (100,000 cycles, >100 years retention), and real-world use cases in industrial firmware storage and boot code management.

Technical Context

The SST39VF6402B-70-4I-EKE implements Microchip's proprietary SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count. Its command set is JEDEC-standard compatible for x16 flash, supporting software data protection via three-byte (program) and six-byte (erase) sequences.

It integrates hardware block protection on the top 32 KWord (0x3F8000–0x3FFFFF), RST# for hardware reset to read mode, WP# for physical write inhibit, and dual status detection (DQ7 Data# Polling and DQ6/DQ2 Toggle Bits) for asynchronous operation completion. The device supports CFI Query mode and 256-bit Security ID (128-bit factory + 128-bit user).

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Organization	4M × 16 (64 Mbit); enables 16-bit parallel data bus interfacing with microcontrollers and SoCs.
Read Access Time	70 ns; ensures compatibility with high-speed 14 MHz+ bus timing without wait states.
Supply Voltage	2.7–3.6 V; single-supply operation simplifies power design versus dual-rail flash devices.
Endurance	100,000 program/erase cycles; supports frequent field firmware updates in industrial controllers.
Data Retention	>100 years; guarantees long-term integrity of boot code and calibration data without refresh.
Erase Granularity	Uniform 2 KWord sectors and 32 KWord blocks; allows fine-grained updates without full chip erase.
Write Protection	Hardware top-block protection (32 KWord); prevents accidental overwrite of critical boot firmware.
Security ID	256-bit (128-bit factory + 128-bit user); enables secure device authentication and anti-cloning.

Pinout & Package

Package: 48-ball TFBGA (8 mm × 10 mm) and 48-lead TSOP (12 mm × 20 mm); both RoHS-compliant, surface-mountable, and JEDEC-standard pinout compliant.

Pin/Terminal	Circuit Role	Design Meaning
A0–A21	Address Inputs	22-bit address bus (AMS = A21); A10–A0 used for command decoding; AMS–A11 selects sector, AMS–A15 selects block.
DQ0–DQ15	Data I/O	16-bit bidirectional data bus; latched internally during writes; tri-stated when CE# or OE# is high.
CE#	Chip Enable	Active-low chip select; device enters standby (3 µA) when high; required low for all operations.
OE#	Output Enable	Active-low output gate; controls data bus drive; high disables outputs (high-Z) during reads.
WE#	Write Enable	Active-low control for writes; latches address/data edges; initiates internal program/erase timing.
WP#	Write Protect	Active-low hardware lock for top 32 KWord block; grounded to prevent inadvertent erase/program.
RST#	Reset	Active-low hardware reset; forces return to read mode within TRP; required after power-up instability.
VDD / VSS	Power / Ground	Single 2.7–3.6 V supply; VSS pins provide low-impedance return path for I/O and core logic.
NC	No Connection	Unbonded pins (e.g., ball E1 in TFBGA, pin 3 in TSOP); must be left floating or tied to VSS per layout rules.

Key Features

Feature	Design Value
Erase-Suspend/Resume	Allows real-time read/program from non-suspended sectors during active erase - critical for multitasking firmware loaders.
Auto Low Power Mode	Reduces active read current from 9 mA to 3 µA after valid access - cuts dynamic power by >99% in burst-read applications.
SuperFlash Fixed Timing	Word-program (7 µs), sector/block-erase (18 ms), chip-erase (40 ms) remain constant over lifetime - eliminates software de-rating.
JEDEC Command Compatibility	Supports standard x16 flash command sequences (e.g., 555H/AAH, 2AAH/55H) - enables drop-in replacement in legacy designs.
Security ID Lock-Out	User segment can be permanently locked after programming - prevents runtime corruption of authentication keys.
CFI Query Support	Provides standardized geometry, timing, and interface descriptors at known addresses - simplifies auto-detection in bootloader code.

Applications

Industrial PLC Firmware Storage	Embedded Boot Code Management
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile program memory holding executable firmware images; accessed via 16-bit parallel bus during cold/warm boot and field upgrade. Use Value: Top-block hardware protection prevents corruption of boot loader during OTA updates; 100-year retention ensures firmware integrity across equipment lifecycle.	Use Scenario: Hosting boot code and configuration parameters for ARM Cortex-M based edge gateways requiring secure startup and remote reconfiguration. IC Role / Device Role / Timing Role: Primary boot memory mapped into processor address space; initialized early in power-on reset sequence before RAM initialization. Use Value: 70 ns access time meets tight boot timing budgets; Security ID enables cryptographic verification of signed firmware images at boot.
Medical Device Calibration Data	Automotive Infotainment Configuration
Use Scenario: Storing sensor calibration coefficients and safety-critical operational limits in portable diagnostic equipment certified to IEC 62304. IC Role / Device Role / Timing Role: Persistent configuration memory accessed only during device initialization or service mode; write-protected except during calibration procedure. Use Value: Hardware WP# and software data protection prevent unauthorized modification; >100-year retention satisfies regulatory requirements for device longevity.	Use Scenario: Holding UI language packs, audio profiles, and vehicle-specific settings in automotive head units subject to extended thermal cycling (-40°C to +85°C). IC Role / Device Role / Timing Role: Secondary configuration memory interfaced via same 16-bit bus as main application flash; erased/reprogrammed during dealer software reflashes. Use Value: Industrial-grade temp range (-40°C to +85°C) and 100,000-cycle endurance support repeated dealership updates over 15-year vehicle life.

Industrial PLC Firmware Storage

Embedded Boot Code Management

Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments with wide temperature swings.

IC Role / Device Role / Timing Role: Nonvolatile program memory holding executable firmware images; accessed via 16-bit parallel bus during cold/warm boot and field upgrade.

Use Value: Top-block hardware protection prevents corruption of boot loader during OTA updates; 100-year retention ensures firmware integrity across equipment lifecycle.

Use Scenario: Hosting boot code and configuration parameters for ARM Cortex-M based edge gateways requiring secure startup and remote reconfiguration.

IC Role / Device Role / Timing Role: Primary boot memory mapped into processor address space; initialized early in power-on reset sequence before RAM initialization.

Use Value: 70 ns access time meets tight boot timing budgets; Security ID enables cryptographic verification of signed firmware images at boot.

Medical Device Calibration Data

Automotive Infotainment Configuration

Use Scenario: Storing sensor calibration coefficients and safety-critical operational limits in portable diagnostic equipment certified to IEC 62304.

IC Role / Device Role / Timing Role: Persistent configuration memory accessed only during device initialization or service mode; write-protected except during calibration procedure.

Use Value: Hardware WP# and software data protection prevent unauthorized modification; >100-year retention satisfies regulatory requirements for device longevity.

Use Scenario: Holding UI language packs, audio profiles, and vehicle-specific settings in automotive head units subject to extended thermal cycling (-40°C to +85°C).

IC Role / Device Role / Timing Role: Secondary configuration memory interfaced via same 16-bit bus as main application flash; erased/reprogrammed during dealer software reflashes.

Use Value: Industrial-grade temp range (-40°C to +85°C) and 100,000-cycle endurance support repeated dealership updates over 15-year vehicle life.

Equivalent & Alternatives

The following parts are listed as comparable options for similar flash memory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SST38VF6402-70-4I-EKE	Newer generation; identical 64 Mbit x16 organization, 70 ns access, but uses enhanced SuperFlash with lower program current (5 mA vs. 9 mA active read) and improved ESD robustness.	Pin-compatible and functionally identical; supports same command set and CFI structure; recommended for new designs per Microchip.	Select SST38VF6402-70-4I-EKE for new projects requiring longer product lifecycle support and marginally lower power consumption.
MX29LV640ETTI-70G	64 Mbit x16, 70 ns, 2.7–3.6 V; supports common flash interface (CFI) but lacks Security ID and erase-suspend; endurance rated at 100,000 cycles, retention 20 years.	No hardware top-block protection or Security ID; requires external logic for boot protection; not suitable for secure boot or long-life medical applications.	Consider MX29LV640ETTI-70G only if Security ID and >20-year retention are unnecessary and cost is primary constraint.

Compared with SST39VF6402B-70-4I-EKE, SST38VF6402-70-4I-EKE offers identical functionality with extended manufacturer support and better power efficiency, while MX29LV640ETTI-70G sacrifices security and longevity for legacy compatibility and lower unit cost.

Availability

SST39VF6402B-70-4I-EKE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, embedded boot code management, and medical device calibration data requiring stable component supply and long-term obsolescence planning.

Supply support for SST39VF6402B-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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with emphasis on reliability, longevity, and industrial-grade performance.

The SST39VF6402B-70-4I-EKE belongs to Microchip's Multi-Purpose Flash Plus (MPF+) family, engineered for high-reliability embedded firmware and configuration storage where data integrity, long retention, and field-upgrade capability are critical.

FAQ

What is the memory organization and bus width of the SST39VF6402B-70-4I-EKE?

The SST39VF6402B-70-4I-EKE is organized as 4M × 16, delivering 64 Mbit total capacity with a 16-bit parallel data bus (DQ0–DQ15). This configuration supports direct interfacing with 16-bit microcontroller external memory buses and enables efficient burst reads of instruction words or configuration data without byte-lane multiplexing.

Does the SST39VF6402B-70-4I-EKE support hardware write protection, and how is it configured?

Yes, the SST39VF6402B-70-4I-EKE supports hardware top-block protection for the upper 32 KWord (0x3F8000–0x3FFFFF). Protection is activated by grounding the WP# pin; when WP# is low, program and erase operations to that region are blocked. If WP# is left floating, an internal pull-up holds it high, leaving the block unprotected.

What are the supported erase capabilities of the SST39VF6402B-70-4I-EKE?

The SST39VF6402B-70-4I-EKE supports three erase modes: sector-erase (2 KWord uniform sectors), block-erase (32 KWord uniform blocks), and chip-erase (full array). All erase operations use JEDEC-standard six-byte command sequences and support erase-suspend/resume, allowing concurrent read/program operations outside the suspended region.

How does the SST39VF6402B-70-4I-EKE indicate completion of program or erase operations?

The SST39VF6402B-70-4I-EKE provides two hardware-supported status detection methods: Data# Polling (DQ7 toggles until completion, then returns true data) and Toggle Bits (DQ6 toggles during operation, stops when complete). Both are accessible via standard read cycles and require no additional hardware - essential for interrupt-driven or polling-based firmware drivers.

Is the SST39VF6402B-70-4I-EKE suitable for industrial temperature applications?

Yes, the SST39VF6402B-70-4I-EKE is rated for the industrial temperature range of –40°C to +85°C and specified for reliable operation across that range. Its 2.7–3.6 V supply tolerance, 100,000-cycle endurance, and >100-year data retention make it appropriate for deployment in industrial automation, energy metering, and transportation control systems.

What security features does the SST39VF6402B-70-4I-EKE include beyond basic write protection?

Beyond WP# hardware lock, the SST39VF6402B-70-4I-EKE includes a 256-bit Security ID (128-bit factory-programmed + 128-bit user-programmable), programmable via dedicated commands and lockable to prevent overwrite. It also implements JEDEC-standard Software Data Protection with three-byte (program) and six-byte (erase) command sequences to prevent spurious writes during power transitions.

SST39VF6402B-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

SST39VF6402B-70-4I-EKE FAQ

1.How can I place an order for SST39VF6402B-70-4I-EKE through Aetrix?

Please submit a Request for Quotation (RFQ) for SST39VF6402B-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 SST39VF6402B-70-4I-EKE reliable?

The price and inventory of SST39VF6402B-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 SST39VF6402B-70-4I-EKE is usually 5 days.

3.What payment methods are accepted for SST39VF6402B-70-4I-EKE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6402B-70-4I-EKE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SST39VF6402B-70-4I-EKE?

SST39VF6402B-70-4I-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SST39VF6402B-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 SST39VF6402B-70-4I-EKE?

For technical support, including SST39VF6402B-70-4I-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF6402B-70-4I-EKE requirements.

6.How does Aetrix verify that SST39VF6402B-70-4I-EKE is sourced from the original manufacturer or authorized distributors?

All SST39VF6402B-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 SST39VF6402B-70-4I-EKE meets industry standards.

7.What is the process for return or replacement of SST39VF6402B-70-4I-EKE?

All SST39VF6402B-70-4I-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6402B-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 SST39VF6402B-70-4I-EKE part is unused and in its original packaging.

Return procedure for SST39VF6402B-70-4I-EKE:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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