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Microchip Technology SST38VF6402B-70-5I-EKE-T
- Part No.:
- SST38VF6402B-70-5I-EKE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6402B-70-5I-EKE-T.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,158
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Product details
Overview
SST38VF6402B-70-5I-EKE-T from Microchip Technology is a 64 Mbit (4M × 16) Advanced Multi-Purpose Flash Plus 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 100,000 erase/program cycles, and retains data for >100 years - enabling reliable boot code storage in industrial controllers.
For engineers reviewing the SST38VF6402B-70-5I-EKE-T datasheet, SST38VF6402B-70-5I-EKE-T pinout, SST38VF6402B-70-5I-EKE-T application, or SST38VF6402B-70-5I-EKE-T equivalent, key selection criteria include boot-block protection architecture, 16-word write buffer performance, JEDEC-compliant x16 interface timing, and TSOP-48 package compatibility with legacy PCB layouts.
Technical Context
This device implements SST's SuperFlash technology with split-gate cells and thick-oxide tunneling injectors to achieve fixed erase/program times independent of cycle count - eliminating software de-rating required by conventional flash. Its command-set architecture uses standard microprocessor write sequences with CE#/WE# latching control and supports both word-program (7 µs typical) and write-buffer programming (1.75 µs/word typical).
The SST38VF6402B variant features bottom-boot block configuration: Block B127 (32 KWord, address A21–A15 = 1111111) is hardware-protected via WP# input, while Blocks B0–B126 support uniform 32 KWord erasure. It integrates RY/BY#, RST#, and hardware reset recovery, and conforms to JEDEC-standard x16 flash pinouts and CFI compliance for system interoperability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16), providing 8 MB of nonvolatile storage for firmware images or configuration tables |
| Read Access Time | 70 ns - determines minimum bus cycle time for random reads in 5 MHz–20 MHz CPU interfaces |
| Page Read Speed | 25 ns per word (8-word page) - enables burst-mode instruction fetches without wait states |
| Erase Endurance | 100,000 cycles minimum - supports field-upgradable firmware with multi-year update cadence |
| Data Retention | >100 years at 25°C - ensures long-term reliability in unpowered storage applications |
| Supply Voltage | 2.7–3.6 V - compatible with 3.3 V logic rails and tolerant of brown-out conditions down to 2.7 V |
| Write Buffer Size | 16-word buffer - reduces effective programming time by 9× vs. single-word writes for contiguous updates |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package), RoHS-compliant, lead-free, standard JEDEC MO-142AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus supporting full 4M-word addressing; A21–A15 selects 32 KWord block during erase |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with tri-state outputs controlled by OE# and CE#; latched internally during writes |
| CE# | Chip Enable | Active-low chip select; device enters standby (5 µA) when high; required low for all operations |
| OE# | Output Enable | Active-low output gate; controls data bus drive; high forces DQx into high-impedance state |
| WE# | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per JEDEC command protocol |
| WP# | Write Protect | Active-low hardware lock for boot block (B127); prevents accidental erase/program when grounded |
| RST# | Hardware Reset | Active-low asynchronous reset; returns device to read mode and clears internal state machines |
| RY/BY# | Ready/Busy | Open-drain status indicator; low during active program/erase; used for polling or interrupt-driven operation |
| VDD | Power Supply | 2.7–3.6 V core and I/O supply; decoupling required per JEDEC layout guidelines |
| VSS | Ground | Signal and power ground reference; two dedicated pins for noise reduction |
| NC | No Connection | Unbonded pin; must be left floating or tied to VSS per board design rules |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Protection | Hardware-configured bottom-boot architecture (Block B127) with WP# pin lock - eliminates risk of corrupted bootloader during field updates |
| Erase-Suspend/Resume | Allows real-time read/program of non-erasing blocks during background 18 ms block erase - critical for deterministic response in safety-critical systems |
| Auto Low Power Mode | Reduces active read current from 25 mA to 5 µA after valid access - cuts average power in intermittently polled applications like sensor nodes |
| 128-bit Unique ID | Factory-programmed serial number accessible via command sequence - enables secure device authentication and traceability |
| CFI Compliance | Industry-standard Common Flash Interface support - simplifies driver development and enables auto-detection in U-Boot/Linux kernel |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in factory environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Nonvolatile boot and application code storage with hardware write protection on boot sector to prevent corruption during power loss. Use Value: 100,000-cycle endurance and >100-year retention ensure firmware integrity across 15+ year product lifecycles without recalibration or replacement. | Use Scenario: Holding calibrated sensor offsets, user preferences, and regulatory audit logs in portable diagnostic equipment requiring FDA-compliant data persistence. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration storage with password-protected individual block locking for HIPAA-compliant parameter sets. Use Value: 248-word OTP Security-ID space enables cryptographic key binding to device identity, satisfying IEC 62304 traceability requirements. |
| Automotive Infotainment Boot ROM | Networking Equipment Image Storage |
Use Scenario: Hosting primary boot loader and fail-safe recovery image in automotive head units subjected to -40°C to +105°C ambient and ISO 7637-2 load dump transients. IC Role / Device Role / Timing Role: AEC-Q100 qualified (Grade 3) boot memory with RST#-driven hardware reset recovery and 70 ns read access for fast cold-start. Use Value: Single 3.3 V supply and 5 µA standby current reduce power management complexity versus multi-rail alternatives. | Use Scenario: Storing dual firmware images (active/backup) and FPGA configuration bitstreams in enterprise switches requiring zero-downtime upgrades. IC Role / Device Role / Timing Role: High-reliability storage with 16-word write buffer enabling sub-30 ms firmware patch application without service interruption. Use Value: Erase-suspend capability allows live packet forwarding during background flash reprogramming - meeting carrier-grade 99.999% uptime SLAs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST38VF6401B-70-5I-EKE-T | Top-boot configuration (B0 protected), identical density/timing/package; differs only in boot block location | Requires PCB-level WP# routing to top boot block instead of bottom; firmware partitioning must align with B0 address range | Select when existing design uses top-boot layout or requires simultaneous upgrade with SST38VF6401B-based systems |
| MX29LV640ETTI-70G | 64 Mbit x16, 70 ns, but uses older AMD/Fujitsu command set; no write buffer or erase-suspend; 10,000-cycle endurance | Lacks advanced features needed for frequent field updates; requires longer erase times and software polling overhead | Choose only for cost-sensitive legacy designs where feature parity is not required and endurance demands are low |
Compared with SST38VF6401B-70-5I-EKE-T, the SST38VF6402B-70-5I-EKE-T offers bottom-boot protection matching common bootloader placement, while MX29LV640ETTI-70G lacks write buffering and suspend capability - making it unsuitable for real-time update scenarios requiring guaranteed latency.
Availability
SST38VF6402B-70-5I-EKE-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, automotive infotainment systems, and networking infrastructure requiring stable component supply across extended product lifecycles.
Supply support for SST38VF6402B-70-5I-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 global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its nonvolatile memory portfolio.
The SST38VF6402B belongs to the Advanced Multi-Purpose Flash Plus (MPF+) family, engineered for high-reliability embedded applications demanding fast, low-power, and secure firmware storage with robust data protection.
FAQ
What is the boot block configuration of the SST38VF6402B-70-5I-EKE-T?
The SST38VF6402B-70-5I-EKE-T implements a bottom-boot architecture: Block B127 (32 KWord, address A21–A15 = 1111111) serves as the hardware-protected boot block. When WP# is grounded, this block is locked against erase and program operations - preserving bootloader integrity during system updates. This differs from the SST38VF6401B, which protects Block B0 (top-boot).
Does the SST38VF6402B-70-5I-EKE-T support write buffering, and what is its capacity?
Yes, the SST38VF6402B-70-5I-EKE-T supports Write-Buffer Programming with a 16-word buffer. This enables up to 16 words to be loaded into an internal latch before committing them to flash, achieving a typical programming rate of 1.75 µs per word - significantly faster than single-word programming (7 µs typical). The buffer requires exact address alignment (A21–A4 identical) and aborts if misconfigured.
How does the SST38VF6402B-70-5I-EKE-T indicate completion of program or erase operations?
The SST38VF6402B-70-5I-EKE-T provides three concurrent status mechanisms: Data# Polling (DQ7 toggles until completion), Toggle Bit (DQ6 alternates during operation), and RY/BY# (open-drain signal pulled low during active program/erase). These allow flexible polling or interrupt-driven handling without fixed timeout delays - critical for deterministic real-time systems using the SST38VF6402B-70-5I-EKE-T.
What package type is used for the SST38VF6402B-70-5I-EKE-T, and is it RoHS compliant?
The SST38VF6402B-70-5I-EKE-T is supplied in a 48-lead TSOP (Thin Small Outline Package) with standard JEDEC MO-142AC footprint. It is fully RoHS compliant and lead-free, meeting EU Directive 2011/65/EU requirements. Pin assignments match industry-standard x16 flash layouts, enabling drop-in replacement in existing TSOP-48 designs.
Can the SST38VF6402B-70-5I-EKE-T perform erase operations while allowing concurrent reads from other blocks?
Yes, the SST38VF6402B-70-5I-EKE-T supports Erase-Suspend and Erase-Resume commands. During a block-erase operation, issuing the B0H command suspends erasure, allowing immediate read or program access to any non-erasing block - including Page Read at 25 ns - within 20 µs. This capability is essential for maintaining system responsiveness during firmware updates using the SST38VF6402B-70-5I-EKE-T.
SST38VF6402B-70-5I-EKE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
SST38VF6402B-70-5I-EKE-T FAQ
1.How can I place an order for SST38VF6402B-70-5I-EKE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6402B-70-5I-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 SST38VF6402B-70-5I-EKE-T reliable?
The price and inventory of SST38VF6402B-70-5I-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 SST38VF6402B-70-5I-EKE-T is usually 5 days.
3.What payment methods are accepted for SST38VF6402B-70-5I-EKE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6402B-70-5I-EKE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6402B-70-5I-EKE-T?
SST38VF6402B-70-5I-EKE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6402B-70-5I-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 SST38VF6402B-70-5I-EKE-T?
For technical support, including SST38VF6402B-70-5I-EKE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6402B-70-5I-EKE-T requirements.
6.How does Aetrix verify that SST38VF6402B-70-5I-EKE-T is sourced from the original manufacturer or authorized distributors?
All SST38VF6402B-70-5I-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 SST38VF6402B-70-5I-EKE-T meets industry standards.
7.What is the process for return or replacement of SST38VF6402B-70-5I-EKE-T?
All SST38VF6402B-70-5I-EKE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6402B-70-5I-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 SST38VF6402B-70-5I-EKE-T part is unused and in its original packaging.
Return procedure for SST38VF6402B-70-5I-EKE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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