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Microchip Technology SST38VF6404-90-5I-EKE
- Part No.:
- SST38VF6404-90-5I-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6404-90-5I-EKE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,944
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Product details
Overview
SST38VF6404-90-5I-EKE from Microchip Technology is a 64 Mbit (4M × 16) CMOS Advanced Multi-Purpose Flash Plus memory IC, designed for nonvolatile program/data storage in embedded systems. It operates from a single 2.7–3.6 V supply, delivers 90 ns read access time, supports 100,000 program/erase cycles, and retains data for >100 years. It is used in industrial controllers and firmware update modules requiring reliable, low-power flash with hardware boot-block protection.
For engineers reviewing the SST38VF6404-90-5I-EKE datasheet, SST38VF6404-90-5I-EKE pinout, SST38VF6404-90-5I-EKE application, or SST38VF6404-90-5I-EKE equivalent, this page provides verified technical context, JEDEC-compliant x16 interface timing, boot-block protection configuration, Write-Buffer Programming performance (1.75 µs/word), and real-world design implications for firmware storage and secure boot implementation.
Technical Context
The SST38VF6404-90-5I-EKE implements SuperFlash split-gate cell technology with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its architecture includes a 4-word Page Read buffer and 16-word Write Buffer, supporting asynchronous Page Read (25 ns per word) and buffered Word-Program operations.
It features dual protection schemes: hardware-based via WP# pin for top/bottom boot block locking, and software-controlled individual 32 KWord block protection. The device uses standard JEDEC x16 command sets and CFI compliance for interoperability, with RY/BY#, Toggle Bit (DQ6), and Data# Polling (DQ7) for end-of-write detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization), providing 8 MB of addressable nonvolatile storage |
| Read Access Time | 90 ns max - determines minimum bus cycle time for random reads in legacy parallel interfaces |
| Page Read Time | 25 ns per word - enables burst-like throughput for sequential code fetch within 4-word pages |
| Word-Program Time | 7 µs typical - defines latency for single-word updates without buffering overhead |
| Write-Buffer Programming | 1.75 µs/word typical - reduces effective programming time by >4× vs. single-word mode for 16-word bursts |
| Endurance & Retention | 100,000 cycles min / >100 years - ensures long-term reliability in field-deployed firmware storage |
| 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 |
Pinout & Package
Package: 48-ball TFBGA (10 mm × 11 mm, 0.8 mm pitch), RoHS-compliant, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus supporting full 4M-word addressing; A21–A12 select sector during erase |
| DQ0–DQ15 | Data I/O (x16) | Bi-directional CMOS-compatible data bus; latched internally during write; tri-stated when CE# or OE# 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 = high-Z state regardless of CE# status |
| WE# | Write Enable | Controls latching of address/data and initiates internal program/erase; rising edge triggers operation start |
| WP# | Write Protect | Hardware lock for boot block (B127, S1022–S1023); grounded = protection enabled |
| RST# | Reset | Active-low hardware reset; returns device to Read mode and aborts ongoing operations |
| RY/BY# | Ready/Busy | Open-drain status indicator; low = active program/erase; used for hardware flow control |
| VDD | Power Supply | 2.7–3.6 V core and I/O supply; decoupling required per JEDEC layout guidelines |
| VSS | Ground | Reference for all signals; requires low-inductance connection to minimize noise during high-speed writes |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Protection | Hardware-enabled 8 KWord boot area (S1022–S1023 in B127) locked via WP# pin - prevents accidental firmware overwrite during field updates |
| Write-Buffer Programming | 16-word buffer with 1.75 µs/word effective programming - cuts bulk firmware update time by >75% vs. single-word mode |
| Erase-Suspend/Resume | Allows read/program of unprotected sectors during active erase - enables real-time system responsiveness during background flash maintenance |
| Auto Low Power Mode | Reduces active read current from 4 mA to 3 µA after valid access - lowers average power in polling-based boot loaders |
| 128-bit Unique ID + Security-ID | One-time-programmable 256-word security area - supports device authentication and secure key storage in trusted execution environments |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile storage for executable firmware images with guaranteed boot integrity and field-upgrade capability. Use Value: Hardware boot-block protection prevents corruption during power-loss events; 100-year data retention eliminates recalibration concerns over product lifetime. |
Use Scenario: Holding certified boot code and safety-critical configuration parameters in FDA-regulated diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for immutable bootloader and cryptographic keys. Use Value: 128-bit Unique ID and OTP Security-ID enable device-level attestation; >100,000 endurance supports rigorous validation testing cycles. |
| Automotive Infotainment System | Network Router Configuration |
Use Scenario: Storing UI assets, voice recognition models, and OTA update staging partitions in automotive head units. IC Role / Device Role / Timing Role: High-reliability parallel flash interfaced to ARM Cortex-A application processors via static memory controller. Use Value: 90 ns read access meets real-time UI rendering latency budgets; Page Read (25 ns/word) accelerates asset loading from contiguous memory regions. |
Use Scenario: Maintaining persistent configuration, routing tables, and failover scripts in enterprise-grade network infrastructure. IC Role / Device Role / Timing Role: Primary nonvolatile storage for configuration state, supporting atomic write and rollback on error. Use Value: Erase-suspend capability allows concurrent config read/write during background firmware verification - no service interruption during upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6402B-70-5C-EKE | 70 ns read access; 3.0–3.6 V only; no Auto Low Power mode; uniform 64 KWord blocks | Lacks boot-block granularity and suspend/resume - less suitable for secure boot or real-time systems | Prefer when faster read speed is critical and voltage margin >3.0 V; avoid if WP#-based boot protection or low-voltage operation required |
| MX29LV640ETTI-90G | 90 ns read; 2.7–3.6 V; 64 Mbit x16; no Write Buffer; 100K endurance; different command set | No Page Read or Write-Buffer acceleration; lacks 128-bit UID and Security-ID OTP | Select for cost-sensitive designs where firmware size fits in uniform blocks and advanced security features are unnecessary |
Compared with SST38VF6404-90-5I-EKE, SST39VF6402B offers faster read but sacrifices low-voltage operation and power optimization, while MX29LV640ETTI omits performance acceleration and security primitives - making SST38VF6404-90-5I-EKE the only option supporting simultaneous fast boot, secure identity, and real-time erase-suspend in a single 2.7–3.6 V package.
Availability
SST38VF6404-90-5I-EKE is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive infotainment systems requiring stable component supply, long-lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for SST38VF6404-90-5I-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 nonvolatile memory solutions for industrial, automotive, and communications markets.
The SST38VF6404-90-5I-EKE belongs to Microchip's Advanced MPF+ Flash family, engineered for high-reliability embedded firmware storage with integrated security, low-power operation, and JEDEC-standard parallel interface compatibility.
FAQ
What is the boot block configuration of the SST38VF6404-90-5I-EKE?
The SST38VF6404-90-5I-EKE implements a bottom-boot architecture with the 8 KWord boot block located in Sector S1022–S1023 of Block B127 (address range A21–A12 = 1111111110 to 1111111111). This block is protected by the WP# pin when grounded and supports both volatile and non-volatile locking via VPB/NVPB registers. Unlike SST38VF6401/6402, SST38VF6404-90-5I-EKE does not protect the entire B127 block uniformly - only the final two sectors are designated as boot-critical.
Does the SST38VF6404-90-5I-EKE support Page Read, and what is its practical benefit?
Yes, the SST38VF6404-90-5I-EKE supports Page Read with 25 ns access time per word across a 4-word page. This reduces effective read latency for sequential instruction fetch or data streaming compared to standard 90 ns random access. In practice, it enables up to 4× higher sustained read bandwidth for contiguous code sections - critical for boot-time performance in ARM-based systems using static memory controllers.
How does Write-Buffer Programming improve firmware update efficiency in the SST38VF6404-90-5I-EKE?
Write-Buffer Programming in the SST38VF6404-90-5I-EKE allows loading up to 16 words into an internal buffer before committing them to flash, achieving 1.75 µs/word effective programming time versus 7 µs/word in standard mode. This cuts total programming time for a 64 KB firmware image by ~76%, significantly reducing downtime during field updates and improving manufacturing test throughput.
What hardware signals indicate write completion for the SST38VF6404-90-5I-EKE?
The SST38VF6404-90-5I-EKE provides three concurrent write-completion indicators: RY/BY# (active-low open-drain signal), Toggle Bit on DQ6 (toggles during operation, stops when complete), and Data# Polling on DQ7 (complements data during write, returns valid data on completion). These allow flexible software- or hardware-driven synchronization without fixed timeout delays.
Is the SST38VF6404-90-5I-EKE compatible with JEDEC-standard x16 NOR flash interfaces?
Yes, the SST38VF6404-90-5I-EKE conforms fully to JEDEC Standard JESD21-C for x16 parallel NOR flash pinouts, command sets, and electrical specifications. It supports standard commands including Read, Word-Program, Sector/Block/Chip-Erase, and CFI query - ensuring drop-in compatibility with existing memory controllers designed for JEDEC-compliant devices such as Intel StrataFlash or Spansion S29GL series.
SST38VF6404-90-5I-EKE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- Product Status:
- 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:
- 90 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
SST38VF6404-90-5I-EKE FAQ
1.How can I place an order for SST38VF6404-90-5I-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6404-90-5I-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 SST38VF6404-90-5I-EKE reliable?
The price and inventory of SST38VF6404-90-5I-EKE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6404-90-5I-EKE is usually 5 days.
3.What payment methods are accepted for SST38VF6404-90-5I-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6404-90-5I-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6404-90-5I-EKE?
SST38VF6404-90-5I-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6404-90-5I-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 SST38VF6404-90-5I-EKE?
For technical support, including SST38VF6404-90-5I-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6404-90-5I-EKE requirements.
6.How does Aetrix verify that SST38VF6404-90-5I-EKE is sourced from the original manufacturer or authorized distributors?
All SST38VF6404-90-5I-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 SST38VF6404-90-5I-EKE meets industry standards.
7.What is the process for return or replacement of SST38VF6404-90-5I-EKE?
All SST38VF6404-90-5I-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6404-90-5I-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 SST38VF6404-90-5I-EKE part is unused and in its original packaging.
Return procedure for SST38VF6404-90-5I-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST38VF6404-90-5I-EKE Tags
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