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Microchip Technology SST38VF6404-90-5C-EKE
- Part No.:
- SST38VF6404-90-5C-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6404-90-5C-EKE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,734
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Product details
Overview
SST38VF6404-90-5C-EKE from Microchip Technology is a 64 Mbit (4M × 16) CMOS Advanced Multi-Purpose Flash Plus memory IC designed for nonvolatile program, configuration, and data storage in embedded systems. It operates from a single 2.7–3.6V supply, delivers 90 ns read access time, supports 100,000 erase/program cycles, and retains data for >100 years. It is used in industrial controllers and firmware-updatable edge devices requiring reliable, low-power flash with boot-block protection.
For engineers reviewing the SST38VF6404-90-5C-EKE datasheet, SST38VF6404-90-5C-EKE pinout, SST38VF6404-90-5C-EKE application, or SST38VF6404-90-5C-EKE equivalent, this page provides verified technical context, JEDEC-compliant x16 interface details, boot-block memory map specifics for SST38VF6404, and real-world design implications of its 4-word Page Read buffer, Write-Buffer Programming, and Erase-Suspend capability.
Technical Context
The SST38VF6404-90-5C-EKE implements 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 sector erase - specifically, Block B127 contains the 8 KWord boot block (Sectors S1022–S1023), protected via WP# and software-controlled VPB/NVPB per sector.
It uses standard microprocessor bus timing with latched address/data, JEDEC-standard x16 pinout, and CFI compliance. Command execution relies on WE#/CE# controlled sequences; status detection employs DQ6/DQ7 polling and RY/BY# output, while Auto Low Power mode reduces active read current to 3 µA after valid access.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization), providing 8 MB of nonvolatile storage accessible via 22-bit address bus (A0–A21). |
| Read Access Time | 90 ns (max), defining minimum bus cycle time for random word reads in standard Read mode. |
| Page Read Access | 25 ns (typical) for sequential 4-word page reads, reducing average latency to 41.25 ns/word when accessing same-page addresses. |
| Erase Endurance | 100,000 cycles minimum, guaranteeing long-term field reliability without performance degradation over lifetime. |
| Data Retention | Greater than 100 years at +25°C, ensuring firmware integrity across product lifecycle without refresh. |
| Supply Voltage | 2.7–3.6V single supply, compatible with 3.3V I/O systems and eliminating need for separate VPP programming voltage. |
| Write Buffer Size | 16-word buffer, enabling burst programming at 1.75 µs/word - 4× faster than single-word programming (7 µs/word). |
Pinout & Package
Package: 48-ball TFBGA (10 mm × 11 mm, 0.8 mm pitch) and 48-lead TSOP (12 mm × 20 mm). The SST38VF6404-90-5C-EKE uses JEDEC-standard x16 pinout with dedicated WP#, RST#, and RY/BY# control signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus; A21–A12 select sector during Sector-Erase; A21–A15 select block during Block-Erase. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; outputs tri-stated when CE# or OE# is high; latched internally during write. |
| 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-impedance state. |
| WE# | Write Enable | Controls latching of address/data and initiates command sequences; falling/rising edges define timing windows. |
| WP# | Write Protect | Hardware boot-block lock: grounded to protect S1022–S1023 (B127) from accidental erase/program. |
| RST# | Reset | Active-low hardware reset; returns device to Read mode and aborts ongoing operations. |
| RY/BY# | Ready/Busy | Open-drain status output: low = device busy (programming/erasing); high = ready for next command. |
Key Features
| Feature | Design Value |
|---|---|
| Non-uniform Boot Block | SST38VF6404-specific 8 KWord boot area (S1022–S1023 in Block B127) enables secure firmware startup with granular sector-level VPB/NVPB protection. |
| Erase-Suspend/Resume | Allows temporary interruption of sector/block erase to perform reads or writes elsewhere - critical for real-time firmware updates without system stall. |
| Write-Buffer Programming | 16-word buffer reduces effective programming time by up to 75% vs. single-word writes, accelerating field firmware patching. |
| Auto Low Power Mode | Automatically transitions from 4 mA active read to 3 µA standby after valid access, cutting dynamic power in intermittently polled applications. |
| CFI & JEDEC Compliance | Ensures interoperability with standard flash controllers and bootloader firmware without vendor-specific driver modifications. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware and I/O mapping tables in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware boot-block protection prevents corruption during brown-out or reset events. Use Value: 100,000-cycle endurance and >100-year data retention ensure 15+ year deployment without replacement; 90 ns read access meets deterministic scan-time requirements. |
Use Scenario: Holding calibrated sensor offsets, user preferences, and regulatory-compliant audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure configuration memory with sector-level VPB/NVPB locking per SST38VF6404's B127 boot map. Use Value: Erase-suspend capability allows background log writes during active diagnostics; 2.7–3.6V operation supports battery-backed 3.3V systems. |
| Telecom Base Station Boot ROM | Automotive Infotainment OTA Update Cache |
Use Scenario: Hosting boot loader and FPGA configuration bitstreams in carrier-grade wireless infrastructure with zero-downtime upgrade requirements. IC Role / Device Role / Timing Role: High-reliability x16 flash with RY/BY# signaling and Data# Polling for robust firmware validation pre-boot. Use Value: 4-word Page Read (25 ns) accelerates boot sequence; Write-Buffer Programming cuts field update time by 4× versus legacy parallel flash. |
Use Scenario: Caching signed firmware images prior to authenticated installation in head-unit ECUs connected to cellular modems. IC Role / Device Role / Timing Role: Trusted storage with hardware WP# lock on boot sectors and software-controlled individual block protection for rollback-safe dual-bank updates. Use Value: Uniform 18 ms block-erase time enables predictable OTA window sizing; CFI compliance simplifies integration with AUTOSAR Flash EEPROM drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST38VF6402-90-5C-EKE | Boot block located in Block B0 (S0–S1), not B127; identical timing, endurance, and package options. | Requires different address decoding for boot-sector access; unsuitable where B127-based layout is fixed. | Select only if board design targets bottom-boot architecture and firmware expects S0/S1 as protected region. |
| MX29LV640ETTI-90G | 64 Mbit x16, 90 ns access, but lacks Erase-Suspend, Write-Buffer, and per-sector VPB/NVPB; uses different command set. | No runtime interruptible erase; slower field updates; requires full driver rewrite for status polling and protection schemes. | Choose only for cost-sensitive legacy designs where SST38VF6404 features are unused and pinout compatibility is confirmed. |
Compared with SST38VF6402-90-5C-EKE and MX29LV640ETTI-90G, the SST38VF6404-90-5C-EKE uniquely delivers B127 boot-block flexibility, Erase-Suspend for real-time operation, and 16-word Write-Buffer - making it optimal for field-upgradable systems requiring deterministic timing and secure partitioning.
Availability
SST38VF6404-90-5C-EKE is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and telecom infrastructure requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for SST38VF6404-90-5C-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, with emphasis on reliability, longevity, and embedded-system integration.
The SST38VF6404 belongs to Microchip's Advanced Multi-Purpose Flash Plus (MPF+) family, engineered for high-endurance, low-voltage parallel NOR flash applications in firmware-critical embedded systems demanding secure boot and field-upgradability.
FAQ
What boot block configuration does SST38VF6404-90-5C-EKE use?
The SST38VF6404-90-5C-EKE implements a top-boot architecture with the 8 KWord boot block located in Block B127 (Sectors S1022–S1023). This differs from SST38VF6401/6402 and enables hardware write protection via WP# for the highest-address sectors, supporting secure firmware startup in systems where boot code resides at the top of memory space.
How does SST38VF6404-90-5C-EKE handle erase operations in its boot block?
In SST38VF6404-90-5C-EKE, Block B127 contains the boot block (S1022–S1023), and each sector within B127 has its own Volatile and Non-Volatile Protection Bits (VPB/NVPB). A Block-Erase command issued to B127 behaves as Sector-Erase - only erasing the targeted 4 KWord sector - preserving adjacent protected sectors, unlike uniform block erase in non-boot blocks.
What is the purpose of the RY/BY# pin on SST38VF6404-90-5C-EKE?
The RY/BY# pin on SST38VF6404-90-5C-EKE is an open-drain ready/busy indicator: it asserts low during internal Program or Erase operations and goes high when complete. This signal enables hardware-driven wait-state insertion without polling, reducing CPU overhead and improving deterministic timing in real-time firmware update routines.
Does SST38VF6404-90-5C-EKE support Page Read, and how is it implemented?
Yes, SST38VF6404-90-5C-EKE supports 4-word Page Read with 25 ns access time. It uses address bits A21–A2 to select the page and toggles A1/A0 to access words within that page. This mode achieves 41.25 ns average word read time and is controlled solely by CE# and OE# - no special commands required - making it transparent to existing memory controllers.
Can SST38VF6404-90-5C-EKE be used in 3.3V-only systems without level shifting?
Yes, SST38VF6404-90-5C-EKE operates from 2.7–3.6V and is fully compatible with 3.3V I/O interfaces. Its CMOS I/O structure meets JEDEC standards for x16 memories, and all control pins (CE#, OE#, WE#, WP#, RST#, RY/BY#) accept 3.3V logic levels directly - no external level shifters are needed in standard 3.3V embedded designs.
SST38VF6404-90-5C-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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
SST38VF6404-90-5C-EKE FAQ
1.How can I place an order for SST38VF6404-90-5C-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6404-90-5C-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 SST38VF6404-90-5C-EKE reliable?
The price and inventory of SST38VF6404-90-5C-EKE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6404-90-5C-EKE is usually 5 days.
3.What payment methods are accepted for SST38VF6404-90-5C-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6404-90-5C-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6404-90-5C-EKE?
SST38VF6404-90-5C-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6404-90-5C-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 SST38VF6404-90-5C-EKE?
For technical support, including SST38VF6404-90-5C-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6404-90-5C-EKE requirements.
6.How does Aetrix verify that SST38VF6404-90-5C-EKE is sourced from the original manufacturer or authorized distributors?
All SST38VF6404-90-5C-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 SST38VF6404-90-5C-EKE meets industry standards.
7.What is the process for return or replacement of SST38VF6404-90-5C-EKE?
All SST38VF6404-90-5C-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6404-90-5C-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 SST38VF6404-90-5C-EKE part is unused and in its original packaging.
Return procedure for SST38VF6404-90-5C-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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