My Inquiry
My Account
Microchip Technology SST25VF040B-80-4I-SAE-T
- Part No.:
- SST25VF040B-80-4I-SAE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SST25VF040B-80-4I-SAE-T.pdf
- Description:
- IC FLASH 4MBIT SPI 80MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,995
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST25VF040B-80-4I-SAE-T from Microchip Technology is a 4 Mbit (512 K × 8) SPI serial flash memory IC designed for embedded firmware storage, boot code retention, and configuration data in space-constrained systems. It operates at 2.7–3.6 V, supports up to 80 MHz high-speed read (0BH command), delivers 10 mA typical active read current, and features uniform 4 KByte sectors with 100,000 program/erase cycles endurance.
For engineers reviewing the SST25VF040B-80-4I-SAE-T datasheet, SST25VF040B-80-4I-SAE-T pinout, SST25VF040B-80-4I-SAE-T application, or SST25VF040B-80-4I-SAE-T equivalent, this page provides verified pin functions, industrial-grade (-40°C to +85°C) operation, SuperFlash reliability metrics, AAI programming timing, and real-world use cases in microcontroller boot loaders and FPGA configuration storage.
Technical Context
The SST25VF040B-80-4I-SAE-T implements a four-wire SPI interface compliant with Mode 0 and Mode 3 protocols, using CE#, SCK, SI, and SO signals for command/address/data transfer. Its internal SuperFlash architecture employs split-gate cells and thick-oxide tunneling injectors to achieve lower program current and faster erase times than conventional NOR flash.
It integrates hardware- and software-based end-of-write detection: BUSY bit polling via RDSR (05H) and optional RY/BY# status output on SO during AAI programming (enabled by EBSY 70H). Block protection is managed through BP3–BP0 bits in the status register, with BPL lock-down enabled when WP# is low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 K × 8), sufficient for full MCU boot images or FPGA configuration bitstreams |
| Max Clock Frequency | 80 MHz for High-Speed Read (0BH), enabling ≤12.5 ns per byte access in burst mode |
| Supply Voltage | 2.7–3.6 V single supply - compatible with 3.3 V logic domains without level shifting |
| Endurance | 100,000 program/erase cycles - supports frequent field firmware updates in industrial gateways |
| Data Retention | >100 years at +85°C - ensures long-term reliability in unattended infrastructure equipment |
| Erase Granularity | Uniform 4 KByte sectors, 32 KByte blocks, and 64 KByte blocks - enables flexible partitioning of boot vs. app storage |
| Active Read Current | 10 mA typical at 80 MHz - enables low-power operation in battery-backed IoT edge nodes |
Pinout & Package
Package: 8-lead SOIC (200 mils), RoHS-compliant, industrial temperature grade (-40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout command sequence; high-to-low transition initiates instruction latch |
| SCK | Serial Clock | Timing reference for SPI; rising edge latches SI input; falling edge outputs SO data; supports Mode 0 (idle low) and Mode 3 (idle high) |
| SI | Serial Data Input | Receives opcodes, addresses, and data; MSB-first; sampled on SCK rising edge |
| SO | Serial Data Output | Outputs read data or status; driven on SCK falling edge; reconfigurable as RY/BY# during AAI when EBSY (70H) issued |
| WP# | Write Protect | Enables BPL lock-down of status register; low = BP3–BP0 bits become read-only if BPL=1 |
| HOLD# | Hold | Suspends ongoing SPI transaction without deselecting device; maintains internal state; resumes on rising edge synchronized to SCK low |
| VDD | Power Supply | 2.7–3.6 V supply; powers core logic and memory array; decoupling capacitor required near pin |
| VSS | Ground | Reference return path for all I/O and core circuits; must be low-impedance connection to system ground plane |
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 when EBSY (70H) enabled - eliminates software polling overhead |
| Flexible Block Protection | BP3–BP0 bits configure protection for upper 1/8, 1/4, 1/2, or full 4 Mbit array - prevents accidental firmware overwrite |
| SuperFlash Technology | Split-gate cell design achieves 10× faster erase (18 ms sector) and lower energy per operation vs. standard NOR flash |
| Industrial Temperature Range | -40°C to +85°C operation validated - suitable for automotive body control modules and industrial PLCs |
Applications
| MCU Boot Memory | FPGA Configuration Storage |
|---|---|
|
Use Scenario: Stores boot loader and initial firmware image for ARM Cortex-M or RISC-V microcontrollers in medical diagnostic devices. IC Role / Device Role / Timing Role: Non-volatile boot memory accessed via SPI during power-on reset; supports fast 80 MHz high-speed read for sub-100 ms boot latency. Use Value: Eliminates external parallel NOR flash, reducing PCB area by 60% and enabling compact 4-layer board designs. |
Use Scenario: Holds configuration bitstream for Xilinx Artix-7 or Intel Cyclone V FPGAs in industrial vision systems. IC Role / Device Role / Timing Role: SPI master-initiated configuration load at power-up; leverages uniform 64 KByte block erase for safe partial reconfiguration. Use Value: Enables field-upgradable FPGA logic without requiring JTAG programmers - reduces service downtime by 90%. |
| Wireless Module Firmware | Smart Sensor Calibration Data |
|
Use Scenario: Stores OTA-updatable protocol stack (BLE/Zigbee) and radio calibration tables in battery-powered wireless sensor nodes. IC Role / Device Role / Timing Role: Dual-role memory: executes high-speed read during normal operation and supports AAI programming during firmware update. Use Value: Achieves 7 µs byte-program time and 5 µA standby current - extends coin-cell battery life to >5 years. |
Use Scenario: Retains factory-trimmed sensor offset/gain coefficients and environmental compensation curves in automotive cabin air quality sensors. IC Role / Device Role / Timing Role: Write-once-read-many (WORM) storage protected by BP bits; accessed during sensor initialization. Use Value: Guarantees data integrity over 15+ year vehicle lifetime with >100-year retention at +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI serial flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q40EW | 4 Mbit density, 104 MHz max clock, Quad SPI support, 1.65–1.95 V or 2.7–3.6 V dual supply | Requires Quad SPI controller; lacks HOLD#/WP# pin-level compatibility; different status register layout | Select for higher throughput in new designs with Quad SPI host; not drop-in for legacy SST25VF040B-80-4I-SAE-T layouts |
| Micron MT25QL04A | 4 Mbit, 133 MHz, Octal DTR capable, 2.7–3.6 V, supports SFDP for auto-configuration | Pin-compatible but requires updated driver for SFDP parsing and enhanced security registers | Preferred for scalable future-proofing where migration to larger densities (e.g., 8–64 Mbit) is planned |
Compared with SST25VF040B-80-4I-SAE-T, W25Q40EW offers higher bandwidth but demands hardware and firmware changes, while MT25QL04A provides seamless pinout continuity and advanced configuration flexibility at the cost of increased driver complexity.
Availability
SST25VF040B-80-4I-SAE-T is available at Aetrix Electronics and suitable for industrial control panels, automotive telematics modules, and medical imaging subsystems requiring stable component supply across extended product lifecycles.
Supply support for SST25VF040B-80-4I-SAE-T 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 deep expertise in embedded control and secure connectivity.
The SST25VF040B-80-4I-SAE-T belongs to Microchip's legacy SST25 serial flash product line, engineered specifically for cost-sensitive, space-constrained embedded systems needing reliable non-volatile storage with minimal pin count and low power.
FAQ
What is the maximum operating frequency of SST25VF040B-80-4I-SAE-T for high-speed read operations?
The SST25VF040B-80-4I-SAE-T supports up to 80 MHz for High-Speed Read (0BH command), as confirmed by its "-80" speed grade suffix and the DS25051A datasheet Section 11. This enables continuous burst reads with effective throughput of ~10 MB/s, significantly faster than standard 25 MHz SPI flash variants. The 80 MHz rating applies only to High-Speed Read mode and requires proper signal integrity layout.
Does SST25VF040B-80-4I-SAE-T support both SPI Mode 0 and Mode 3?
Yes, SST25VF040B-80-4I-SAE-T explicitly supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), as stated in the "Features" section and Section 5 of DS25051A. The device samples SI on the rising edge and drives SO on the falling edge in both modes, differing only in SCK idle state - low for Mode 0, high for Mode 3.
What is the purpose of the HOLD# pin on SST25VF040B-80-4I-SAE-T?
The HOLD# pin on SST25VF040B-80-4I-SAE-T suspends an ongoing SPI transaction without deselecting the device or resetting internal state. When activated (low), it places SO in high-impedance while preserving CE# active and SCK/SI states, allowing the host to service higher-priority interrupts and resume communication seamlessly. This is critical for real-time systems where deterministic SPI latency is required.
How does the Auto Address Increment (AAI) feature improve programming efficiency in SST25VF040B-80-4I-SAE-T?
The AAI feature in SST25VF040B-80-4I-SAE-T eliminates the need to resend the address for each subsequent word during sequential programming. After issuing the initial ADH command and two data bytes, the internal address pointer auto-increments, allowing continuous 2-byte writes with only the ADH opcode - reducing instruction overhead by ~60% versus standard Byte-Program mode and cutting total programming time for large firmware images.
What industrial temperature range does SST25VF040B-80-4I-SAE-T support?
SST25VF040B-80-4I-SAE-T is rated for the industrial temperature range of -40°C to +85°C, as indicated by the "I" in its part number suffix and confirmed in Section 1 of DS25051A. This qualification ensures reliable operation in harsh environments such as factory automation controllers, outdoor telecom equipment, and automotive under-hood modules.
SST25VF040B-80-4I-SAE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 80 MHz
- Write Cycle Time - Word, Page:
- 10µs
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SST25VF040B-80-4I-SAE-T FAQ
1.How can I place an order for SST25VF040B-80-4I-SAE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF040B-80-4I-SAE-T 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-80-4I-SAE-T reliable?
The price and inventory of SST25VF040B-80-4I-SAE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST25VF040B-80-4I-SAE-T is usually 5 days.
3.What payment methods are accepted for SST25VF040B-80-4I-SAE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF040B-80-4I-SAE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF040B-80-4I-SAE-T?
SST25VF040B-80-4I-SAE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF040B-80-4I-SAE-T 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-80-4I-SAE-T?
For technical support, including SST25VF040B-80-4I-SAE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF040B-80-4I-SAE-T requirements.
6.How does Aetrix verify that SST25VF040B-80-4I-SAE-T is sourced from the original manufacturer or authorized distributors?
All SST25VF040B-80-4I-SAE-T 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-80-4I-SAE-T meets industry standards.
7.What is the process for return or replacement of SST25VF040B-80-4I-SAE-T?
All SST25VF040B-80-4I-SAE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF040B-80-4I-SAE-T, 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-80-4I-SAE-T part is unused and in its original packaging.
Return procedure for SST25VF040B-80-4I-SAE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST25VF040B-80-4I-SAE-T Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
