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Microchip Technology SST38VF6403B-70-5I-B3KE-T
- Part No.:
- SST38VF6403B-70-5I-B3KE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6403B-70-5I-B3KE-T.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,650
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Product details
Overview
SST38VF6403B-70-5I-B3KE-T from Microchip Technology is a 64 Mbit (4M × 16) Advanced Multi-Purpose Flash Plus memory IC designed for embedded code and data storage in space-constrained, low-voltage systems. It operates from a single 2.7–3.6 V supply, delivers 70 ns read access time, supports 100,000 program/erase cycles, and retains data for >100 years. It is used in industrial controllers and network edge devices requiring reliable, field-upgradable firmware storage.
For engineers reviewing the SST38VF6403B-70-5I-B3KE-T datasheet, SST38VF6403B-70-5I-B3KE-T pinout, SST38VF6403B-70-5I-B3KE-T application, or SST38VF6403B-70-5I-B3KE-T equivalent, key selection considerations include its non-uniform boot block architecture (4 KWord top boot), 48-ball TFBGA package, Write-Buffer Programming capability (1.75 µs/word), and hardware reset (RST#) and ready/busy (RY/BY#) signaling for real-time operation monitoring.
Technical Context
The SST38VF6403B-70-5I-B3KE-T implements SST's SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count. Its memory map features a top-boot configuration with eight 4 KWord sub-blocks in Block B0 and 127 uniform 32 KWord blocks elsewhere.
It supports JEDEC-standard x16 flash command sets, CFI compliance, and three end-of-write detection methods: Data# Polling (DQ7), Toggle Bits (DQ6/DQ2), and RY/BY# output. The device integrates hardware write protection (WP#), volatile/non-volatile block locking, and Erase-Suspend/-Resume functionality for concurrent read/program during background erase.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16), providing 8 MB of nonvolatile storage for firmware or configuration data |
| Read Access Time | 70 ns - enables direct execution from flash (XIP) in microcontroller-based systems with ≤14 MHz bus timing |
| Page Read Speed | 25 ns per word (8-word page) - accelerates sequential data fetches in boot loaders or parameter tables |
| Write-Buffer Capacity | 16-word buffer - reduces effective programming time to 1.75 µs/word, cutting full-page writes by >80% vs. single-word mode |
| Endurance & Retention | 100,000 program/erase cycles minimum; >100 years data retention - suitable for long-life industrial deployments without refresh |
| Supply Voltage | 2.7–3.6 V - compatible with modern 3.3 V logic rails and battery-backed operation down to 2.7 V |
| Operating Temperature | –40°C to +85°C (Industrial grade 'I') - validated for use in uncontrolled ambient environments |
Pinout & Package
Package: 48-ball Thin Fine-Pitch Ball Grid Array (TFBGA), RoHS-compliant, 6 mm × 8 mm footprint, 0.8 mm ball pitch.
| 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 operations |
| DQ0–DQ15 | Data I/O (x16) | 16-bit bidirectional data bus with tri-state outputs controlled by CE# and OE#; latched internally during writes |
| CE# | Chip Enable | Active-low chip select; device enters standby (<5 µA) when high; required low for all operations |
| OE# | Output Enable | Active-low output gate; controls data bus drive; high impedance when high or CE# high |
| WE# | Write Enable | Active-low control for write latching; falling edge latches address, rising edge latches data per JEDEC timing |
| WP# | Write Protect | Hardware boot block lock: grounded to protect top 4 KWord boot sector from accidental erase/program |
| RST# | Reset Input | Active-low hardware reset; forces device into read mode and clears internal state, including abort flags (DQ1) |
| RY/BY# | Ready/Busy Output | Open-drain status signal: low during active program/erase, high when ready - eliminates polling overhead in real-time systems |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; dual VSS pins ensure stable reference for noise-sensitive flash operations |
| NC | No Connect | Ball A16 is unconnected - must be left floating or tied to ground per PCB design rules; not usable as I/O |
Key Features
| Feature | Design Value |
|---|---|
| Non-uniform Boot Block | Top 4 KWord (B0 sub-blocks S0–S7) with independent VPB/NVPB enables granular firmware update protection while preserving larger uniform blocks for application code |
| Erase-Suspend/-Resume | Allows interrupting a 18 ms block erase to perform reads or writes elsewhere - critical for real-time systems requiring deterministic response during background updates |
| Auto Low Power Mode | Automatically transitions to 5 µA standby after valid read access - cuts active-read current by >99% without software intervention or timing penalties on wake-up |
| 128-bit Unique ID | Factory-programmed serial number accessible via command sequence - enables secure device authentication and anti-cloning in certified industrial equipment |
| Security-ID OTP Area | 248-word one-time-programmable region for customer keys or calibration data - isolated from main array and write-protected by password |
Applications
| Industrial PLC Firmware Storage | Network Router Boot Image |
|---|---|
|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware boot protection and fast page read for rapid startup. Use Value: WP#-enabled top-boot locking prevents corruption of critical startup routines during field firmware upgrades over Modbus TCP. |
Use Scenario: Holding boot loader and kernel images in enterprise-grade Ethernet routers requiring secure, field-upgradable firmware. IC Role / Device Role / Timing Role: Primary XIP-capable flash memory interfaced to ARM Cortex-A series processors via 16-bit parallel bus. Use Value: 25 ns page read and 1.75 µs/word write-buffer programming reduce boot time by 35% vs. legacy NOR flash, accelerating service restoration. |
| Medical Diagnostic Device Configuration | Smart Energy Meter Calibration Data |
|
Use Scenario: Storing FDA-required calibration coefficients and device-specific operational parameters in portable ultrasound units. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter storage with OTP Security-ID for audit-trail integrity. Use Value: 128-bit unique ID and password-protected 248-word OTP area meet IEC 62304 traceability requirements for Class C medical software. |
Use Scenario: Retaining metrology calibration constants and tariff tables in ANSI C12.20-certified smart electricity meters operating for 15+ years. IC Role / Device Role / Timing Role: Long-term data archive with >100-year retention and 100,000-cycle endurance for periodic recalibration events. Use Value: Fixed erase time (18 ms) and cycle-independent performance eliminate software de-rating - simplifying lifetime validation testing. |
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-B3KE-T | Uniform 32 KWord block architecture (no 4 KWord boot sub-blocks); identical timing, voltage, and package | Lacks non-uniform boot protection - unsuitable where top-sector firmware isolation is mandatory | Select when full uniform block layout simplifies memory management firmware and boot security is handled externally |
| MX29LV640ETTI-70G | 70 ns access, 3.0–3.6 V only (no 2.7 V support); no RST# pin; different CFI query structure and command set | Requires board-level reset coordination and voltage rail redesign; not drop-in for existing SST38VF6403B designs | Consider only for new designs prioritizing Macronix supply chain diversification, with full firmware revalidation |
Compared with SST38VF6403B-70-5I-B3KE-T, SST39VF6401B offers simpler block management but forfeits boot-sector granularity, while MX29LV640ETTI demands voltage and reset architecture changes - making SST38VF6403B the optimal choice for industrial systems needing top-boot security and 2.7 V brownout tolerance.
Availability
SST38VF6403B-70-5I-B3KE-T is available at Aetrix Electronics and suitable for industrial PLCs, network infrastructure equipment, medical diagnostics, and smart metering applications requiring stable component supply across multi-year production lifecycles.
Supply support for SST38VF6403B-70-5I-B3KE-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 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 family, engineered specifically for cost-sensitive, low-power, and long-lifecycle industrial and networking applications requiring robust firmware storage with hardware-level security and field upgrade capability.
FAQ
What is the boot block configuration of the SST38VF6403B-70-5I-B3KE-T?
The SST38VF6403B-70-5I-B3KE-T implements a top-boot architecture with eight 4 KWord sub-blocks (S0–S7) in Block B0, each with independent Volatile and Non-Volatile Protection Bits (VPB/NVPB). This allows selective locking of critical boot code while leaving larger 32 KWord blocks available for application firmware - a key differentiator from uniform-block alternatives like the SST39VF6401B.
Does the SST38VF6403B-70-5I-B3KE-T support hardware reset, and how is it used?
Yes, the SST38VF6403B-70-5I-B3KE-T includes an active-low RST# pin that forces the device into read mode and clears internal status flags (including DQ1 abort flag) upon assertion. This provides deterministic recovery from undefined states during power sequencing or firmware crashes - unlike software-only reset methods that rely on functional command execution.
How does the Write-Buffer Programming feature improve efficiency in the SST38VF6403B-70-5I-B3KE-T?
The SST38VF6403B-70-5I-B3KE-T's 16-word Write Buffer reduces effective programming time to 1.75 µs per word - over 4× faster than standard 7 µs word-program mode. By loading up to 16 words before committing to flash, it minimizes WE#/CE# toggle overhead and enables burst writes ideal for firmware patching or configuration table updates in real-time systems.
What are the valid methods to detect completion of a program or erase operation on the SST38VF6403B-70-5I-B3KE-T?
The SST38VF6403B-70-5I-B3KE-T provides three concurrent end-of-write detection methods: Data# Polling (DQ7 toggles until completion), Toggle Bits (DQ6 alternates during operation, stabilizes on finish), and RY/BY# output (active-low signal). These allow flexible implementation - polling for resource-constrained hosts, or hardware interrupt-driven handling using RY/BY# for deterministic latency control.
Is the SST38VF6403B-70-5I-B3KE-T compatible with JEDEC-standard x16 flash interfaces?
Yes, the SST38VF6403B-70-5I-B3KE-T conforms fully to JEDEC Standard JESD21-C for x16 flash pinouts and command sets, including standard Read, Word-Program, Block-Erase, and Chip-Erase sequences. It also supports Common Flash Interface (CFI) queries, enabling automatic driver detection and configuration in Linux MTD and U-Boot environments.
SST38VF6403B-70-5I-B3KE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFBGA
- 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-TFBGA (6x8)
SST38VF6403B-70-5I-B3KE-T FAQ
1.How can I place an order for SST38VF6403B-70-5I-B3KE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6403B-70-5I-B3KE-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 SST38VF6403B-70-5I-B3KE-T reliable?
The price and inventory of SST38VF6403B-70-5I-B3KE-T 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-B3KE-T is usually 5 days.
3.What payment methods are accepted for SST38VF6403B-70-5I-B3KE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6403B-70-5I-B3KE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6403B-70-5I-B3KE-T?
SST38VF6403B-70-5I-B3KE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6403B-70-5I-B3KE-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 SST38VF6403B-70-5I-B3KE-T?
For technical support, including SST38VF6403B-70-5I-B3KE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6403B-70-5I-B3KE-T requirements.
6.How does Aetrix verify that SST38VF6403B-70-5I-B3KE-T is sourced from the original manufacturer or authorized distributors?
All SST38VF6403B-70-5I-B3KE-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 SST38VF6403B-70-5I-B3KE-T meets industry standards.
7.What is the process for return or replacement of SST38VF6403B-70-5I-B3KE-T?
All SST38VF6403B-70-5I-B3KE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6403B-70-5I-B3KE-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 SST38VF6403B-70-5I-B3KE-T part is unused and in its original packaging.
Return procedure for SST38VF6403B-70-5I-B3KE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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