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Microchip Technology SST38VF6403B-70-5I-B3KE
- Part No.:
- SST38VF6403B-70-5I-B3KE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6403B-70-5I-B3KE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,476
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Product details
Overview
SST38VF6403B-70-5I-B3KE from Microchip Technology is a 64 Mbit (4M × 16) Advanced Multi-Purpose Flash Plus memory IC designed for embedded program and configuration storage in industrial and automotive 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.
For engineers reviewing the SST38VF6403B-70-5I-B3KE datasheet, SST38VF6403B-70-5I-B3KE pinout, SST38VF6403B-70-5I-B3KE application, or SST38VF6403B-70-5I-B3KE equivalent, this page provides verified functional identity, JEDEC-compliant x16 interface timing, boot-block protection architecture, nonvolatile security-ID programming, and TSOP/TBGA package mapping - all confirmed against DS25002A Preliminary Specification.
Technical Context
The SST38VF6403B-70-5I-B3KE implements SuperFlash split-gate cell technology with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its command-set architecture complies with JEDEC standard pinouts and CFI, supporting software-controlled block protection, erase-suspend/resume, and Write-Buffer Programming with 16-word buffer depth.
It features dual-mode operation: standard word-program (7 µs typical) and accelerated Page Read (25 ns per word across 8-word pages), with latched address/data bus and RY/BY# status signaling. The device uses Toggle Bit (DQ6/DQ2), Data# Polling (DQ7), and hardware RY/BY# to detect write completion without polling overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization), directly maps to 8 MB of x16 data space |
| Read Access Time | 70 ns max - determines minimum CPU wait-state insertion for synchronous bus interfacing |
| Page Read Speed | 25 ns per word (8-word page) - enables burst-like sequential reads without address re-latching |
| Word-Program Time | 7 µs typical - defines minimum interval between successive word writes in non-buffered mode |
| Write-Buffer Depth | 16 words - reduces effective programming time to 1.75 µs/word when loading full buffer |
| Endurance | 100,000 program/erase cycles - guarantees field-replaceable firmware update capability over product lifetime |
| Data Retention | >100 years at +25°C - ensures long-term reliability in unpowered storage applications |
| Supply Voltage | 2.7–3.6 V - compatible with modern low-voltage microcontroller I/O domains without level-shifting |
Pinout & Package
Package: 48-lead TSOP (Type I, standard pinout, die-up, top view) and 48-ball TFBGA (ball grid array, 6×8 layout). Both packages are RoHS-compliant and Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus (AMS = A21); selects byte/word location; A21–A15 define block address for erase operations |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; tri-stated when CE# or OE# high; latched internally during write |
| 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; must be low with CE# for valid read output |
| WE# | Write Enable | Active-low control for write latching; falling edge latches address, rising edge latches data |
| WP# | Hardware Write Protect | Active-low input that locks top/bottom boot blocks (4 KWord each in SST38VF6403B) against erase/program |
| RST# | Hardware Reset | Active-low signal forcing device into Read mode; used for recovery after invalid command sequences |
| RY/BY# | Ready/Busy Output | Open-drain status indicator: low = active program/erase; high = ready for next command |
| VDD | Power Supply | 2.7–3.6 V core and I/O supply; decoupling required per JEDEC layout guidelines |
| VSS | Ground | Reference return for all signals; two dedicated pins in TSOP/TFBGA for noise reduction |
| NC | No Connection | Unbonded pad (TSOP Pin 26, TFBGA Ball E1); must remain floating, not tied to VDD/VSS |
Key Features
| Feature | Design Value |
|---|---|
| Nonuniform Boot Block Architecture | Two 4 KWord protected boot sectors (B0 and B127) enable independent firmware image storage and fail-safe update |
| Erase-Suspend/Resume | Allows real-time read/program of non-erasing blocks during background 18 ms block-erase - critical for deterministic interrupt latency |
| 128-bit Unique ID + 248-Word OTP Security-ID | Factory-programmed serial number and user-writable one-time-programmable area for device authentication and license binding |
| Auto Low Power Mode | Reduces active read current from 25 mA to 5 µA after valid access - cuts power in idle polling loops without software intervention |
| JEDEC & CFI Compliance | Guarantees interoperability with standard flash controllers, BIOS/UEFI firmware stacks, and automated programming equipment |
| Toggle Bit + Data# Polling + RY/BY# | Three concurrent status detection methods eliminate need for fixed delay timers and improve system throughput predictability |
Applications
| Industrial PLC Firmware Storage | Automotive Instrument Cluster Code Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh temperature environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Nonvolatile x16 code memory interfaced directly to ARM Cortex-M7 or Renesas RX600 MCU local bus with 70 ns timing compliance. Use Value: 100,000-cycle endurance and >100-year retention ensure firmware integrity across 15+ year PLC service life without battery backup. |
Use Scenario: Hosting calibrated gauge graphics, driver warning algorithms, and CAN message lookup tables in digital instrument clusters. IC Role / Device Role / Timing Role: Primary boot and application code storage with hardware WP#-protected boot sector preventing corruption during OTA updates. Use Value: Erase-suspend capability allows simultaneous display refresh (read) and firmware patching (write), eliminating UI freezes during updates. |
| Medical Diagnostic Device Configuration | Network Router Boot Image Storage |
Use Scenario: Holding calibration coefficients, sensor compensation tables, and regulatory-compliant safety parameters in portable ultrasound and ECG units. IC Role / Device Role / Timing Role: Secure configuration memory with 248-word OTP Security-ID used to bind calibration data to device serial number. Use Value: Password-protected individual block locking prevents unauthorized modification of FDA-cleared operational parameters. |
Use Scenario: Storing primary bootloader, Linux kernel, and filesystem images in enterprise-grade Layer 3 switches requiring field-upgradable firmware. IC Role / Device Role / Timing Role: Dual-boot image storage using nonuniform boot blocks (B0/B127), enabling atomic A/B firmware swaps with hardware-level rollback protection. Use Value: 16-word Write Buffer cuts full-image reprogramming time by >60% vs. word-by-word programming, accelerating maintenance windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6401B-70-5I-B3KE | Uniform 32 KWord block architecture (no 4 KWord boot sectors); lacks nonuniform boot block mapping of SST38VF6403B | Suitable for general-purpose code storage but cannot replicate SST38VF6403B's dual small-boot-sector fail-safe update scheme | Select only if boot block granularity is not required and uniform erase behavior is preferred |
| MX29LV640ETTI-70G | 55 ns read access (faster), but 10,000-cycle endurance and no erase-suspend; requires external VPP for programming | Lower reliability ceiling and no background erase capability limit use in safety-critical or high-update-frequency applications | Consider only for cost-sensitive consumer designs where 100k-cycle endurance and suspend/resume are unnecessary |
Compared with SST38VF6403B-70-5I-B3KE, SST39VF6401B offers simpler uniform erase but sacrifices boot flexibility, while MX29LV640ETTI trades endurance and advanced features for raw speed - making SST38VF6403B-70-5I-B3KE optimal for industrial firmware requiring both longevity and deterministic update control.
Availability
SST38VF6403B-70-5I-B3KE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive instrument cluster code memory, medical diagnostic device configuration, and network router boot image storage requiring stable component supply across extended product lifecycles.
Supply support for SST38VF6403B-70-5I-B3KE 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 formed through the acquisition of Silicon Storage Technology (SST), specializing in flash memory, MCUs, analog, and interface solutions for industrial, automotive, and communications markets.
The SST38VF6403B-70-5I-B3KE belongs to the Advanced Multi-Purpose Flash Plus (MPF+) product line, engineered specifically for reliable, low-power, high-endurance parallel NOR flash applications in safety-critical embedded systems requiring field-upgradable firmware.
FAQ
What is the boot block configuration of SST38VF6403B-70-5I-B3KE?
The SST38VF6403B-70-5I-B3KE implements a nonuniform boot block architecture with two 4 KWord protected sectors: B0 (lowest address) and B127 (highest address). Each 4 KWord sector has independent Volatile and Non-Volatile Block Protection (VPB/NVPB), enabling dual-image fail-safe firmware updates. This differs from uniform-block variants like SST39VF6401B.
Does SST38VF6403B-70-5I-B3KE support hardware reset recovery?
Yes, SST38VF6403B-70-5I-B3KE includes an active-low RST# pin that forces the device into Read mode regardless of internal state. A hardware reset clears abort conditions (e.g., DQ1=1 from Write-Buffer failure), exits Erase-Suspend mode, and resets command sequence logic - essential for recovering from invalid command streams or power glitches.
How does the Write-Buffer Programming feature work in SST38VF6403B-70-5I-B3KE?
SST38VF6403B-70-5I-B3KE supports Write-Buffer Programming via a 5–20 cycle command sequence: first three cycles initiate buffer mode, fourth loads block address and word count (max 16), and subsequent cycles load up to 16 words. After loading, the Program Buffer-to-Flash command commits all words simultaneously with 1.75 µs/word effective programming time.
What protection mechanisms prevent accidental erasure of boot code in SST38VF6403B-70-5I-B3KE?
SST38VF6403B-70-5I-B3KE provides three-tier protection: (1) hardware WP# pin locking boot blocks when grounded; (2) software-controlled individual 32 KWord block locking via command set; and (3) password-protected protection enabling secure unlock only after authenticated access - all confirmed in DS25002A Section 3.3.
Is SST38VF6403B-70-5I-B3KE compatible with standard JEDEC x16 NOR flash controllers?
Yes, SST38VF6403B-70-5I-B3KE conforms fully to JEDEC standard pin assignments and command sets for x16 parallel NOR flash. It supports standard Read, Word-Program, Block-Erase, and Chip-Erase commands, and is CFI-compliant - ensuring drop-in compatibility with existing flash controllers, programmers, and BIOS/UEFI implementations without firmware modification.
SST38VF6403B-70-5I-B3KE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFBGA
- 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-TFBGA (6x8)
SST38VF6403B-70-5I-B3KE FAQ
1.How can I place an order for SST38VF6403B-70-5I-B3KE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6403B-70-5I-B3KE 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 reliable?
The price and inventory of SST38VF6403B-70-5I-B3KE 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 is usually 5 days.
3.What payment methods are accepted for SST38VF6403B-70-5I-B3KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6403B-70-5I-B3KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6403B-70-5I-B3KE?
SST38VF6403B-70-5I-B3KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6403B-70-5I-B3KE 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?
For technical support, including SST38VF6403B-70-5I-B3KE 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 requirements.
6.How does Aetrix verify that SST38VF6403B-70-5I-B3KE is sourced from the original manufacturer or authorized distributors?
All SST38VF6403B-70-5I-B3KE 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 meets industry standards.
7.What is the process for return or replacement of SST38VF6403B-70-5I-B3KE?
All SST38VF6403B-70-5I-B3KE units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6403B-70-5I-B3KE, 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 part is unused and in its original packaging.
Return procedure for SST38VF6403B-70-5I-B3KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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