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Microchip Technology SST38VF6401B-70-5I-EKE
- Part No.:
- SST38VF6401B-70-5I-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6401B-70-5I-EKE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,408
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Product details
Overview
SST38VF6401B-70-5I-EKE from Microchip Technology is a 64 Mbit (4M × 16) x16 parallel-interface Advanced Multi-Purpose Flash Plus memory IC, designed for embedded firmware and configuration storage in industrial controllers and network edge devices. It operates from 2.7–3.6 V, delivers 70 ns read access time, supports 100,000 program/erase cycles, and features hardware boot block protection with WP# pin and RY/BY# status output.
For engineers reviewing the SST38VF6401B-70-5I-EKE datasheet, SST38VF6401B-70-5I-EKE pinout, SST38VF6401B-70-5I-EKE application, or SST38VF6401B-70-5I-EKE equivalent, this page provides verified technical context, JEDEC-compliant x16 interface timing, boot-block protection mapping, and real-world use cases in programmable logic controllers and secure boot systems.
Technical Context
The SST38VF6401B-70-5I-EKE implements a CMOS SuperFlash architecture with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of wear. Its command-set-driven operation uses standard microprocessor write sequences to initiate Word-Program, Page Read, Block-Erase, and Chip-Erase functions via CE#, WE#, and OE# control lines.
It supports three distinct status detection methods-Data# Polling (DQ7), Toggle Bits (DQ6/DQ2), and RY/BY# output-for end-of-write verification. The device includes hardware reset (RST#), write protect (WP#), and auto low-power mode (5 µA standby), all compliant with JEDEC-standard x16 flash pinouts and CFI specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization), providing 8 MB of nonvolatile storage for firmware images or configuration tables. |
| Read Access Time | 70 ns (max), enabling direct execution from flash (XIP) in 20 MHz bus systems without wait states. |
| Page Read Speed | 25 ns per word (8-word buffer), reducing sequential read latency by >2× vs. standard random read in boot loader routines. |
| Word-Program Time | 7 µs (typical), allowing rapid field updates of small configuration blocks without system interruption. |
| Block-Erase Time | 18 ms (typical), supporting fast reprogramming of 32 KWord (64 KB) sections during OTA firmware patching. |
| Data Retention | >100 years, ensuring long-term reliability in unattended infrastructure equipment like remote telemetry units. |
| Endurance | 100,000 cycles minimum, validated for frequent parameter logging or calibration data writes in industrial HMI systems. |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package), RoHS-compliant, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus selecting 4M × 16 locations; A21–A15 define block address for erase operations. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with internal latching; tri-stated when CE# or OE# is high. |
| CE# | Chip Enable | Active-low chip select; deactivates device and reduces current to 5 µA in standby. |
| OE# | Output Enable | Active-low output gate; controls data bus visibility without affecting internal state. |
| WE# | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per JEDEC command protocol. |
| WP# | Write Protect | Hardware boot block lock; grounded to prevent accidental erase/program of top/bottom 32 KWord boot sectors. |
| RY/BY# | Ready/Busy Output | Open-drain status indicator; low during active program/erase, used for hardware flow control. |
| RST# | Reset Input | Active-low hardware reset; forces device into read mode and clears internal command state. |
| VDD | Power Supply | 2.7–3.6 V single supply; powers core logic and SuperFlash array with internal charge pump for programming. |
| VSS | Ground | Reference return path for all signals and power; two dedicated pins ensure stable noise margin. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell + thick-oxide injector enables fixed 18 ms block-erase time across full lifecycle, eliminating software de-rating. |
| Page Read Buffer | 8-word asynchronous buffer reduces average read latency to 33 ns/word for sequential instruction fetch in boot ROM applications. |
| Erase-Suspend/Resume | Allows real-time read/program of unprotected blocks during background erase, critical for deterministic response in safety PLCs. |
| 128-bit Unique ID | Factory-programmed serial number enables secure device binding and anti-cloning in certified industrial controllers. |
| CFI Compliance | Standard Common Flash Interface allows automatic detection and configuration by BIOS/bootloader without vendor-specific drivers. |
Applications
| Industrial Programmable Logic Controller (PLC) | Secure Boot Loader for Edge Gateway |
|---|---|
Use Scenario: Storing and executing ladder logic firmware and I/O configuration tables in DIN-rail mounted PLCs operating at -40°C to +85°C. IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP capability; 70 ns read access ensures deterministic scan-cycle timing under worst-case thermal conditions. Use Value: Hardware boot block protection (WP#) prevents corruption of startup code during brown-out recovery, maintaining SIL2 functional safety compliance. | Use Scenario: Verifying and loading signed firmware images in cellular-connected IoT gateways before application processor initialization. IC Role / Device Role / Timing Role: Trusted root-of-trust storage for public keys and hash manifests; RY/BY# signal synchronizes cryptographic verification with flash read operations. Use Value: 128-bit Unique ID binds firmware signature to physical hardware, preventing unauthorized image injection during field updates. |
| Network Switch Firmware Storage | Medical Diagnostic Equipment Configuration |
Use Scenario: Holding microcode patches and MAC table management logic in managed Ethernet switches requiring zero-downtime upgrades. IC Role / Device Role / Timing Role: High-reliability update target; Write-Buffer Programming (1.75 µs/word) enables sub-100ms firmware patch application without link interruption. Use Value: Erase-suspend capability allows concurrent packet forwarding and background flash update, meeting IEEE 802.1Qbv time-sensitive networking requirements. | Use Scenario: Storing calibrated sensor coefficients and regulatory-critical diagnostic parameters in FDA-cleared ultrasound imaging systems. IC Role / Device Role / Timing Role: Tamper-resistant configuration vault; individual 32 KWord block protection isolates calibration data from application firmware partitions. Use Value: >100-year data retention guarantees parameter integrity over full product lifecycle, satisfying IEC 62304 software maintenance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6401B-70-5I-EKE | Same density and pinout, but uses older SST39 architecture without Erase-Suspend or Write-Buffer Programming. | Lacks real-time suspend capability; unsuitable for time-critical systems requiring concurrent flash access. | Select only if legacy design compatibility or cost sensitivity outweighs advanced feature needs. |
| MX29LV640EBTI-70G | 64 Mbit x16, 70 ns access, but requires separate VPP pin for programming and lacks 128-bit UID. | No integrated unique ID or hardware boot block lock; requires external logic for secure boot implementation. | Prefer when existing board layout uses MXIC footprint and security is handled externally. |
Compared with SST38VF6401B-70-5I-EKE, SST39VF6401B-70-5I-EKE omits erase-suspend and write-buffer features needed for deterministic real-time operation, while MX29LV640EBTI-70G lacks the integrated UID and hardware WP# lock essential for certified medical or industrial deployments.
Availability
SST38VF6401B-70-5I-EKE is available at Aetrix Electronics and suitable for industrial automation, secure edge computing, and medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SST38VF6401B-70-5I-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 deep expertise in embedded control and secure nonvolatile storage.
The SST38VF6401B-70-5I-EKE belongs to Microchip's Advanced MPF+ Flash family, engineered specifically for high-reliability, low-power, and secure firmware storage in harsh-environment industrial and medical systems.
FAQ
What is the operating voltage range for the SST38VF6401B-70-5I-EKE?
The SST38VF6401B-70-5I-EKE operates from a single 2.7 V to 3.6 V supply. This wide voltage window supports direct interfacing with 3.3 V logic families and accommodates input ripple or brown-out conditions common in industrial power supplies. The device uses internal charge pumping to generate required programming voltages, eliminating need for external VPP.
Does the SST38VF6401B-70-5I-EKE support hardware write protection for boot code?
Yes, the SST38VF6401B-70-5I-EKE includes dedicated hardware boot block protection activated via the WP# pin. When WP# is grounded, the top or bottom 32 KWord boot sector is locked against accidental program or erase operations - a critical safeguard for bootloader integrity in safety-critical applications.
How does the SST38VF6401B-70-5I-EKE indicate completion of a program or erase operation?
The SST38VF6401B-70-5I-EKE provides three concurrent status indicators: Data# Polling (DQ7), Toggle Bits (DQ6/DQ2), and the RY/BY# output pin. These allow flexible host-side monitoring - software polling for resource-constrained systems or hardware interrupt-driven handling via RY/BY# for deterministic real-time response.
What package type is used for the SST38VF6401B-70-5I-EKE?
The SST38VF6401B-70-5I-EKE is supplied in a 48-lead TSOP (Thin Small Outline Package) with standard JEDEC MO-141AC footprint. This RoHS-compliant surface-mount package supports automated assembly and meets IPC Class 3 reliability standards for industrial-grade PCBs.
Is the SST38VF6401B-70-5I-EKE compatible with JEDEC-standard x16 flash command sets?
Yes, the SST38VF6401B-70-5I-EKE fully complies with JEDEC Standard JESD21-C for x16 flash pinouts and command definitions. It also implements the Common Flash Interface (CFI), enabling automatic identification and parameter retrieval by standard BIOS or bootloader firmware without custom driver development.
SST38VF6401B-70-5I-EKE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- 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
SST38VF6401B-70-5I-EKE FAQ
1.How can I place an order for SST38VF6401B-70-5I-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6401B-70-5I-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 SST38VF6401B-70-5I-EKE reliable?
The price and inventory of SST38VF6401B-70-5I-EKE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6401B-70-5I-EKE is usually 5 days.
3.What payment methods are accepted for SST38VF6401B-70-5I-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6401B-70-5I-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6401B-70-5I-EKE?
SST38VF6401B-70-5I-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6401B-70-5I-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 SST38VF6401B-70-5I-EKE?
For technical support, including SST38VF6401B-70-5I-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6401B-70-5I-EKE requirements.
6.How does Aetrix verify that SST38VF6401B-70-5I-EKE is sourced from the original manufacturer or authorized distributors?
All SST38VF6401B-70-5I-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 SST38VF6401B-70-5I-EKE meets industry standards.
7.What is the process for return or replacement of SST38VF6401B-70-5I-EKE?
All SST38VF6401B-70-5I-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6401B-70-5I-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 SST38VF6401B-70-5I-EKE part is unused and in its original packaging.
Return procedure for SST38VF6401B-70-5I-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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