My Inquiry
My Account
Microchip Technology SST25VF512A-33-4I-SAE-T
- Part No.:
- SST25VF512A-33-4I-SAE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SST25VF512A-33-4I-SAE-T.pdf
- Description:
- IC FLASH 512KBIT SPI 33MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,564
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST25VF512A-33-4I-SAE-T from Microchip Technology is a 512 Kbit SPI serial flash memory IC designed for embedded firmware storage and configuration data retention in space-constrained systems. It operates at 2.7–3.6 V, supports up to 33 MHz clock frequency, features 4 KByte uniform sectors and 32 KByte overlay blocks, and delivers 100,000 program/erase cycles with >100 years data retention - deployed in industrial microcontroller boot loaders and IoT sensor node parameter storage.
For engineers reviewing the SST25VF512A-33-4I-SAE-T datasheet, SST25VF512A-33-4I-SAE-T pinout, SST25VF512A-33-4I-SAE-T application, or SST25VF512A-33-4I-SAE-T equivalent, key selection considerations include SPI Mode 0/3 compatibility, industrial temperature range (−40°C to +85°C), SOIC-8 package footprint, software/hardware write protection architecture, and Auto Address Increment (AAI) programming efficiency.
Technical Context
The SST25VF512A-33-4I-SAE-T implements a four-wire SPI interface (SCK, SI, SO, CE#) with dual-mode support (Mode 0 and Mode 3), enabling interoperability with diverse host controllers without protocol translation. Its SuperFlash technology uses split-gate cells and thick-oxide tunneling injectors to achieve faster erase times (18 ms sector-erase) and lower active current (7 mA typical) versus conventional NOR flash.
Internal logic includes a software status register with BUSY, WEL, BP0/BP1, BPL, and AAI bits - enabling real-time operation monitoring, flexible block-level write protection, and lock-down capability via WP# pin. HOLD# allows non-disruptive suspension of ongoing serial transfers, preserving address pointer state across pauses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64 KByte), organized as 16 × 4 KByte sectors |
| Max Clock Frequency | 33 MHz - enables high-speed read access (e.g., 33 MHz High-Speed-Read mode) |
| Supply Voltage | 2.7–3.6 V - single-supply operation compatible with 3.3 V system rails |
| Endurance | 100,000 program/erase cycles - supports frequent field firmware updates |
| Data Retention | >100 years at +25°C - ensures long-term reliability in unpowered storage |
| Operating Temp | −40°C to +85°C (Industrial grade) - validated for harsh environmental deployment |
| Active Read Current | 7 mA typical - minimizes power draw during boot code fetch |
| Standby Current | 8 µA typical - enables ultra-low-power sleep modes in battery-operated devices |
Pinout & Package
Package: 8-lead SOIC (150 mil body width), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout command sequences |
| SO | Serial Data Output | Tri-state output; data shifted out on falling edge of SCK (SPI Mode 0/3) |
| WP# | Write Protect | Enables/disables status register lock-down (BPL bit) and hardware write inhibit |
| VSS | Ground | Reference return path for all digital and analog circuitry |
| VDD | Power Supply | 2.7–3.6 V supply input; decoupling capacitor required per layout guidelines |
| HOLD# | Hold Control | Suspends ongoing SPI transfer without resetting internal address pointer or clock state |
| SCK | Serial Clock | Timing reference; rising edge latches input (SI), falling edge clocks output (SO) |
| SI | Serial Data Input | Command, address, and data input; sampled on rising edge of SCK |
Key Features
| Feature | Design Value |
|---|---|
| Auto Address Increment (AAI) | Reduces total programming time by eliminating repeated address transmission for sequential byte writes |
| Flexible Erase Granularity | Supports sector (4 KByte), block (32 KByte), and chip-wide erase - enabling selective firmware patching |
| Dual SPI Mode Support | Compatible with both Mode 0 (SCK idle low) and Mode 3 (SCK idle high) - simplifies integration with varied MCU SPI peripherals |
| Hardware + Software Write Protection | WP# pin controls BPL lock-down; BP0/BP1 bits configure protected memory regions (0–100% array) |
| End-of-Write Detection | Software-pollable BUSY bit in status register eliminates need for fixed timing delays in firmware |
| Low-Power Standby | 8 µA typical standby current enables energy-sensitive applications like wireless sensor nodes |
Applications
| Firmware Boot Storage | Configuration Parameter Storage |
|---|---|
Use Scenario: Stores bootloader and application firmware for ARM Cortex-M microcontrollers in industrial PLCs. IC Role / Device Role / Timing Role: Non-volatile code storage accessed via SPI during cold start; supports fast read and in-field update. Use Value: 33 MHz read speed reduces boot latency; 100K endurance accommodates regular firmware upgrades over product lifetime. |
Use Scenario: Holds calibration coefficients, network credentials, and user preferences in smart metering endpoints. IC Role / Device Role / Timing Role: Persistent configuration memory updated infrequently but requiring guaranteed retention across power cycles. Use Value: >100-year data retention ensures accuracy over 15+ year deployments; software write protection prevents accidental corruption. |
| IoT Edge Device Logging | Medical Diagnostic Instrument Settings |
Use Scenario: Captures timestamped sensor readings and error logs in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Low-power data logger using AAI programming to batch-write sequential samples. Use Value: 8 µA standby current extends battery life; 4 KByte sector erase enables efficient log rotation without full chip erase. |
Use Scenario: Stores FDA-mandated device calibration history and operator audit trails in portable ultrasound units. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration archive with hardware (WP#) and software (BPL) lock-down. Use Value: Block-protection bits prevent unauthorized modification; industrial temp rating ensures reliability inside sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DF041A-SSH-T | 4 Mbit density (8× larger), 85 MHz max clock, different status register map and protection scheme | Higher capacity suits larger firmware images; not drop-in due to timing and command set differences | Select when >512 Kbit storage is required and host firmware can accommodate Atmel-specific instructions |
| W25Q80DVSSIG | 8 Mbit density, Quad SPI support, 104 MHz DTR mode, different sector/block layout (4 KByte/64 KByte) | Enables faster throughput and smaller footprint via QPI; requires Quad-capable controller and updated driver stack | Choose for next-gen designs needing higher bandwidth or future scalability; not pin- or command-compatible |
Compared with AT25DF041A-SSH-T and W25Q80DVSSIG, the SST25VF512A-33-4I-SAE-T offers optimal balance of proven industrial reliability, minimal board space (SOIC-8), and straightforward SPI Mode 0/3 integration - ideal for cost-sensitive, long-lifecycle embedded systems where 512 Kbit suffices.
Availability
SST25VF512A-33-4I-SAE-T is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and IoT edge sensors requiring stable component supply and long-term manufacturability.
Supply support for SST25VF512A-33-4I-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 delivering microcontrollers, analog, FPGA, and memory solutions with emphasis on reliability, longevity, and embedded system integration.
The SST25VF512A-33-4I-SAE-T belongs to Microchip's legacy serial flash portfolio derived from Silicon Storage Technology (SST), engineered specifically for cost-effective, low-pin-count firmware and configuration storage in industrial and automotive-adjacent applications.
FAQ
What is the operating temperature range for the SST25VF512A-33-4I-SAE-T?
The SST25VF512A-33-4I-SAE-T is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the official DS25090A datasheet under "Temperature Range" and applies directly to the -I grade suffix in the part number. The device undergoes full characterization across this range for timing, voltage, and endurance parameters.
Does the SST25VF512A-33-4I-SAE-T support Quad SPI mode?
No, the SST25VF512A-33-4I-SAE-T does not support Quad SPI (QSPI). It implements a standard four-wire SPI interface (SCK, SI, SO, CE#) with dual-mode compatibility (SPI Mode 0 and Mode 3) only. Quad-capable variants such as the W25Q series use additional I/O pins (IO2/IO3) not present or functional in the SST25VF512A-33-4I-SAE-T pinout.
How is write protection implemented on the SST25VF512A-33-4I-SAE-T?
The SST25VF512A-33-4I-SAE-T implements layered write protection: hardware-level inhibition via the WP# pin (enabling BPL lock-down), and software-configurable block protection via BP0/BP1 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.
What is the significance of the "-SAE-T" suffix in SST25VF512A-33-4I-SAE-T?
The "-SAE-T" suffix denotes packaging and compliance: "S" = SOIC package, "A" = standard lead finish, "E" = RoHS-compliant (Pb-free), and "T" = tape-and-reel packaging. This matches Microchip's official ordering code convention for the SST25VF512A-33-4I variant and confirms the 8-lead SOIC (150 mil) physical form factor.
Can the SST25VF512A-33-4I-SAE-T be used as a direct replacement for the SST25VF512A-33-4C-SAE-T?
No - the SST25VF512A-33-4I-SAE-T (industrial −40°C to +85°C) is not a direct replacement for the SST25VF512A-33-4C-SAE-T (commercial 0°C to +70°C) in temperature-critical applications. While pinout, command set, and electrical specs are identical, the industrial-grade version undergoes extended temperature screening and qualification; substituting without thermal validation may risk failure outside 0°C–70°C.
SST25VF512A-33-4I-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:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 33 MHz
- Write Cycle Time - Word, Page:
- 20µs
- 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
SST25VF512A-33-4I-SAE-T FAQ
1.How can I place an order for SST25VF512A-33-4I-SAE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF512A-33-4I-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 SST25VF512A-33-4I-SAE-T reliable?
The price and inventory of SST25VF512A-33-4I-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 SST25VF512A-33-4I-SAE-T is usually 5 days.
3.What payment methods are accepted for SST25VF512A-33-4I-SAE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF512A-33-4I-SAE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF512A-33-4I-SAE-T?
SST25VF512A-33-4I-SAE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF512A-33-4I-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 SST25VF512A-33-4I-SAE-T?
For technical support, including SST25VF512A-33-4I-SAE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF512A-33-4I-SAE-T requirements.
6.How does Aetrix verify that SST25VF512A-33-4I-SAE-T is sourced from the original manufacturer or authorized distributors?
All SST25VF512A-33-4I-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 SST25VF512A-33-4I-SAE-T meets industry standards.
7.What is the process for return or replacement of SST25VF512A-33-4I-SAE-T?
All SST25VF512A-33-4I-SAE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF512A-33-4I-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 SST25VF512A-33-4I-SAE-T part is unused and in its original packaging.
Return procedure for SST25VF512A-33-4I-SAE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST25VF512A-33-4I-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…
