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Microchip Technology SST39VF6402B-70-4C-EKE
- Part No.:
- SST39VF6402B-70-4C-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF6402B-70-4C-EKE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:405
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Product details
Overview
SST39VF6402B-70-4C-EKE from Microchip Technology 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 controllers and legacy communication modules.
For engineers reviewing the SST39VF6402B-70-4C-EKE datasheet, SST39VF6402B-70-4C-EKE pinout, SST39VF6402B-70-4C-EKE application, or SST39VF6402B-70-4C-EKE equivalent, key selection considerations include top-boot block protection (3F8000H–3FFFFFH), JEDEC x16 pin compatibility, 100,000-cycle endurance, Auto Low Power mode (3 µA standby), and CFI query support for system-level identification.
Technical Context
The SST39VF6402B-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-set architecture uses six-byte sequences for block/sector erase (30H/50H), with address latching on the falling edge of the sixth WE# pulse.
Hardware data protection includes WP#-controlled top 32 KWord block lock, RST#-driven hardware reset, and noise/glitch immunity (<5 ns pulses ignored). The device supports both Data# Polling (DQ7) and Toggle Bit (DQ6/DQ2) status detection, and enters Auto Low Power mode after valid reads to reduce active current from 9 mA to 3 µA.
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 interfaces in legacy microcontroller systems |
| Supply Voltage | 2.7–3.6 V; compatible with 3.3 V logic domains and tolerant of brown-out conditions down to 2.7 V |
| Endurance | 100,000 program/erase cycles; supports field firmware updates over 10+ years in industrial deployments |
| Data Retention | >100 years; ensures long-term reliability for unpowered archival storage in remote equipment |
| Block Protection | Top 32 KWord (3F8000H–3FFFFFH); safeguards boot code against accidental overwrite during field upgrades |
| Standby Current | 3 µA (typical); enables ultra-low-power sleep modes in battery-backed or energy-harvested systems |
Pinout & Package
Package: 48-ball TFBGA (8 mm × 10 mm) and 48-lead TSOP (12 mm × 20 mm); RoHS-compliant, surface-mountable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | A0–A21 provide full 22-bit addressing; AMS = A21 selects top/bottom boot block for protection |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional bus with internal latching; tri-stated when CE# or OE# is high |
| WE#, CE#, OE# | Control Inputs | Standard x16 asynchronous control: CE# enables chip, OE# gates output, WE# controls write strobe |
| WP# | Hardware Protect | Active-low top-block lock; grounded to prevent program/erase of boot sector (3F8000H–3FFFFFH) |
| RST# | Reset Input | Hardware abort of in-progress erase/program; forces return to read mode within TRP (min 100 ns) |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; VSS pins provide low-impedance return paths for noise-sensitive flash operations |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows real-time read access during background erase; critical for interrupt-driven firmware update routines |
| Security ID Space | 256-bit factory + user programmable ID (128 + 128 bits); supports secure device authentication and anti-cloning |
| CFI Query Support | JEDEC-standard Common Flash Interface; enables automatic driver configuration without hard-coded parameters |
| Auto Low Power Mode | Reduces active read current from 9 mA to 3 µA after valid access; eliminates need for external power gating logic |
| Uniform Erase Architecture | 2 KWord sectors + 32 KWord blocks; simplifies wear leveling and partitioning for multi-image firmware storage |
Applications
| Industrial PLC Firmware Storage | Legacy Telecom Baseband Module |
|---|---|
Use Scenario: Storing boot loader and field-upgradable application firmware in programmable logic controllers operating in harsh environments. IC Role / Device Role / Timing Role: Nonvolatile program memory with top-block protection ensuring boot integrity across 100,000+ power cycles. Use Value: Prevents corruption of startup code during brown-out or interrupted updates, maintaining system recoverability. |
Use Scenario: Holding DSP configuration tables and protocol stacks in discontinued cellular infrastructure baseband units. IC Role / Device Role / Timing Role: x16 parallel flash memory interfaced to legacy 16-bit microcontrollers with 70 ns timing budget. Use Value: Enables in-system reprogramming without board removal, extending service life of end-of-life telecom hardware. |
| Medical Diagnostic Equipment Boot ROM | Automotive Body Control Module (Legacy) |
Use Scenario: Securing certified boot firmware and calibration data in FDA-cleared imaging devices requiring traceable data retention. IC Role / Device Role / Timing Role: High-reliability flash with >100-year data retention and Security ID for audit-trail verification. Use Value: Meets regulatory requirements for immutable firmware history and long-term calibration stability. |
Use Scenario: Storing vehicle-specific configuration maps and diagnostic routines in pre-2010 BCMs using 3.3 V microcontrollers. IC Role / Device Role / Timing Role: JEDEC x16-compatible flash with hardware WP# protecting critical safety-critical boot code. Use Value: Eliminates risk of inadvertent reflash during dealership diagnostics or ECU reprogramming sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6402B-70-4I-EKE | Same die, extended industrial temperature range (–40°C to +85°C) vs. commercial (0°C to +70°C) | Required for under-hood or outdoor industrial enclosures where ambient exceeds 70°C | Select when operating temperature exceeds 70°C; otherwise identical pinout, timing, and command set |
| SST38VF6402-70-4C-EKE | Newer generation with same density and voltage, but enhanced reliability (200K cycles, 200-year retention) and lower 5 µA standby current | Drop-in replacement only if firmware supports updated CFI geometry table and extended command set | Preferred for new designs; requires validation of erase-suspend behavior and security ID programming flow |
Compared with SST39VF6402B-70-4C-EKE, the SST39VF6402B-70-4I-EKE adds thermal robustness without design changes, while the SST38VF6402-70-4C-EKE delivers higher endurance and lower power but requires firmware compatibility testing.
Availability
SST39VF6402B-70-4C-EKE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy telecom baseband modules, and medical diagnostic boot ROM applications requiring stable component supply and long-lifecycle support.
Supply support for SST39VF6402B-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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The SST39VF6402B-70-4C-EKE belongs to Microchip's Multi-Purpose Flash Plus (MPF+) product line, designed specifically for cost-sensitive, high-reliability embedded systems requiring field-upgradable firmware with hardware-level boot protection.
FAQ
What is the boot block protection scheme implemented in SST39VF6402B-70-4C-EKE?
The SST39VF6402B-70-4C-EKE implements top-block hardware protection: when WP# is grounded, the top 32 KWord (3F8000H–3FFFFFH) is locked against program and erase operations. This region corresponds to the boot code area, ensuring firmware integrity during field updates. The SST39VF6402B-70-4C-EKE does not support bottom-block protection - that feature is exclusive to the SST39VF6401B variant.
Does SST39VF6402B-70-4C-EKE support JEDEC-standard command sets and pinouts?
Yes, the SST39VF6402B-70-4C-EKE conforms fully to JEDEC standard pin assignments for x16 memories and supports industry-standard software command sequences for word-program, sector/block/chip erase, and security ID access. Its pinout matches JEDEC MO-143 (TSOP) and MO-245 (TFBGA) standards, enabling drop-in compatibility with other x16 flash devices in existing socket designs.
How does the Auto Low Power mode function in SST39VF6402B-70-4C-EKE?
The SST39VF6402B-70-4C-EKE automatically enters Auto Low Power mode after a valid read cycle completes, reducing active current from 9 mA to 3 µA. It exits this mode on any address or control signal transition (e.g., CE# toggle or A0 change) with zero access-time penalty. This feature eliminates external power management circuitry and is enabled by default - no register configuration is required for SST39VF6402B-70-4C-EKE operation.
Can SST39VF6402B-70-4C-EKE be used in systems requiring >100,000 program/erase cycles?
No - the SST39VF6402B-70-4C-EKE is rated for 100,000 typical program/erase cycles. For applications demanding higher endurance (e.g., frequent logging or dynamic firmware partitioning), Microchip recommends migrating to the SST38VF6402-70-4C-EKE, which offers 200,000 cycles. The SST39VF6402B-70-4C-EKE remains suitable for infrequent field updates where lifetime wear is bounded by system service intervals.
What is the purpose and structure of the Security ID in SST39VF6402B-70-4C-EKE?
The SST39VF6402B-70-4C-EKE provides a 256-bit Security ID space: 128 bits factory-programmed by Microchip (read-only) and 128 bits user-programmable. The user segment can be written via the Security ID Word-Program command and permanently locked using the User Sec ID Program Lock-Out command. Neither segment is erasable. This enables device authentication, anti-counterfeiting, and secure firmware binding in regulated applications.
SST39VF6402B-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
SST39VF6402B-70-4C-EKE FAQ
1.How can I place an order for SST39VF6402B-70-4C-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF6402B-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 SST39VF6402B-70-4C-EKE reliable?
The price and inventory of SST39VF6402B-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 SST39VF6402B-70-4C-EKE is usually 5 days.
3.What payment methods are accepted for SST39VF6402B-70-4C-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6402B-70-4C-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF6402B-70-4C-EKE?
SST39VF6402B-70-4C-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF6402B-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 SST39VF6402B-70-4C-EKE?
For technical support, including SST39VF6402B-70-4C-EKE 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 requirements.
6.How does Aetrix verify that SST39VF6402B-70-4C-EKE is sourced from the original manufacturer or authorized distributors?
All SST39VF6402B-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 SST39VF6402B-70-4C-EKE meets industry standards.
7.What is the process for return or replacement of SST39VF6402B-70-4C-EKE?
All SST39VF6402B-70-4C-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6402B-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 SST39VF6402B-70-4C-EKE part is unused and in its original packaging.
Return procedure for SST39VF6402B-70-4C-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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