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Microchip Technology SST25VF040B-50-4C-ZAE
- Part No.:
- SST25VF040B-50-4C-ZAE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFBGA, CSPBGA
- Datasheet:
-
SST25VF040B-50-4C-ZAE.pdf
- Description:
- IC FLASH 4MBIT SPI 50MHZ 8CSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,915
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Product details
Overview
SST25VF040B-50-4C-ZAE from Microchip Technology is a 4-Mbit SPI serial Flash memory IC with single-supply operation (2.7V–3.6V), SPI Mode 0/3 compatibility, and 50 MHz high-speed read capability. It features uniform 4-Kbyte sectors, 32-Kbyte and 64-Kbyte overlay blocks, and Auto Address Increment (AAI) programming for accelerated firmware updates in embedded microcontroller boot storage applications.
For engineers reviewing the SST25VF040B-50-4C-ZAE datasheet, SST25VF040B-50-4C-ZAE pinout, SST25VF040B-50-4C-ZAE application, or SST25VF040B-50-4C-ZAE equivalent, key selection criteria include its commercial temperature range (0°C to +70°C), WSON-8 (6 mm × 5 mm) package, 100,000-cycle endurance, and hardware/software write protection via WP# and STATUS register BP bits.
Technical Context
The SST25VF040B-50-4C-ZAE implements a four-wire SPI interface with dual-mode clock polarity support (Mode 0 and Mode 3), enabling interoperability with diverse host controllers. Its SuperFlash® technology uses split-gate cells and thick-oxide tunneling for enhanced reliability over conventional NOR Flash.
It supports three erase granularities-4-Kbyte sectors, 32-Kbyte blocks, and 64-Kbyte blocks-and provides two end-of-write detection methods: software polling of the BUSY bit and hardware RY/BY# status output on SO during AAI programming via EBSY/DBSY commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 Kbytes), organized as uniform 4-Kbyte sectors |
| Supply Voltage | 2.7V–3.6V - enables direct connection to 3.3V logic without level shifting |
| Max Clock Frequency | 50 MHz - supports high-throughput firmware reads in real-time systems |
| Endurance | 100,000 program/erase cycles - suitable for field-upgradable code storage |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage |
| Active Read Current | 10 mA typical - minimizes power draw during boot code fetch |
| Standby Current | 5 µA typical - critical for low-power sleep modes in battery-operated devices |
| Operating Temp | 0°C to +70°C - certified for commercial-grade industrial control and consumer electronics |
Pinout & Package
Package: 8-contact WSON (6 mm × 5 mm), RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout command sequences |
| SO | Serial Data Output | Outputs data on SCK falling edge; reconfigurable as RY/BY# during AAI mode |
| WP# | Write-Protect | Enables/disables STATUS register lock-down (BPL bit) for permanent block protection |
| VSS | Ground | Reference return path for all digital and analog circuitry |
| VDD | Power Supply | Single 2.7V–3.6V supply for core and I/O operations |
| HOLD# | Hold Control | Suspends ongoing SPI transaction without resetting internal address pointer or state |
| SCK | Serial Clock | Timing reference; rising edge latches input (SI), falling edge outputs data (SO) |
| SI | Serial Data Input | Accepts commands, addresses, and data MSb-first under CE# and SCK control |
Key Features
| Feature | Design Value |
|---|---|
| Auto Address Increment (AAI) Programming | Reduces total programming time by eliminating repeated address transmission for sequential word writes |
| Hardware End-of-Write Detection | SO pin outputs RY/BY# status during AAI mode (enabled via EBSY command), removing software polling overhead |
| Flexible Block Protection | Four BP bits (BP3–BP0) enable software-selectable protection of upper 1/16 to full 4-Mbit array, with lock-down via BPL bit |
| Uniform Erase Architecture | Independent 4-Kbyte sector, 32-Kbyte block, and 64-Kbyte block erase options simplify partitioning of code, config, and log data |
| Low-Power Standby | 5 µA typical current allows persistent retention during extended host sleep without compromising battery life |
Applications
| Microcontroller Boot Storage | Firmware Update Storage |
|---|---|
Use Scenario: Storing primary bootloader and application firmware for ARM Cortex-M or PIC32 microcontrollers. IC Role / Device Role / Timing Role: Non-volatile code storage accessed via SPI during cold start and reset sequences. Use Value: 50 MHz high-speed read enables sub-100 ms boot times; 4-Kbyte sector erase allows safe in-field firmware patching without full chip erase. | Use Scenario: Holding delta updates or full firmware images downloaded over CAN, UART, or wireless interfaces. IC Role / Device Role / Timing Role: Field-upgradable code repository supporting atomic update rollback via dual-bank emulation. Use Value: AAI programming cuts flash write time by >40% vs. byte-program mode; 100,000-cycle endurance supports 5+ years of quarterly updates. |
| Industrial HMI Configuration | IoT Edge Device Parameter Storage |
Use Scenario: Persisting display layouts, language packs, calibration tables, and user preferences in human-machine interface panels. IC Role / Device Role / Timing Role: SPI-connected configuration memory with hardware write protection against accidental corruption. Use Value: WP#-enabled BPL lock-down prevents runtime modification of factory-set parameters; 64-Kbyte block erase isolates UI assets from system settings. | Use Scenario: Storing sensor calibration coefficients, network credentials, and OTA update metadata in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Low-energy non-volatile storage accessed intermittently during wake-up cycles. Use Value: 5 µA standby current extends 2-AA battery life beyond 5 years; HOLD# pin enables seamless SPI suspension during RF transmission bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DF041-SSH-T | 4-Mbit density, 85 MHz max clock, 2.7V–3.6V, but uses different status register map and lacks AAI mode | Higher read throughput but no hardware RY/BY# output; requires firmware adaptation for status polling | Preferred when maximum read speed is critical and AAI programming is unused |
| W25Q40EWUXIE | 4-Mbit density, 104 MHz quad SPI, 1.65V–3.6V, supports QPI/DTR modes, includes 4-Kbyte sectors and 64-Kbyte blocks | Quad I/O capability doubles effective bandwidth; lower VMIN enables direct use with 1.8V hosts | Recommended for new designs requiring future scalability to higher densities or multi-I/O interfaces |
Compared with AT25DF041-SSH-T and W25Q40EWUXIE, the SST25VF040B-50-4C-ZAE offers deterministic 50 MHz SPI timing, proven AAI acceleration for sequential writes, and simpler status register logic - making it ideal for cost-sensitive, resource-constrained MCU boot applications where pin count and firmware complexity are prioritized.
Availability
SST25VF040B-50-4C-ZAE is available at Aetrix Electronics and suitable for industrial HMI panels, IoT edge sensor nodes, microcontroller-based motor drives, and consumer audio systems requiring stable component supply across multi-year production cycles.
Supply support for SST25VF040B-50-4C-ZAE 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 for embedded control applications.
The SST25VF040B-50-4C-ZAE belongs to Microchip's 25-series Serial Flash product line, designed specifically for reliable, low-pin-count code and configuration storage in space-constrained, cost-sensitive embedded systems.
FAQ
What is the package type and footprint of the SST25VF040B-50-4C-ZAE?
The SST25VF040B-50-4C-ZAE uses an 8-contact WSON package measuring 6 mm × 5 mm with exposed pad. It is RoHS-compliant and rated at moisture sensitivity level 3. This compact footprint reduces PCB area versus SOIC variants while maintaining standard SPI pinout compatibility.
Does the SST25VF040B-50-4C-ZAE support both SPI Mode 0 and Mode 3?
Yes, the SST25VF040B-50-4C-ZAE explicitly supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1), as confirmed in Section 4.0 of the DS20005051E datasheet. This dual-mode capability ensures interoperability with a wide range of microcontroller SPI peripherals without requiring hardware modifications.
How does Auto Address Increment (AAI) programming improve efficiency in the SST25VF040B-50-4C-ZAE?
AAI programming in the SST25VF040B-50-4C-ZAE eliminates the need to resend the address for each subsequent word write. After issuing the initial ADH command and first two-byte payload, consecutive AAI commands program the next sequential word - reducing instruction overhead and cutting total programming time by up to 45% compared to standard byte-program mode.
What write protection mechanisms does the SST25VF040B-50-4C-ZAE provide?
The SST25VF040B-50-4C-ZAE provides layered write protection: hardware-level via the WP# pin (enabling BPL lock-down), and software-level via BP3–BP0 bits in the STATUS register. When WP# is low and BPL = 1, the BP bits become read-only, preventing runtime alteration of protected memory regions - a critical feature for safeguarding boot code.
Can the SST25VF040B-50-4C-ZAE operate at 50 MHz for both read and write operations?
No - the 50 MHz rating applies only to High-Speed Read (0BH command). Write operations (program/erase) have slower timing: Byte Program takes 7 µs typical, Sector Erase 18 ms typical, and Chip Erase 35 ms typical. The 50 MHz clock is used exclusively for high-bandwidth data reads, not for command execution or write cycles.
SST25VF040B-50-4C-ZAE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-UFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 50 MHz
- Write Cycle Time - Word, Page:
- 10µs
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-CSP
SST25VF040B-50-4C-ZAE FAQ
1.How can I place an order for SST25VF040B-50-4C-ZAE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF040B-50-4C-ZAE 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 SST25VF040B-50-4C-ZAE reliable?
The price and inventory of SST25VF040B-50-4C-ZAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST25VF040B-50-4C-ZAE is usually 5 days.
3.What payment methods are accepted for SST25VF040B-50-4C-ZAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF040B-50-4C-ZAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF040B-50-4C-ZAE?
SST25VF040B-50-4C-ZAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF040B-50-4C-ZAE 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 SST25VF040B-50-4C-ZAE?
For technical support, including SST25VF040B-50-4C-ZAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF040B-50-4C-ZAE requirements.
6.How does Aetrix verify that SST25VF040B-50-4C-ZAE is sourced from the original manufacturer or authorized distributors?
All SST25VF040B-50-4C-ZAE 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 SST25VF040B-50-4C-ZAE meets industry standards.
7.What is the process for return or replacement of SST25VF040B-50-4C-ZAE?
All SST25VF040B-50-4C-ZAE units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF040B-50-4C-ZAE, 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 SST25VF040B-50-4C-ZAE part is unused and in its original packaging.
Return procedure for SST25VF040B-50-4C-ZAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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