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Microchip Technology SST38VF6404B-70-5I-EKE-T
- Part No.:
- SST38VF6404B-70-5I-EKE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6404B-70-5I-EKE-T.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,270
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Product details
Overview
SST38VF6404B-70-5I-EKE-T from Microchip Technology is a 64 Mbit (4M × 16) Advanced Multi-Purpose Flash Plus memory IC designed for embedded code storage and firmware update applications. It operates from a single 2.7–3.6 V supply, delivers 70 ns read access time, supports 16-word write buffering, and features hardware boot block protection with WP# pin control.
For engineers reviewing the SST38VF6404B-70-5I-EKE-T datasheet, SST38VF6404B-70-5I-EKE-T pinout, SST38VF6404B-70-5I-EKE-T application, or SST38VF6404B-70-5I-EKE-T equivalent, this device serves as a JEDEC-compliant, CFI-compatible x16 flash solution optimized for industrial microcontroller boot code storage, FPGA configuration, and secure firmware updates requiring endurance of 100,000 cycles and >100-year data retention.
Technical Context
The SST38VF6404B-70-5I-EKE-T implements SST's proprietary SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count. Its architecture supports uniform 32 KWord block erase and non-uniform 4 KWord boot block erase in the top 4 KWord region (B133–B134), with VPB/NVPB protection per sub-block.
It integrates latched address/data paths, RY/BY# status signaling, hardware reset (RST#), and Auto Low Power mode (5 µA standby). Command execution follows JEDEC-standard x16 flash protocols, including Write-Buffer Programming (1.75 µs/word), Erase-Suspend/Resume, and Data# Polling (DQ7) or Toggle Bit (DQ6/DQ2) completion detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization), enabling 8 MB of firmware or configuration data storage |
| Read Access Time | 70 ns (max), ensuring compatibility with high-speed microcontroller bus timing |
| Page Read Speed | 25 ns per word (8-word page), reducing sequential read latency in boot loaders |
| Write Buffer Size | 16-word buffer, allowing burst programming at 1.75 µs/word for faster firmware updates |
| Endurance & Retention | 100,000 program/erase cycles minimum; >100 years data retention at 25°C |
| Supply Voltage | 2.7–3.6 V single supply, eliminating need for separate VPP generation in system design |
| Standby Current | 5 µA typical (Auto Low Power mode), critical for battery-backed or low-power IoT edge devices |
Pinout & Package
Package: 48-ball TFBGA (10 mm × 8 mm, 0.8 mm pitch), RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus supporting full 4M-word addressing; A21–A15 select erase blocks |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with tri-state outputs controlled by CE# and OE# |
| CE# | Chip Enable | Active-low chip select; device enters standby when high, enabling multi-chip memory expansion |
| OE# | Output Enable | Active-low output gate; controls data bus drive without affecting internal state |
| WE# | Write Enable | Controls latching of addresses/data during write commands; defines command timing edges |
| WP# | Write Protect | Hardware lock for top boot block (B133–B134); grounded to prevent accidental erase/program |
| RST# | Reset | Hardware reset input; forces device into read mode, clearing pending operations |
| RY/BY# | Ready/Busy | Open-drain status indicator: low during program/erase, high when ready for next command |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; dual VSS pins ensure stable reference for high-speed I/O |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Enables real-time interruptible erase: suspend to read/program other blocks, then resume without timing penalty beyond cumulative erase duration |
| Non-Uniform Boot Block | Top 4 KWord region (B133–B134) supports granular 4 KWord erase, preserving critical boot code while updating adjacent firmware sections |
| 128-bit Unique ID + Security-ID | Factory-programmed 128-bit serial number plus 248-word OTP area for device authentication or license binding |
| CFI Compliance | JEDEC JESD68 standard interface enables automatic parameter discovery and vendor-agnostic flash management in bootloader software |
| Toggle Bit & Data# Polling | Dual software status detection (DQ6/DQ7) eliminates need for external polling hardware or fixed delay loops in host firmware |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Boot Code |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware write protection (WP#) and RST#-controlled recovery, ensuring deterministic boot after brownout or reset. Use Value: 100,000-cycle endurance and >100-year retention guarantee field-upgradable firmware without premature wear-out across 15+ year product lifecycles. |
Use Scenario: Holding certified boot code and safety-critical initialization routines in engine control units subject to AEC-Q100 Grade 2 (-40°C to +105°C) requirements. IC Role / Device Role / Timing Role: Primary boot flash with 70 ns read access and Page Read (25 ns/word) to meet ASAM MCAL startup timing constraints. Use Value: Uniform 32 KWord block erase and non-uniform 4 KWord boot block erase allow safe over-the-air (OTA) updates without corrupting validated boot ROM. |
| FPGA Configuration Memory | Medical Device Secure Boot |
Use Scenario: Storing bitstream configuration for Xilinx Spartan or Intel MAX 10 FPGAs in portable diagnostic equipment requiring fast power-on initialization. IC Role / Device Role / Timing Role: Parallel x16 interface provides high-bandwidth configuration loading; 16-word write buffer accelerates partial reconfiguration writes. Use Value: CFI compliance enables automatic detection of geometry and command set by FPGA configuration controller, simplifying board-level bring-up. |
Use Scenario: Securing boot process in FDA-cleared infusion pumps where tamper-proof firmware integrity is mandated by IEC 62304. IC Role / Device Role / Timing Role: Trusted code storage with 128-bit unique ID and 248-word OTP for cryptographic key binding and anti-cloning measures. Use Value: Hardware-based WP# and volatile/non-volatile block protection (VPB/NVPB) enforce immutable boot code, satisfying secure boot chain-of-trust requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6401B-70-5I-EKE-T | Same density and voltage range but uses older SST39 architecture; lacks Write-Buffer Programming and Erase-Suspend | No support for interruptible erase or burst programming; slower effective write throughput | Select only if legacy design compatibility or cost sensitivity outweighs performance and flexibility needs |
| MX29GL640EHTI-70G | 64 Mbit x16 CFI flash from Macronix; 70 ns access, 100K endurance, but no 4 KWord boot block granularity | Uniform 64 KByte block erase only; requires full-block erase for boot region updates | Prefer when standardized JEDEC timing and broad ecosystem tool support are prioritized over boot-block optimization |
Compared with SST38VF6404B-70-5I-EKE-T, SST39VF6401B-70-5I-EKE-T omits advanced features like Write-Buffer and Erase-Suspend, while MX29GL640EHTI-70G lacks the non-uniform boot block structure-making SST38VF6404B-70-5I-EKE-T uniquely suited for systems requiring both high-speed firmware updates and atomic, fine-grained boot code protection.
Availability
SST38VF6404B-70-5I-EKE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot code, FPGA configuration memory, and medical device secure boot requiring stable component supply across extended product lifecycles.
Supply support for SST38VF6404B-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, with deep expertise in embedded control and secure nonvolatile storage.
The SST38VF6404B-70-5I-EKE-T belongs to Microchip's Advanced Multi-Purpose Flash Plus (MPF+) family, engineered specifically for high-reliability embedded systems demanding fast, flexible, and secure firmware/code storage with minimal power consumption.
FAQ
What is the maximum operating temperature range for the SST38VF6404B-70-5I-EKE-T?
The SST38VF6404B-70-5I-EKE-T is rated for industrial temperature operation from –40°C to +85°C, as indicated by the "I" suffix in its part number. This makes it suitable for deployment in factory automation, outdoor infrastructure, and automotive under-hood applications where thermal stability is critical. The device maintains full specification compliance-including 70 ns read access and 5 µA standby current-across this entire range.
Does the SST38VF6404B-70-5I-EKE-T support JEDEC-standard command sets?
Yes, the SST38VF6404B-70-5I-EKE-T fully complies with JEDEC Standard JESD21-C for x16 flash pinouts and command definitions, and is CFI (Common Flash Interface) compliant per JESD68. This ensures interoperability with standard flash controllers and enables automatic parameter detection in bootloader firmware, eliminating manual configuration of timing or geometry parameters for the SST38VF6404B-70-5I-EKE-T.
How does the non-uniform boot block architecture of the SST38VF6404B-70-5I-EKE-T differ from uniform block devices?
The SST38VF6404B-70-5I-EKE-T reserves the top two 4 KWord blocks (B133 and B134) as a non-uniform boot region, allowing 4 KWord granularity for erase operations-unlike uniform 32 KWord blocks elsewhere. This enables safe, atomic updates to boot code without erasing adjacent firmware sections, directly supporting secure OTA update workflows where corruption of the boot loader must be avoided at all costs.
Can the SST38VF6404B-70-5I-EKE-T be used in place of the SST38VF6403B variant?
No-the SST38VF6404B-70-5I-EKE-T and SST38VF6403B have fundamentally different boot block layouts: SST38VF6403B locates its 8 KWord boot region at the bottom (B0), while SST38VF6404B places it at the top (B127–B134). Their memory maps, block addressing, and protection schemes are incompatible; substituting one for the other would require PCB layout changes and firmware rework to match address decoding and protection register settings for the SST38VF6404B-70-5I-EKE-T.
What is the function of the RY/BY# pin on the SST38VF6404B-70-5I-EKE-T?
The RY/BY# (Ready/Busy) pin on the SST38VF6404B-70-5I-EKE-T is an open-drain output that signals active program or erase operations: it drives low during internal Word-Program, Write-Buffer Programming, Block-Erase, or Chip-Erase, and returns high when complete. This allows host processors to poll hardware status instead of relying solely on software methods like Data# Polling (DQ7), improving system responsiveness and reducing firmware complexity for the SST38VF6404B-70-5I-EKE-T.
SST38VF6404B-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
SST38VF6404B-70-5I-EKE-T FAQ
1.How can I place an order for SST38VF6404B-70-5I-EKE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6404B-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 SST38VF6404B-70-5I-EKE-T reliable?
The price and inventory of SST38VF6404B-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 SST38VF6404B-70-5I-EKE-T is usually 5 days.
3.What payment methods are accepted for SST38VF6404B-70-5I-EKE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6404B-70-5I-EKE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6404B-70-5I-EKE-T?
SST38VF6404B-70-5I-EKE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6404B-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 SST38VF6404B-70-5I-EKE-T?
For technical support, including SST38VF6404B-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 SST38VF6404B-70-5I-EKE-T requirements.
6.How does Aetrix verify that SST38VF6404B-70-5I-EKE-T is sourced from the original manufacturer or authorized distributors?
All SST38VF6404B-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 SST38VF6404B-70-5I-EKE-T meets industry standards.
7.What is the process for return or replacement of SST38VF6404B-70-5I-EKE-T?
All SST38VF6404B-70-5I-EKE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6404B-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 SST38VF6404B-70-5I-EKE-T part is unused and in its original packaging.
Return procedure for SST38VF6404B-70-5I-EKE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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