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Microchip Technology SST38VF6404B-70I/CD
- Part No.:
- SST38VF6404B-70I/CD
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6404B-70I/CD.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,797
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Product details
Overview
SST38VF6404B-70I/CD from Microchip Technology is a 64 Mbit (4M × 16) CMOS Advanced Multi-Purpose Flash Plus memory IC with single 2.7–3.6V supply operation, 70 ns read access time, and 100,000 program/erase cycles endurance. It features hardware boot block protection, 128-bit unique ID, and Security-ID OTP space for secure firmware storage in embedded controllers and industrial HMI systems.
For engineers reviewing the SST38VF6404B-70I/CD datasheet, SST38VF6404B-70I/CD pinout, SST38VF6404B-70I/CD application, or SST38VF6404B-70I/CD equivalent, key selection criteria include its non-uniform boot block architecture (4KWord bottom boot), 48-ball TFBGA package, Write-Buffer Programming (1.75 μs/word), Erase-Suspend capability, and JEDEC-compliant x16 interface timing.
Technical Context
The SST38VF6404B-70I/CD implements Microchip's SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count. Its memory map allocates Block B127 as a 4KWord boot sector with individual VPB/NVPB per sub-block, differing from uniform 32KWord blocks elsewhere.
It supports three write detection methods-Data# Polling (DQ7), Toggle Bits (DQ6/DQ2), and RY/BY# output-and integrates Auto Low Power mode (5 μA standby) triggered after valid read access. Command execution follows JEDEC-standard sequences with WE#/CE# edge-sensitive latching and software data protection via three-byte unlock sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4M × 16 (64 Mbit); enables 16-bit parallel data bus interfacing with microcontrollers and DSPs. |
| Read Access Time | 70 ns; meets timing requirements for 14 MHz bus interfaces without wait states. |
| Page Read Speed | 25 ns per word (8-word page); accelerates sequential firmware reads in boot loaders. |
| Word-Program Time | 7 μs typical; supports real-time field updates with minimal host CPU overhead. |
| Write-Buffer Capacity | 16-word buffer; reduces effective programming time to 1.75 μs/word for burst writes. |
| Endurance & Retention | 100,000 cycles minimum / >100 years data retention; validated for long-life industrial control applications. |
| Supply Voltage | 2.7–3.6 V; compatible with modern low-voltage 3.3V system rails and battery-backed operation. |
Pinout & Package
Package: 48-ball TFBGA (6 mm × 8 mm, 0.8 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus (AMS = A21); selects 4M × 16 locations; A21–A15 define block address for erase operations. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; latched internally during write; tri-stated when CE# or OE# high. |
| CE# | Chip Enable | Active-low device select; must be low with OE# low for valid read; controls power state transitions. |
| OE# | Output Enable | Active-low output gate; enables data output only when CE# is also low; critical for bus sharing. |
| WE# | Write Enable | Active-low write control; latches address/data on falling/rising edges per JEDEC command protocol. |
| WP# | Write Protect | Hardware boot block lock; grounded to protect bottom 4KWord boot sector (Block B127) from accidental erase/program. |
| RST# | Reset | Active-low hardware reset; forces device into read mode; required for recovery after abort or suspend states. |
| RY/BY# | Ready/Busy | Open-drain status indicator; low during internal program/erase; used for hardware flow control without polling. |
| VDD / VSS | Power / Ground | Single 2.7–3.6V supply; decoupling required per Microchip layout guidelines for noise immunity. |
| NC | No Connection | Unbonded ball; must remain unconnected per datasheet; no pull-up/down or routing allowed. |
Key Features
| Feature | Design Value |
|---|---|
| Non-uniform Boot Block | 4KWord bottom boot sector (Block B127) with per-sub-block VPB/NVPB-enables granular firmware protection while preserving full 32KWord blocks elsewhere. |
| Erase-Suspend/-Resume | Allows read/program in non-erasing blocks during active Block-Erase; essential for real-time systems requiring background flash maintenance. |
| Security-ID OTP Space | 248-word user one-time-programmable area; stores cryptographic keys or device-specific identifiers with irreversible write locking. |
| Auto Low Power Mode | 5 μA typical current after valid read; eliminates need for external power gating logic in battery-powered edge devices. |
| CFI Compliance | Industry-standard Common Flash Interface support; enables plug-and-play integration with U-Boot, Linux MTD, and commercial flash programmers. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers with field serviceability requirements. IC Role / Device Role / Timing Role: Nonvolatile program memory with fast Page Read (25 ns) for rapid boot and Word-Program (7 μs) for over-the-air updates. Use Value: 100,000-cycle endurance ensures >10 years of daily firmware revisions in factory automation environments. |
Use Scenario: Holding calibrated sensor parameters and regulatory-compliant device configuration profiles in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure configuration store using Security-ID OTP and hardware WP#-locked boot sector to prevent unauthorized parameter tampering. Use Value: >100-year data retention guarantees calibration integrity across product lifetime without battery backup. |
| Automotive Infotainment Boot Loader | Network Router Firmware Image |
|
Use Scenario: Hosting primary boot loader code that validates and loads main OS image in head-unit systems with ASIL-B functional safety constraints. IC Role / Device Role / Timing Role: Boot block memory with Erase-Suspend capability to allow concurrent diagnostics and firmware patching during runtime. Use Value: 4KWord bottom boot sector (Block B127) provides dedicated, hardware-protected space for immutable boot code. |
Use Scenario: Storing dual firmware images (active/backup) and configuration tables in enterprise-grade Ethernet switches and firewalls. IC Role / Device Role / Timing Role: High-reliability flash memory supporting Write-Buffer Programming (1.75 μs/word) for fast failover image swaps. Use Value: Uniform 32KWord block erase (18 ms typical) enables deterministic firmware update windows under network SLA requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6402B-70I/CD | Uniform 32KWord boot block (top), no 4KWord sub-blocks; identical timing, voltage, and pinout. | Lacks per-sub-block protection in boot region; less suitable for applications requiring fine-grained boot code partitioning. | Select when top-boot architecture aligns with existing board layout and boot ROM mapping. |
| MX29LV640ETTI-70G | 64 Mbit x16, 70 ns, but uses different command set (non-CFI-compliant); 48-TSOP only, no TFBGA option. | Requires firmware driver modification; incompatible with CFI auto-detection in standard bootloader stacks. | Choose only if legacy TSOP footprint reuse is mandatory and software requalification is feasible. |
Compared with SST38VF6404B-70I/CD, SST39VF6402B-70I/CD offers identical performance but top-boot uniformity, while MX29LV640ETTI-70G sacrifices CFI compatibility and package flexibility for cost-sensitive designs where software stack control is retained.
Availability
SST38VF6404B-70I/CD is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, automotive infotainment boot loaders, and network router firmware image management requiring stable component supply across multi-year production cycles.
Supply support for SST38VF6404B-70I/CD 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 specializing in microcontrollers, analog devices, and memory solutions, with emphasis on reliability, longevity, and industrial-grade qualification.
The SST38VF6404B-70I/CD belongs to Microchip's Advanced MPF+ Flash family, designed specifically for embedded systems requiring secure, high-endurance, low-voltage nonvolatile storage with flexible protection schemes and real-time erase-suspend capability.
FAQ
What is the boot block configuration of SST38VF6404B-70I/CD?
The SST38VF6404B-70I/CD implements a bottom 4KWord boot block (Block B127), subdivided into eight 4KWord sub-blocks each with independent Volatile and Non-Volatile Block Protection (VPB/NVPB). This differs from uniform 32KWord blocks elsewhere and enables granular firmware security. The WP# pin provides hardware-level lock for this region when grounded, and the SST38VF6404B-70I/CD datasheet confirms this architecture in Table 3-2 (Sheet 1 of 2).
Does SST38VF6404B-70I/CD support CFI and JEDEC standards?
Yes, the SST38VF6404B-70I/CD is fully CFI (Common Flash Interface) compliant and adheres to JEDEC standard pinouts and command sets for x16 memories. This enables automatic detection by U-Boot, Linux MTD subsystems, and commercial flash programmers without custom driver development. The datasheet explicitly states "CFI Compliant" and "JEDEC Standard" in the Features section on page 1 of DS20005002D.
What package options are available for SST38VF6404B-70I/CD?
The SST38VF6404B-70I/CD is offered exclusively in a 48-ball TFBGA package (6 mm × 8 mm, 0.8 mm pitch), as confirmed in the "Packages Available" bullet on page 1 and Figure 2-2 of DS20005002D. It is not available in TSOP; the TSOP variant applies only to SST38VF6401B/6402B/6403B. The "/CD" suffix denotes the TFBGA configuration per Microchip's ordering guide.
How does Erase-Suspend work on SST38VF6404B-70I/CD?
The SST38VF6404B-70I/CD supports Erase-Suspend via the B0H command, pausing an active Block-Erase to allow reads or writes in unprotected blocks within 20 μs. DQ2 toggling indicates suspend status, and Erase-Resume (30H) resumes the operation. The datasheet specifies that suspend/resume is invalid during Chip-Erase and requires ≥200 μs hold time before re-suspending to avoid excessive cumulative erase time.
What is the purpose of the 128-bit Unique ID in SST38VF6404B-70I/CD?
The SST38VF6404B-70I/CD includes a factory-programmed, read-only 128-bit Unique ID used for device authentication, secure boot binding, and anti-cloning in regulated applications. It resides in a dedicated register space outside main memory array and is accessible via specific command sequences. This feature is documented in the Features list on page 1 of DS20005002D and referenced in Section 4.8.3 for DQ1 abort handling.
SST38VF6404B-70I/CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFBGA
- Packaging:
- Tray
- 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-TFBGA (6x8)
SST38VF6404B-70I/CD FAQ
1.How can I place an order for SST38VF6404B-70I/CD through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6404B-70I/CD 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 SST38VF6404B-70I/CD reliable?
The price and inventory of SST38VF6404B-70I/CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6404B-70I/CD is usually 5 days.
3.What payment methods are accepted for SST38VF6404B-70I/CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6404B-70I/CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6404B-70I/CD?
SST38VF6404B-70I/CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6404B-70I/CD 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 SST38VF6404B-70I/CD?
For technical support, including SST38VF6404B-70I/CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6404B-70I/CD requirements.
6.How does Aetrix verify that SST38VF6404B-70I/CD is sourced from the original manufacturer or authorized distributors?
All SST38VF6404B-70I/CD 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 SST38VF6404B-70I/CD meets industry standards.
7.What is the process for return or replacement of SST38VF6404B-70I/CD?
All SST38VF6404B-70I/CD units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6404B-70I/CD, 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 SST38VF6404B-70I/CD part is unused and in its original packaging.
Return procedure for SST38VF6404B-70I/CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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