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Microchip Technology SST38VF6403BT-70I/TV
- Part No.:
- SST38VF6403BT-70I/TV
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6403BT-70I/TV.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,762
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Product details
Overview
SST38VF6403BT-70I/TV 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 2.7–3.6 V supply, delivers 70 ns read access time, supports 100,000 write/erase cycles, and retains data for >100 years. It is used in industrial controllers requiring field-upgradable firmware with hardware boot-block protection.
For engineers reviewing the SST38VF6403BT-70I/TV datasheet, SST38VF6403BT-70I/TV pinout, SST38VF6403BT-70I/TV application, or SST38VF6403BT-70I/TV equivalent, key selection criteria include boot-block protection granularity (4 KWord top boot), Write-Buffer Programming performance (1.75 μs/word), uniform vs. non-uniform erase architecture, and TSOP-48 package compatibility with legacy x16 memory footprints.
Technical Context
The SST38VF6403BT-70I/TV implements Microchip's SuperFlash split-gate cell technology, enabling fixed erase/program times independent of cycle count-unlike floating-gate alternatives. Its architecture features dual protection schemes: hardware WP#-controlled top-boot-block lock and software-configurable individual 32 KWord block protection.
It supports three distinct erase modes-Chip-Erase (40 ms typ), Block-Erase (18 ms typ), and 4 KWord sub-block erase within the boot region-and integrates Erase-Suspend/Resume for real-time read/program during background erase. Page Read (25 ns per word, 8-word buffer) and latched address/data interfaces optimize throughput in microprocessor bus environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16), providing 8 MB of nonvolatile storage for firmware images or configuration tables. |
| Read Access Time | 70 ns max - ensures compatibility with 14 MHz bus timing without wait states in standard microcontroller interfaces. |
| Page Read Speed | 25 ns per word (8-word page) - enables burst reads at ~40 MB/s effective bandwidth for code execution acceleration. |
| Write-Buffer Capacity | 16-word buffer - reduces average programming time to 1.75 μs/word, cutting full-page (16-word) write latency to <28 μs. |
| Endurance & Retention | 100,000 erase/write cycles minimum; >100 years data retention - validated for long-life industrial deployments without refresh. |
| Supply Voltage | 2.7–3.6 V single supply - eliminates need for auxiliary voltage rails and simplifies power design in 3.3 V systems. |
| Protection Granularity | Top 4 KWord boot block + 32 KWord uniform blocks - allows secure bootloader storage while enabling flexible application partitioning. |
Pinout & Package
Package: 48-lead Thin Small Outline Package (TSOP-I, Type I), RoHS-compliant, lead-free, 12 × 20 mm body size, 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus supporting full 4M-word addressing; A21–A15 select 32 KWord blocks during erase. |
| DQ0–DQ15 | Data Input/Output | 16-bit bidirectional CMOS I/O; tri-stated when CE# or OE# high; 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 = high-impedance state regardless of CE#. |
| WE# | Write Enable | Active-low control for latching addresses/data; falling edge latches address, rising edge latches data. |
| WP# | Write Protect | Hardware boot-block lock: grounded = protects top 4 KWord region from accidental erase/program. |
| RST# | Reset | Active-low hardware reset; forces device into Read mode and aborts ongoing operations. |
| RY/BY# | Ready/Busy | Open-drain status indicator: low = active program/erase; high = ready for next command. |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; decoupling required per JEDEC guidelines for stable high-speed operation. |
| NC | No Connection | Pin 22 (TSOP) is unconnected; must be left floating or tied to ground per layout best practices. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide tunneling injector - delivers fixed 18 ms block-erase time across full lifecycle, eliminating de-rating of system timing. |
| Write-Buffer Programming | 16-word buffer with 1.75 μs/word typical programming - reduces firmware update time by >85% vs. single-word writes. |
| Erase-Suspend/Resume | Sub-20 μs suspend-to-read latency - enables real-time diagnostics or UI updates during background flash erase. |
| Boot Block Protection | 4 KWord top-boot region with hardware (WP#) and software (VPB/NVPB) locking - prevents corruption of critical bootloader code. |
| CFI Compliance | JEDEC JESD68-compliant Common Flash Interface - enables OS-level auto-detection and standardized driver support. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing updatable ladder logic and I/O mapping tables in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile x16 parallel interface memory mapped to microcontroller address space; accessed via standard bus cycles. Use Value: 4 KWord boot block ensures bootloader integrity during remote firmware upgrades; 100,000-cycle endurance supports 10+ years of field updates. |
Use Scenario: Holding calibrated sensor offsets, user preferences, and regulatory audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure configuration store with password-protected write access and irreversible block locking for compliance-critical parameters. Use Value: Hardware WP# and software VPB/NVPB enable dual-layer protection; >100-year data retention meets FDA 21 CFR Part 11 archival requirements. |
| Automotive Infotainment Bootloader | Networking Equipment Image Storage |
Use Scenario: Hosting signed bootloader code that validates and loads main OS image in head-unit ECUs. IC Role / Device Role / Timing Role: Boot ROM replacement with fast 70 ns read access and hardware reset (RST#) for safe recovery. Use Value: RY/BY# pin enables precise timing of bootloader handoff; Auto Low Power mode (5 μA) minimizes quiescent current during sleep states. |
Use Scenario: Storing multiple firmware versions (primary, backup, recovery) and FPGA bitstreams in enterprise switches. IC Role / Device Role / Timing Role: High-reliability parallel flash supporting Chip-Erase (40 ms) for rapid factory reprogramming and field recovery. Use Value: Uniform 32 KWord block architecture simplifies BOM management across product variants; CFI compliance eases integration with Linux MTD subsystems. |
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-70-4C-EKE | Same 64 Mbit density, 70 ns access, but uniform 32 KWord block architecture (no 4 KWord boot sub-block); lacks Erase-Suspend. | Better suited for applications needing consistent block sizing across entire array, not boot-critical firmware. | Select when boot-block granularity is unnecessary and lower cost is prioritized over suspend capability. |
| MX29LV640ETTI-70G | 64 Mbit, 70 ns, 3.0–3.6 V supply; includes Embedded Algorithm (EAI) but no 128-bit Unique ID or Security-ID OTP area. | Targets cost-sensitive consumer electronics where security features are secondary to price. | Choose for legacy designs already using Macronix parallel NOR; verify WP# behavior and CFI version compatibility. |
Compared with SST38VF6403BT-70I/TV, SST39VF6401B-70-4C-EKE offers simpler block management but no boot sub-block flexibility, while MX29LV640ETTI-70G provides broader vendor support at the expense of integrated security features and suspend functionality.
Availability
SST38VF6403BT-70I/TV is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic devices, automotive infotainment systems, and networking equipment requiring stable component supply across multi-year production cycles.
Supply support for SST38VF6403BT-70I/TV 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with emphasis on reliability, longevity, and industrial-grade qualification.
The SST38VF6403BT-70I/TV belongs to Microchip's Advanced MPF+ Flash family, engineered specifically for embedded systems demanding high endurance, deterministic timing, and robust data protection in harsh operating environments.
FAQ
What is the boot block configuration of the SST38VF6403BT-70I/TV?
The SST38VF6403BT-70I/TV features a top 4 KWord boot block (B0), subdivided into eight 512-word sectors, each with independent Volatile and Non-Volatile Block Protection (VPB/NVPB). This structure enables fine-grained lockdown of bootloader code while allowing application code in adjacent 32 KWord blocks to remain field-upgradable. WP# pin grounding permanently protects this region from accidental erase or program.
Does the SST38VF6403BT-70I/TV support simultaneous read and erase operations?
Yes, the SST38VF6403BT-70I/TV supports Erase-Suspend: issuing the B0H command pauses an active Block-Erase, allowing immediate Page Read or Word-Program to any non-erasing block within 20 μs. DQ2 toggling indicates erase-suspended status, and Erase-Resume (30H) resumes the original operation - critical for real-time systems requiring background firmware updates without interrupting operation.
How does the Write-Buffer Programming feature improve efficiency in the SST38VF6403BT-70I/TV?
The SST38VF6403BT-70I/TV's 16-word Write Buffer reduces average programming time to 1.75 μs per word - over 4× faster than standard 7 μs Word-Program. By loading up to 16 words then executing a single Program Buffer-to-Flash command, total latency for a full buffer drops to under 28 μs, significantly accelerating firmware patching and configuration writes in resource-constrained microcontroller systems.
What protection mechanisms prevent unauthorized writes to the SST38VF6403BT-70I/TV?
The SST38VF6403BT-70I/TV implements three-tiered protection: (1) hardware WP# pin locks the top 4 KWord boot block when grounded; (2) software-controlled VPB/NVPB bits enable volatile or permanent locking of any 32 KWord block; and (3) 248-word One-Time-Programmable Security-ID area stores cryptographic keys or device-specific credentials. Password protection further restricts access to protected regions.
Is the SST38VF6403BT-70I/TV compatible with standard JEDEC x16 NOR flash interfaces?
Yes, the SST38VF6403BT-70I/TV conforms fully to JEDEC Standard 21-C pinouts and command sets for x16 parallel NOR flash, including CFI compliance (JESD68). It uses identical control signals (CE#, OE#, WE#, RY/BY#, WP#, RST#) and timing protocols as industry-standard devices, enabling drop-in replacement in existing 48-pin TSOP designs without PCB or firmware changes.
SST38VF6403BT-70I/TV 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:
- 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:
- 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
SST38VF6403BT-70I/TV FAQ
1.How can I place an order for SST38VF6403BT-70I/TV through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6403BT-70I/TV 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 SST38VF6403BT-70I/TV reliable?
The price and inventory of SST38VF6403BT-70I/TV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6403BT-70I/TV is usually 5 days.
3.What payment methods are accepted for SST38VF6403BT-70I/TV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6403BT-70I/TV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6403BT-70I/TV?
SST38VF6403BT-70I/TV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6403BT-70I/TV 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 SST38VF6403BT-70I/TV?
For technical support, including SST38VF6403BT-70I/TV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6403BT-70I/TV requirements.
6.How does Aetrix verify that SST38VF6403BT-70I/TV is sourced from the original manufacturer or authorized distributors?
All SST38VF6403BT-70I/TV 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 SST38VF6403BT-70I/TV meets industry standards.
7.What is the process for return or replacement of SST38VF6403BT-70I/TV?
All SST38VF6403BT-70I/TV units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6403BT-70I/TV, 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 SST38VF6403BT-70I/TV part is unused and in its original packaging.
Return procedure for SST38VF6403BT-70I/TV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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