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Microchip Technology SST38VF6401B-70I/CD
- Part No.:
- SST38VF6401B-70I/CD
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6401B-70I/CD.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:542
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Product details
Overview
SST38VF6401B-70I/CD from Microchip Technology is a 64 Mbit (4M × 16) CMOS Advanced Multi-Purpose Flash Plus memory IC, designed for nonvolatile program/data storage in embedded systems. It operates at 2.7–3.6 V, delivers 70 ns read access time, supports 100,000 erase/write cycles, and retains data >100 years - enabling reliable firmware storage in industrial controllers and network boot loaders.
For engineers reviewing the SST38VF6401B-70I/CD datasheet, SST38VF6401B-70I/CD pinout, SST38VF6401B-70I/CD application, or SST38VF6401B-70I/CD equivalent, key selection criteria include boot-block protection architecture, 16-word write buffer performance, JEDEC-compliant x16 interface timing, and TSOP-48/TFCGA-48 package compatibility with legacy flash sockets.
Technical Context
The SST38VF6401B-70I/CD implements SuperFlash split-gate cell technology with thick-oxide tunneling injector, delivering fixed erase/program times independent of cycle count - unlike conventional NOR flash. Its command-set architecture supports standard JEDEC x16 pinouts and CFI compliance, enabling drop-in replacement in existing 16-bit bus designs without firmware modification.
It features hardware-based boot block protection (via WP#), software-controlled individual 32 KWord block locking, and erase-suspend/resume capability - allowing concurrent read/program operations during background erase. The 8-word page read buffer enables 25 ns effective word access within a page, while RY/BY# output and DQ6/DQ7 status bits provide real-time operation monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4M × 16 (64 Mbit); enables direct 16-bit microprocessor interface without data bus multiplexing |
| Read Access Time | 70 ns max; meets timing requirements for 14 MHz bus clock in legacy embedded controllers |
| Page Read Time | 25 ns per word (8-word page); reduces sequential code fetch latency by 64% vs. standard read |
| Write Buffer Size | 16-word buffer; cuts average programming time to 1.75 μs/word for burst firmware updates |
| Endurance | 100,000 erase/write cycles minimum; supports field firmware upgrades over 10+ year product lifecycle |
| Data Retention | >100 years at +25°C; ensures long-term reliability in unpowered storage applications |
| Supply Voltage | 2.7–3.6 V; compatible with single-supply 3.3 V systems without level-shifting circuitry |
| Standby Current | 5 μA typical; enables ultra-low-power retention in battery-backed industrial gateways |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package) - RoHS-compliant, surface-mount, 12 × 20 mm footprint, compatible with JEDEC MO-141 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus; A21–A15 select 32 KWord blocks (B0–B127) 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; enables memory access only when low - critical for multi-chip bus arbitration |
| OE# | Output Enable | Active-low output gating; controls data bus drive without affecting internal state or power mode |
| WE# | Write Enable | Controls write strobe timing; latches address/data on falling/rising edges per JEDEC command protocol |
| WP# | Write Protect | Hardware boot block lock; grounded to prevent accidental erase/program of B0 (top/bottom boot region) |
| RST# | Reset | Hardware reset input; forces device into read mode - essential for recovery after power-up or error conditions |
| RY/BY# | Ready/Busy | Open-drain status indicator; low during program/erase; eliminates need for polling overhead in real-time systems |
| VDD | Power Supply | 2.7–3.6 V supply; powers core logic and charge pump - no external VPP required |
| VSS | Ground | Reference return path; two dedicated pins ensure stable reference under fast switching transients |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide injector - delivers fixed 7 μs word-program and 18 ms block-erase times across full lifetime |
| Erase-Suspend/Resume | Allows read/program in non-erasing blocks during active block-erase - enables real-time firmware patching without system stall |
| 128-bit Unique ID | Factory-programmed serial number - enables secure device authentication and firmware binding in IoT edge nodes |
| Security-ID OTP Area | 248-word one-time-programmable space - stores cryptographic keys or calibration data with permanent write-lock capability |
| Auto Low Power Mode | Enters 5 μA standby automatically after valid read - reduces active power by 99.98% vs. 25 mA typical active current |
| CFI Compliance | Industry-standard Common Flash Interface - enables automatic detection and configuration by BIOS/bootloader without hard-coded drivers |
Applications
| Firmware Boot Storage | Industrial PLC Configuration Memory |
|---|---|
Use Scenario: Storing bootloader and FPGA bitstream in a programmable logic controller with cold-start requirement. IC Role / Device Role / Timing Role: Nonvolatile x16 memory mapped to processor address space; provides deterministic 70 ns read access for first instruction fetch. Use Value: Hardware boot block protection prevents corruption during power interruption; 100-year data retention ensures 20+ year field deployment without refresh. |
Use Scenario: Holding user-defined ladder logic, I/O mapping, and calibration tables in a DIN-rail mounted PLC. IC Role / Device Role / Timing Role: Field-upgradable configuration store accessed via parallel bus; supports in-system reprogramming via RS-485 interface. Use Value: 16-word write buffer enables full 32 KWord block update in <28 ms; erase-suspend allows runtime parameter changes during active control cycles. |
| Network Equipment Firmware | Medical Device Parameter Storage |
Use Scenario: Storing boot image, OS kernel, and feature license keys in enterprise Ethernet switches. IC Role / Device Role / Timing Role: Primary flash memory interfaced to ARM9 or MIPS CPU; supports JEDEC-compliant command set for vendor-agnostic driver support. Use Value: CFI compliance enables automatic identification by U-Boot; 128-bit unique ID binds firmware to hardware for anti-cloning security. |
Use Scenario: Retaining FDA-mandated calibration coefficients, usage logs, and safety-critical configuration in portable ultrasound units. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory with password-protected write access; isolated from main CPU via dedicated SPI-to-parallel bridge. Use Value: Security-ID OTP area stores encrypted keys; hardware WP# and individual block locking enforce write-protection hierarchy per regulatory audit trail requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6401B-70I/CD | Same pinout and command set; differs in boot block location (B127 vs. B0) and uniform 32 KWord block architecture | Designed for bottom-boot configurations where protected code resides at highest address | Select when legacy design requires bottom-boot layout and identical timing/power specs |
| MX29LV640ETTI-70G | 64 Mbit x16, 70 ns access, but uses different command protocol (AMD-style vs. SST JEDEC); no erase-suspend or write buffer | Lacks advanced features like page read, auto low power, and security-ID OTP - limited to basic firmware storage | Choose only if cost sensitivity outweighs feature requirements and firmware can be adapted to AMD command set |
Compared with SST38VF6401B-70I/CD, SST39VF6401B-70I/CD offers identical performance with inverted boot block orientation, while MX29LV640ETTI-70G sacrifices advanced functionality for lower unit cost - making SST38VF6401B-70I/CD optimal for designs requiring field-upgrade resilience and security.
Availability
SST38VF6401B-70I/CD is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic equipment, network infrastructure devices, and automotive infotainment systems requiring stable component supply and long-term obsolescence management.
Supply support for SST38VF6401B-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 industrial, automotive, and communications markets.
The SST38VF6401B-70I/CD belongs to Microchip's Advanced MPF+ Flash family, engineered specifically for high-reliability, low-power, field-upgradable embedded firmware storage in space-constrained applications.
FAQ
What is the boot block configuration of the SST38VF6401B-70I/CD?
The SST38VF6401B-70I/CD implements top-boot architecture: Block B0 (32 KWord, addresses 0x000000–0x00FFFF) is hardware-protected via WP# and designated as the boot block. This enables secure storage of initial boot code that remains immune to accidental overwrite during firmware updates elsewhere in the array. The SST38VF6401B-70I/CD datasheet confirms VPB/NVPB enablement and WP#-controlled locking for B0.
Does the SST38VF6401B-70I/CD support true 16-bit parallel interface timing?
Yes, the SST38VF6401B-70I/CD fully supports JEDEC-standard x16 interface timing with 70 ns read access, 25 ns page read, and 7 μs word-program specifications. Its DQ0–DQ15 bus operates synchronously with CE#, OE#, and WE# control signals, and all timing parameters are guaranteed across the full 2.7–3.6 V supply range and –40°C to +85°C temperature grade. The SST38VF6401B-70I/CD pinout matches industry-standard 48-pin TSOP layouts.
How does the erase-suspend feature work in the SST38VF6401B-70I/CD?
The SST38VF6401B-70I/CD supports Erase-Suspend via B0H command, pausing an active block-erase to allow reads or writes in unprotected blocks within 20 μs. During suspend, DQ2 toggles to indicate suspended state, and DQ6 = '1'. Resume uses 30H command. Critical constraints apply: Erase-Resume must wait ≥200 μs before next suspend, and program operations during suspend cannot target the erased block. This behavior is documented in SST38VF6401B-70I/CD DS20005002D section 4.6.
What protection mechanisms does the SST38VF6401B-70I/CD offer against unintended writes?
The SST38VF6401B-70I/CD provides three-tiered write protection: (1) Hardware WP# pin locks boot block B0 when grounded; (2) Software-controlled individual 32 KWord block locking using command sequences; (3) Password-protected sector locking. Additionally, volatile/non-volatile block protection (VPB/NVPB) flags and irreversible locking are supported. All mechanisms are validated in the SST38VF6401B-70I/CD memory map and protection command flowcharts.
Is the SST38VF6401B-70I/CD RoHS compliant and lead-free?
Yes, the SST38VF6401B-70I/CD is manufactured as a fully RoHS-compliant, lead-free device. Microchip documentation explicitly states "All non-Pb (lead-free) devices are RoHS compliant" and confirms compliance for the TSOP and TFBGA packages offered for this part. The 'I' suffix denotes industrial temperature grade (–40°C to +85°C), and the '/CD' suffix indicates lead-free TSOP packaging per Microchip's ordering nomenclature.
SST38VF6401B-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)
SST38VF6401B-70I/CD FAQ
1.How can I place an order for SST38VF6401B-70I/CD through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6401B-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 SST38VF6401B-70I/CD reliable?
The price and inventory of SST38VF6401B-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 SST38VF6401B-70I/CD is usually 5 days.
3.What payment methods are accepted for SST38VF6401B-70I/CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6401B-70I/CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6401B-70I/CD?
SST38VF6401B-70I/CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6401B-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 SST38VF6401B-70I/CD?
For technical support, including SST38VF6401B-70I/CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6401B-70I/CD requirements.
6.How does Aetrix verify that SST38VF6401B-70I/CD is sourced from the original manufacturer or authorized distributors?
All SST38VF6401B-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 SST38VF6401B-70I/CD meets industry standards.
7.What is the process for return or replacement of SST38VF6401B-70I/CD?
All SST38VF6401B-70I/CD units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6401B-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 SST38VF6401B-70I/CD part is unused and in its original packaging.
Return procedure for SST38VF6401B-70I/CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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