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Microchip Technology SST38VF6404BT-70I/TV
- Part No.:
- SST38VF6404BT-70I/TV
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6404BT-70I/TV.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,974
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Product details
Overview
SST38VF6404BT-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 2.7–3.6 V, delivers 70 ns read access time, supports 100,000 erase/write cycles, and retains data for >100 years - enabling reliable firmware storage in industrial controllers and network boot loaders.
For engineers reviewing the SST38VF6404BT-70I/TV datasheet, SST38VF6404BT-70I/TV pinout, SST38VF6404BT-70I/TV application, or SST38VF6404BT-70I/TV equivalent, key selection criteria include boot-block protection architecture, 16-word write buffer performance, uniform vs. non-uniform block erase behavior, JEDEC x16 pinout compliance, and TSOP-48 package compatibility with legacy PCB layouts.
Technical Context
The SST38VF6404BT-70I/TV implements Microchip's SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, delivering fixed erase/program times independent of cycle count. Its memory map features a 32 KWord uniform block structure across most of the array, plus a dedicated 4 KWord boot block at address A21–A15 = 1111111XXX (B127–B134), where each 4 KWord sub-block has individual VPB/NVPB control.
It supports three hardware-based protection modes: WP#-enabled boot block lock, software-controlled individual 32 KWord block locking, and password-protected security ID (248 words OTP). Command execution uses standard JEDEC-compliant sequences latched on WE#/CE# edges, with status monitored via DQ7 (Data# Polling), DQ6/DQ2 (Toggle Bits), and RY/BY# output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4M × 16 (64 Mbit); enables 16-bit parallel data bus interface with 22-bit addressing (A0–A21) |
| Read Access Time | 70 ns (max); defines minimum clock-to-data delay for synchronous system timing budgets |
| Page Read Speed | 25 ns per word (8-word page); reduces average instruction fetch latency in boot code execution |
| Write Buffer Size | 16-word buffer; allows burst programming of up to 16 words with single command initiation |
| Erase Performance | 18 ms block-erase (typ), 40 ms chip-erase (typ); enables fast field firmware updates without extended downtime |
| Data Retention | >100 years; guarantees long-term integrity of stored configuration or calibration data |
| Endurance | 100,000 cycles (min); supports frequent reprogramming in development or field-upgrade scenarios |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package), RoHS-compliant, lead-free, standard JEDEC x16 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus; A21–A15 selects 32 KWord block during erase; A2–A0 toggles within 8-word page during Page Read |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; outputs valid data when CE# and OE# are low; tri-stated otherwise |
| CE# | Chip Enable | Active-low device select; must be low to enable read/write operations and latch address/data |
| OE# | Output Enable | Active-low output gate; controls data bus drive; high disables outputs regardless of CE# state |
| WE# | Write Enable | Active-low write control; latches command/address/data on falling/rising edges per JEDEC timing |
| WP# | Write Protect | Hardware boot block lock; grounded to prevent accidental erase/program of B127–B134 boot region |
| RST# | Reset | Active-low hardware reset; forces device into Read mode and clears internal command state |
| RY/BY# | Ready/Busy | Open-drain status indicator; low during active program/erase; used for polling-free interrupt-driven firmware flow |
| VDD | Power Supply | 2.7–3.6 V core supply; powers all logic and flash operations; requires local decoupling |
| VSS | Ground | Reference return path for all signals and power; must be low-impedance for noise immunity |
| NC | No Connection | Unbonded pin; no internal connection; must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/-Resume | Allows real-time read/program of non-erasing blocks during background erase - critical for multitasking bootloaders |
| Auto Low Power Mode | Reduces active read current from 25 mA to 5 μA after valid access - cuts standby power in always-on edge devices |
| 128-bit Unique ID + Security-ID | Enables device-level authentication and secure firmware binding using 248-word OTP space |
| JEDEC & CFI Compliance | Guarantees interoperability with standard flash controllers and BIOS/UEFI firmware stacks without custom drivers |
| Uniform Block Architecture | All main array blocks are 32 KWord; simplifies memory management and avoids fragmentation in bootloader partitioning |
Applications
| Industrial PLC Firmware Storage | Network Router Boot Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile boot and application code storage with hardware write protection against EMI-induced corruption. Use Value: 100,000-cycle endurance and >100-year retention ensure firmware integrity over 15+ year product lifecycles without recalibration or replacement. | Use Scenario: Holding boot code and configuration images in enterprise-grade routers requiring secure, field-upgradable firmware. IC Role / Device Role / Timing Role: Primary x16 flash memory mapped at reset vector; supports fast Page Read for rapid boot sequence execution. Use Value: 25 ns Page Read access and 16-word write buffer cut boot time by ~35% versus legacy 70 ns single-word flash parts. |
| Medical Device Configuration Storage | Automotive Infotainment System Flash |
Use Scenario: Storing calibrated sensor offsets, user preferences, and regulatory audit logs in Class II medical equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter storage with password-protected Security-ID and irreversible block locking. Use Value: Hardware WP# and software-controlled 32 KWord block protection prevent unauthorized modification of FDA-mandated calibration data. | Use Scenario: Hosting infotainment OS kernel and UI assets in automotive head units with ASIL-B compatible update mechanisms. IC Role / Device Role / Timing Role: Dual-boot capable flash with separate protected boot blocks (B127–B134) for fail-safe A/B firmware partitioning. Use Value: Non-uniform boot block (4 KWord sub-blocks) enables granular, OTA-safe updates of safety-critical boot code without risking full image corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6401B-70-4C-EKE | Same 64 Mbit x16 organization, but uniform 32 KWord boot block (B0 only); lacks 4 KWord sub-block granularity in B127 region | Less suitable for A/B dual-boot schemes requiring fine-grained boot sector updates | Select SST38VF6404BT-70I/TV when boot block flexibility and sub-block VPB/NVPB control are required |
| MX29LV640ETTI-70G | 64 Mbit x16, 70 ns access, but uses older floating-gate process; 10,000-cycle endurance vs. 100,000; no Erase-Suspend | Higher risk of field failure in high-update-frequency applications; no background operation capability | Choose SST38VF6404BT-70I/TV for extended lifecycle, lower energy per erase/program, and real-time suspend/resume |
Compared with SST39VF6401B-70-4C-EKE and MX29LV640ETTI-70G, the SST38VF6404BT-70I/TV provides superior endurance, deterministic erase times unaffected by wear, and hardware-supported boot block sub-division - making it optimal for safety-critical, field-upgradable embedded systems where reliability and update flexibility are non-negotiable.
Availability
SST38VF6404BT-70I/TV is available at Aetrix Electronics and suitable for industrial PLCs, network infrastructure equipment, medical diagnostics platforms, and automotive infotainment systems requiring stable component supply across multi-year production programs.
Supply support for SST38VF6404BT-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 nonvolatile memory solutions for industrial, automotive, and communications markets.
The SST38VF6404BT-70I/TV belongs to Microchip's Advanced MPF+ Flash family, engineered specifically for high-reliability embedded firmware and configuration storage where deterministic timing, long-term data retention, and robust hardware protection are mandatory.
FAQ
What is the boot block configuration of the SST38VF6404BT-70I/TV?
The SST38VF6404BT-70I/TV features a non-uniform boot block architecture with 32 KWord main blocks and a dedicated 4 KWord boot region spanning B127–B134 (address A21–A15 = 1111111XXX). Each 4 KWord sub-block has independent Volatile and Non-Volatile Protection Bit (VPB/NVPB) control, enabling granular locking for A/B firmware partitions - a capability not present in uniform-boot variants like SST38VF6401B.
Does the SST38VF6404BT-70I/TV support Page Read, and what is its timing benefit?
Yes, the SST38VF6404BT-70I/TV supports Page Read with 25 ns access per word across an 8-word page. This reduces average instruction fetch latency by up to 65% compared to standard 70 ns single-word reads, accelerating boot code execution in resource-constrained microcontrollers without requiring external cache.
How does the Write-Buffer Programming feature improve throughput in the SST38VF6404BT-70I/TV?
The SST38VF6404BT-70I/TV's 16-word Write Buffer reduces effective programming time to 1.75 μs per word (vs. 7 μs for single-word writes), enabling burst programming of firmware patches or configuration updates with minimal CPU intervention - critical for real-time systems where host processor bandwidth is constrained.
What hardware protection mechanisms does the SST38VF6404BT-70I/TV provide against accidental writes?
The SST38VF6404BT-70I/TV offers three-tiered protection: (1) WP# pin hard-locks the boot block when grounded; (2) software-controlled 32 KWord block locking via command sequence; and (3) password-protected Security-ID OTP space. These layers prevent unintended firmware corruption during power transients or software faults.
Is the SST38VF6404BT-70I/TV RoHS compliant and what package does it use?
Yes, the SST38VF6404BT-70I/TV is RoHS compliant and supplied in a 48-lead TSOP package with standard JEDEC x16 pinout. This package ensures drop-in compatibility with existing PCB footprints designed for industry-standard 64 Mbit flash memories, minimizing redesign effort.
SST38VF6404BT-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
SST38VF6404BT-70I/TV FAQ
1.How can I place an order for SST38VF6404BT-70I/TV through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6404BT-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 SST38VF6404BT-70I/TV reliable?
The price and inventory of SST38VF6404BT-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 SST38VF6404BT-70I/TV is usually 5 days.
3.What payment methods are accepted for SST38VF6404BT-70I/TV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6404BT-70I/TV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6404BT-70I/TV?
SST38VF6404BT-70I/TV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6404BT-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 SST38VF6404BT-70I/TV?
For technical support, including SST38VF6404BT-70I/TV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6404BT-70I/TV requirements.
6.How does Aetrix verify that SST38VF6404BT-70I/TV is sourced from the original manufacturer or authorized distributors?
All SST38VF6404BT-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 SST38VF6404BT-70I/TV meets industry standards.
7.What is the process for return or replacement of SST38VF6404BT-70I/TV?
All SST38VF6404BT-70I/TV units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6404BT-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 SST38VF6404BT-70I/TV part is unused and in its original packaging.
Return procedure for SST38VF6404BT-70I/TV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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