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Microchip Technology SST39VF6402B-70-4C-EKE-T
- Part No.:
- SST39VF6402B-70-4C-EKE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF6402B-70-4C-EKE-T.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,722
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Product details
Overview
SST39VF6402B-70-4C-EKE-T from Microchip is a 64 Mbit (4M × 16) CMOS Multi-Purpose Flash Plus (MPF+) memory IC with top-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 control panels requiring field-upgradable code.
For engineers reviewing the SST39VF6402B-70-4C-EKE-T datasheet, SST39VF6402B-70-4C-EKE-T pinout, SST39VF6402B-70-4C-EKE-T application, or SST39VF6402B-70-4C-EKE-T equivalent, key selection considerations include top-boot block protection address range (3F8000H–3FFFFFH), TSOP-48 package compatibility, JEDEC x16 pinout compliance, and SuperFlash endurance (100,000 cycles).
Technical Context
This device implements SuperFlash technology with split-gate cells and thick-oxide tunneling injection, enabling fixed erase/program times independent of cycle count. Its command set is JEDEC-compliant and software-compatible with standard flash interfaces, supporting CFI query mode and Security ID read/write via dedicated three-byte entry sequences.
The SST39VF6402B-70-4C-EKE-T uses latched address/data architecture with CMOS I/O compatibility and dual status detection (DQ7 Data# Polling and DQ6/DQ2 Toggle Bits) for end-of-write verification. Hardware protection includes WP#-controlled top 32 KWord block lock and RST#-initiated hard reset to Read mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4M × 16 (64 Mbit); enables 16-bit parallel data bus interface without external multiplexing |
| Read Access Time | 70 ns; meets timing requirements for 14 MHz bus clock in legacy microcontroller systems |
| Supply Voltage | 2.7–3.6 V; compatible with 3.3 V logic rails and eliminates need for separate VPP programming voltage |
| Endurance | 100,000 program/erase cycles; supports frequent firmware updates in remote monitoring devices |
| Data Retention | >100 years; ensures long-term reliability in unattended industrial deployments |
| Erase Granularity | 2 KWord sectors / 32 KWord blocks; allows fine-grained firmware patching without full chip erase |
| Active Current | 9 mA typical at 5 MHz; reduces power budget impact in always-on edge nodes |
| Standby Current | 3 µA typical; enables ultra-low-power sleep states in battery-backed controllers |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, standard JEDEC x16 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | A0–A10 used for byte/word addressing; A11–A21 select sector/block during erase operations |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional bus; outputs tri-stated when CE# or OE# high; latched internally during writes |
| WE#, OE#, CE# | Control Inputs | Standard asynchronous SRAM-like control: WE# enables write, OE# gates output, CE# selects chip |
| WP# | Hardware Protect | Grounding locks top 32 KWord boot block (3F8000H–3FFFFFH); floating = internal pull-up = unprotected |
| RST# | Hardware Reset | Pulling low aborts ongoing erase/program and forces return to Read mode within TRP (≤100 ns) |
| VDD, VSS | Power/Ground | Single 2.7–3.6 V supply; no VPP required - simplifies PCB power design |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows real-time reading from non-suspended sectors during active erase - critical for fail-safe bootloader operation |
| Security ID Space | 256-bit total (128-bit factory + 128-bit user); enables secure device authentication and firmware binding |
| 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 scenarios |
| SuperFlash Fixed Timing | Word-program (7 µs), sector/block erase (18 ms), chip erase (40 ms) remain constant across lifetime - eliminates software de-rating |
| JEDEC x16 Pin Compatibility | Direct drop-in replacement for legacy x16 NOR flash in existing sockets - no layout change required |
Applications
| Firmware Storage in PLCs | Bootloader Memory in HMI Panels |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh industrial environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with top-block protection preventing accidental overwrite of boot code during field upgrades. Use Value: Top 32 KWord block (3F8000H–3FFFFFH) remains immutable while application code in lower sectors is updated - ensuring system recoverability. |
Use Scenario: Holding boot firmware and GUI assets in human-machine interface panels deployed in factory automation lines. IC Role / Device Role / Timing Role: Primary x16 parallel flash memory interfaced to ARM9 or ColdFire MCU with 70 ns access guaranteeing deterministic boot timing. Use Value: 70 ns read access and JEDEC pinout allow direct integration into legacy 16-bit bus designs without glue logic or timing margin compromises. |
| Configuration Storage in Motor Drives | Secure Parameter Storage in Medical Devices |
Use Scenario: Retaining motor calibration tables, PID coefficients, and safety thresholds in variable-frequency drives subject to thermal cycling. IC Role / Device Role / Timing Role: High-reliability configuration memory leveraging >100-year data retention and 100,000-cycle endurance. Use Value: Fixed erase/program times eliminate runtime variability - critical for deterministic parameter reload during power-up sequences. |
Use Scenario: Storing encrypted device identifiers and regulatory compliance parameters in Class II medical instruments requiring traceability. IC Role / Device Role / Timing Role: Secure storage element using factory-programmed 128-bit ID and user-writable 128-bit segment with lock-out capability. Use Value: User Security ID lock-out prevents post-deployment tampering - satisfies IEC 62304 traceability and audit requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6402B-70-4C-EKE | Same die and specs; EKE-T variant includes tape-and-reel packaging for automated SMT assembly | No functional difference; identical pinout, timing, and protection features | Select EKE-T for high-volume production; EKE for prototyping or manual placement |
| SST38VF6402-70-4C-EKE | Newer generation; 64 Mbit x16, 70 ns, but uses enhanced SuperFlash+ with 200K cycles and 200-year retention | Not pin-compatible - different TSOP-48 pinout (RST# relocated); requires PCB redesign | Prefer SST38VF6402 for new designs requiring extended lifecycle; SST39VF6402B remains viable for legacy board reuse |
Compared with SST39VF6402B-70-4C-EKE-T, the EKE variant offers identical electrical behavior but lacks tape-and-reel support, while SST38VF6402 delivers higher endurance and retention but mandates layout changes due to pin relocation - making SST39VF6402B-70-4C-EKE-T optimal for cost-sensitive, volume-manufactured legacy systems.
Availability
SST39VF6402B-70-4C-EKE-T is available at Aetrix Electronics and suitable for industrial control systems, human-machine interface panels, and motor drive firmware storage requiring stable component supply across extended product lifecycles.
Supply support for SST39VF6402B-70-4C-EKE-T 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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The SST39VF6402B belongs to Microchip's Multi-Purpose Flash Plus (MPF+) product line, designed specifically for reliable, low-voltage firmware and configuration storage in resource-constrained embedded systems where pin compatibility and long-term data integrity are critical.
FAQ
What does the "-70" in SST39VF6402B-70-4C-EKE-T signify?
The "-70" denotes the maximum guaranteed read access time of 70 nanoseconds under specified operating conditions (VDD = 2.7–3.6 V, TA = 0°C to +70°C). This timing parameter directly determines the highest supported bus clock frequency for deterministic read operations - for example, enabling reliable use with 14 MHz microcontroller interfaces. The SST39VF6402B-70-4C-EKE-T maintains this access time across its commercial temperature range.
How does the top-block hardware protection work on SST39VF6402B-70-4C-EKE-T?
The SST39VF6402B-70-4C-EKE-T implements top-block hardware protection via the WP# pin: when WP# is driven low, the top 32 KWord block (address range 3F8000H–3FFFFFH) is locked against all program and erase commands. This protects boot code from corruption during field firmware updates. If WP# is left floating, an internal pull-up holds it high, leaving the block unprotected - so intentional grounding is required for security.
Is SST39VF6402B-70-4C-EKE-T pin-compatible with SST39VF6401B?
Yes, SST39VF6402B-70-4C-EKE-T is pin-compatible with SST39VF6401B in both TSOP-48 and TFBGA-48 packages, sharing identical pin assignments and electrical characteristics. The only functional difference is protection scope: SST39VF6402B-70-4C-EKE-T protects the top 32 KWord block, while SST39VF6401B protects the bottom block (000000H–007FFFH). No PCB changes are needed for substitution.
What is the purpose of the RST# pin on SST39VF6402B-70-4C-EKE-T?
The RST# pin on SST39VF6402B-70-4C-EKE-T provides hardware-initiated recovery: holding RST# low for ≥100 ns (TRP) terminates any in-progress erase or program operation and forces the device back into Read mode. This is essential for fault recovery in safety-critical systems. After RST# returns high, a minimum hold time (TRHR) is required before valid reads resume - ensuring internal state stabilization.
Can SST39VF6402B-70-4C-EKE-T be used in industrial temperature applications?
The SST39VF6402B-70-4C-EKE-T is rated for commercial temperature range (0°C to +70°C) per its "4C" suffix. For industrial applications (−40°C to +85°C), the "4I" variant (e.g., SST39VF6402B-70-4I-EKE-T) must be used - it undergoes extended temperature screening and guarantees full specification compliance across that range. Using the "4C" version outside 0–70°C may result in timing violations or data retention degradation.
SST39VF6402B-70-4C-EKE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
SST39VF6402B-70-4C-EKE-T FAQ
1.How can I place an order for SST39VF6402B-70-4C-EKE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF6402B-70-4C-EKE-T 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-70-4C-EKE-T reliable?
The price and inventory of SST39VF6402B-70-4C-EKE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF6402B-70-4C-EKE-T is usually 5 days.
3.What payment methods are accepted for SST39VF6402B-70-4C-EKE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6402B-70-4C-EKE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF6402B-70-4C-EKE-T?
SST39VF6402B-70-4C-EKE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF6402B-70-4C-EKE-T 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-70-4C-EKE-T?
For technical support, including SST39VF6402B-70-4C-EKE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF6402B-70-4C-EKE-T requirements.
6.How does Aetrix verify that SST39VF6402B-70-4C-EKE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF6402B-70-4C-EKE-T 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-70-4C-EKE-T meets industry standards.
7.What is the process for return or replacement of SST39VF6402B-70-4C-EKE-T?
All SST39VF6402B-70-4C-EKE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6402B-70-4C-EKE-T, 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-70-4C-EKE-T part is unused and in its original packaging.
Return procedure for SST39VF6402B-70-4C-EKE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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