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Microchip Technology SST38VF6403B-70-5I-EKE
- Part No.:
- SST38VF6403B-70-5I-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6403B-70-5I-EKE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,750
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Product details
Overview
SST38VF6403B-70-5I-EKE from Microchip Technology is a 64 Mbit (4M × 16) Advanced Multi-Purpose Flash Plus memory IC designed for embedded program/data storage in x16 parallel interface systems. It operates from 2.7–3.6 V, delivers 70 ns read access time, supports 100,000 program/erase cycles, and retains data >100 years - deployed in industrial control firmware updates and boot code storage.
For engineers reviewing the SST38VF6403B-70-5I-EKE datasheet, SST38VF6403B-70-5I-EKE pinout, SST38VF6403B-70-5I-EKE application, or SST38VF6403B-70-5I-EKE equivalent, key selection criteria include its non-uniform boot block architecture (8 KB top boot + 4 KB sub-blocks), 16-word write buffer, erase-suspend/resume capability, and JEDEC-compliant x16 parallel interface timing.
Technical Context
This device implements SST's SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of wear level - unlike floating-gate alternatives where timing degrades over cycles. Its command-set architecture uses standard microprocessor write sequences with CE#/WE# latching to initiate operations including Word-Program, Page Read, Block-Erase, and Chip-Erase.
The SST38VF6403B variant features a non-uniform boot block: B0 contains eight 4 KWord sub-blocks (S0–S7), each with individual volatile/non-volatile protection (VPB/NVPB), while remaining blocks are uniform 32 KWord. It supports Auto Low Power mode (5 µA standby), RY/BY# status signaling, and hardware reset (RST#) for reliable system recovery.
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), meeting real-time boot latency requirements in industrial MCU systems |
| Page Read Speed | 25 ns per word (8-word page), accelerating sequential instruction fetch during execution |
| Write Buffer Size | 16-word buffer, reducing effective programming time to 1.75 µs/word for burst writes |
| Endurance & Retention | 100,000 program/erase cycles minimum; >100 years data retention at 25°C - suitable for field-upgradable systems |
| Supply Voltage | 2.7–3.6 V single supply, compatible with 3.3 V logic domains without level-shifting |
| Protection Features | Hardware WP# pin, software-controlled individual 32 KWord block lock, password protection, and irreversible locking |
Pinout & Package
Package: 48-ball TFBGA (10 mm × 11 mm, 0.8 mm pitch) and 48-lead TSOP (12 mm × 20 mm), both 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 block during erase |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with tri-state outputs controlled by OE# and CE# |
| CE# | Chip Enable | Active-low chip select; device enters standby when high, consuming only 5 µA |
| OE# | Output Enable | Active-low output gate; controls data bus tristate independently of CE# |
| WE# | Write Enable | Controls latching of addresses/data during write/erase command sequences |
| WP# | Write Protect | Hardware lock for top/bottom boot block (B0); grounded to prevent accidental erase/program |
| RST# | Reset | Hardware reset input forcing device into Read mode; required for recovery after power-on or error |
| RY/BY# | Ready/Busy | Open-drain status indicator: low = active program/erase, high = ready for next command |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows temporary interruption of block erase to read/program other blocks - critical for real-time systems requiring background firmware updates |
| Auto Low Power Mode | Reduces active read current from 25 mA to 5 µA after valid access, eliminating need for external power management logic |
| 128-bit Unique ID | Factory-programmed serial number enabling secure device authentication and firmware binding in certified industrial equipment |
| Security-ID OTP Area | 248-word one-time-programmable region for storing cryptographic keys or calibration data - immune to field reprogramming |
| CFI Compliance | JEDEC-standard Common Flash Interface enables automatic detection and parameter reading by host bootloader without hard-coded timing |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Memory |
|---|---|
|
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 x16 parallel flash providing fast 70 ns read access for deterministic boot and instruction fetch, with hardware WP# preventing corruption during brown-out events. Use Value: 100,000-cycle endurance and >100-year data retention ensure firmware integrity across 15+ year product lifecycles without replacement. |
Use Scenario: Holding certified boot loader and safety-critical initialization code in FDA-regulated diagnostic imaging equipment. IC Role / Device Role / Timing Role: Secure, CFI-compliant flash with 128-bit UID and OTP Security-ID used to verify firmware authenticity before execution. Use Value: Irreversible block locking and password protection prevent unauthorized modification of boot sequence - satisfying IEC 62304 traceability requirements. |
| Telecom Base Station Configuration | Automotive Infotainment System Updates |
|
Use Scenario: Storing radio frequency calibration tables and protocol stack parameters in 4G/5G remote radio units exposed to thermal cycling. IC Role / Device Role / Timing Role: High-reliability SuperFlash memory with fixed 18 ms block-erase time, independent of wear level, ensuring consistent update timing across field life. Use Value: Erase-suspend capability allows concurrent read of operational parameters while background calibration data is updated - no service interruption. |
Use Scenario: Hosting updatable UI assets and navigation map tiles in automotive head units requiring OTA firmware patches. IC Role / Device Role / Timing Role: Parallel x16 interface with 16-word write buffer enabling 1.75 µs/word buffered programming for rapid map tile refreshes. Use Value: Uniform 32 KWord blocks (B8–B134) plus protected 4 KWord boot sub-blocks (B0–B7) support dual-bank update schemes with rollback capability. |
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 | Uniform 32 KWord block architecture (no 4 KWord sub-blocks); lacks non-uniform boot block structure of SST38VF6403B | Requires full 32 KWord boot block erasure; unsuitable where fine-grained boot sector protection is mandated | Select only if system design uses uniform block layout and does not require SST38VF6403B's 8 KB top boot + 4 KB sub-block partitioning |
| MX29LV640ETTI-70G | 64 Mbit x16, 70 ns access, but uses AMD/Fujitsu command set (not SST-compatible); no erase-suspend or Auto Low Power mode | No hardware RST# pin; relies on software reset via command; lacks 128-bit UID and Security-ID OTP area | Choose only when migrating legacy AMD-based designs and accepting loss of suspend capability and enhanced security features |
Compared with SST38VF6403B-70-5I-EKE, SST39VF6401B offers simpler uniform block management but sacrifices boot-sector granularity, while MX29LV640ETTI provides pin-compatible voltage/timing but omits critical reliability and security functions like erase-suspend and OTP security storage.
Availability
SST38VF6403B-70-5I-EKE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code memory, telecom base station configuration, and automotive infotainment system updates requiring stable component supply across extended product lifecycles.
Supply support for SST38VF6403B-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 delivering microcontrollers, analog, FPGA, and memory solutions with emphasis on reliability, longevity, and embedded system integration.
The SST38VF6403B belongs to Microchip's Advanced Multi-Purpose Flash Plus (MPF+) family, engineered specifically for cost-sensitive, high-reliability embedded applications requiring fast parallel read/write, robust data protection, and long-term firmware storage.
FAQ
What is the boot block configuration of SST38VF6403B-70-5I-EKE?
The SST38VF6403B-70-5I-EKE implements a non-uniform boot block: Block B0 consists of eight 4 KWord sub-blocks (S0–S7), each with independent volatile/non-volatile protection (VPB/NVPB). This enables granular locking of critical boot code sections while leaving adjacent sub-blocks open for runtime parameter storage - a feature absent in uniform-block variants like SST39VF6401B. The SST38VF6403B-70-5I-EKE datasheet confirms this architecture in Table 3.
Does SST38VF6403B-70-5I-EKE support erase-suspend functionality?
Yes, SST38VF6403B-70-5I-EKE fully supports Erase-Suspend and Erase-Resume commands (B0H and 30H). This allows a block-erase operation to be temporarily halted so that read or program operations can execute in other unprotected blocks - essential for real-time systems needing background firmware updates without interrupting active functions. The SST38VF6403B-70-5I-EKE specification details timing and constraints on suspend/resume hold times in Section 11.
What package options are available for SST38VF6403B-70-5I-EKE?
SST38VF6403B-70-5I-EKE is offered in two RoHS-compliant, lead-free packages: 48-lead TSOP (12 mm × 20 mm) and 48-ball TFBGA (10 mm × 11 mm, 0.8 mm pitch). Pin assignments differ between packages (see Figures 2 and 3 in DS25002A), but signal functions and JEDEC x16 interface compatibility are maintained. The EKE suffix denotes the TFBGA variant per Microchip's packaging nomenclature.
How does the Write-Buffer Programming feature improve throughput in SST38VF6403B-70-5I-EKE?
SST38VF6403B-70-5I-EKE's 16-word write buffer reduces effective programming time to 1.75 µs per word - over 4× faster than standard 7 µs word-program operations. By loading up to 16 words via Write-to-Buffer command then committing them atomically with Program Buffer-to-Flash, the SST38VF6403B-70-5I-EKE minimizes bus arbitration overhead and maximizes burst write efficiency in firmware update routines.
Is SST38VF6403B-70-5I-EKE compatible with JEDEC-standard x16 NOR flash interfaces?
Yes, SST38VF6403B-70-5I-EKE conforms to JEDEC standard pinouts and command sets for x16 parallel NOR flash devices, including common read, write, and erase protocols. It is also CFI (Common Flash Interface) compliant, allowing host systems to auto-detect device geometry, timing, and command support without hardcoded driver assumptions - a key interoperability feature confirmed in the DS25002A preliminary specification.
SST38VF6403B-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
SST38VF6403B-70-5I-EKE FAQ
1.How can I place an order for SST38VF6403B-70-5I-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6403B-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 SST38VF6403B-70-5I-EKE reliable?
The price and inventory of SST38VF6403B-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 SST38VF6403B-70-5I-EKE is usually 5 days.
3.What payment methods are accepted for SST38VF6403B-70-5I-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6403B-70-5I-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6403B-70-5I-EKE?
SST38VF6403B-70-5I-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6403B-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 SST38VF6403B-70-5I-EKE?
For technical support, including SST38VF6403B-70-5I-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6403B-70-5I-EKE requirements.
6.How does Aetrix verify that SST38VF6403B-70-5I-EKE is sourced from the original manufacturer or authorized distributors?
All SST38VF6403B-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 SST38VF6403B-70-5I-EKE meets industry standards.
7.What is the process for return or replacement of SST38VF6403B-70-5I-EKE?
All SST38VF6403B-70-5I-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6403B-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 SST38VF6403B-70-5I-EKE part is unused and in its original packaging.
Return procedure for SST38VF6403B-70-5I-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST38VF6403B-70-5I-EKE Tags
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