Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology SST25VF512A-33-4C-SAE-T

Name: SST25VF512A-33-4C-SAE-T
Brand: Microchip Technology
SKU: SST25VF512A-33-4C-SAE-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SST25VF512A-33-4C-SAE-T

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: SST25VF512A-33-4C-SAE-T.pdf

Description:: IC FLASH 512KBIT SPI 33MHZ 8SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,396

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SST25VF512A-33-4C-SAE-T from Microchip Technology is a 512 Kbit SPI serial flash memory IC with SuperFlash technology, operating at 2.7–3.6 V, supporting up to 33 MHz clock frequency, featuring uniform 4 KByte sectors and 32 KByte overlay blocks, and rated for commercial temperature range (0°C to +70°C). It serves as nonvolatile program/data storage in microcontroller boot code, firmware update, and configuration memory applications.

For engineers reviewing the SST25VF512A-33-4C-SAE-T datasheet, SST25VF512A-33-4C-SAE-T pinout, SST25VF512A-33-4C-SAE-T application, or SST25VF512A-33-4C-SAE-T equivalent, key selection criteria include SPI Mode 0/3 compatibility, 8 µA standby current, hardware HOLD#/WP# pins, AAI programming support, and SOIC-8 package suitability for space-constrained embedded designs.

Technical Context

The SST25VF512A-33-4C-SAE-T implements a four-wire SPI interface (SCK, SI, SO, CE#) with dual-mode clock polarity support (Mode 0 and Mode 3), enabling interoperability with diverse host controllers. Its SuperFlash split-gate cell architecture delivers 100,000 program/erase cycles and >100 years data retention - exceeding standard NOR flash reliability metrics.

Internal command execution includes Byte-Program (14 µs typical), Sector-Erase (18 ms), Chip-Erase (70 ms), and Auto Address Increment (AAI) mode for sequential writes without address retransmission. Status register monitoring (BUSY, WEL, BP0/BP1, BPL) enables precise control of write protection and operation completion detection.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	512 Kbit (64 KByte), organized as 128 × 4 KByte sectors and 16 × 32 KByte overlay blocks - supports granular firmware partitioning and OTA update staging.
Max Clock Frequency	33 MHz (High-Speed Read mode), enabling 3.3 MB/s sustained read throughput - suitable for real-time boot code fetch and parameter loading.
Supply Voltage	2.7–3.6 V single supply - compatible with 3.3 V logic systems and eliminates need for level shifters in most MCU interfaces.
Endurance & Retention	100,000 program/erase cycles typical; >100 years data retention - meets industrial lifecycle requirements for field-deployed devices.
Active/Standby Current	7 mA typical active read current; 8 µA typical standby current - enables low-power operation in battery-backed or energy-harvesting systems.
Operating Temperature	0°C to +70°C (Commercial grade) - validated for use in consumer electronics, industrial HMIs, and network edge devices.
Erase/Program Times	Sector-erase: 18 ms; Chip-erase: 70 ms; Byte-program: 14 µs - reduces firmware update latency and improves system responsiveness during configuration writes.

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 sequence - enables multi-device SPI bus sharing with hardware chip selection.
SO	Serial Data Output	Tri-state output driven on SCK falling edge - supports daisy-chaining and shared MISO lines in multi-peripheral configurations.
WP#	Write Protect	Hardware lock-down control for status register BP bits - provides tamper-resistant configuration locking independent of software state.
VSS	Ground	Reference return path for all I/O and core logic - requires low-impedance PCB grounding to maintain signal integrity at 33 MHz.
VDD	Power Supply	2.7–3.6 V input with bypass capacitor recommended - powers internal charge pump for erase/program operations.
HOLD#	Hold	Pauses ongoing SPI transaction without deselecting device - allows host CPU to service interrupts while preserving flash command context.
SCK	Serial Clock	Input timing reference for SI/SO; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) - ensures compatibility with STM32, PIC, and ARM Cortex-M SPI peripherals.
SI	Serial Data Input	Latched on SCK rising edge - receives opcodes, addresses, and data with MSB-first ordering per SPI protocol compliance.

Key Features

Feature	Design Value
SuperFlash Technology	Split-gate cell with thick-oxide tunneling injector enables lower program voltage, faster erase, and higher endurance vs. conventional NOR flash.
Auto Address Increment (AAI)	Reduces total programming time by eliminating repeated address transmission for sequential byte writes - critical for fast firmware patching.
Dual SPI Mode Support	Native compatibility with both SPI Mode 0 and Mode 3 eliminates need for clock polarity inversion logic or firmware workarounds.
Hardware Write Protection	WP# pin enables irreversible lock-down of Block-Protection bits (BP1/BP0) via BPL bit - prevents accidental corruption of protected boot sectors.
Flexible Erase Granularity	Independent 4 KByte sector and 32 KByte block erase options allow selective firmware updates without full chip reprogramming.
End-of-Write Detection	Software-readable BUSY bit and WEL status enable deterministic polling-based operation control - avoids fixed-delay timing assumptions.

Applications

Microcontroller Boot Memory	Firmware Update Storage
Use Scenario: Stores primary bootloader and initial firmware image for ARM Cortex-M or PIC microcontrollers during cold start. IC Role / Device Role / Timing Role: Nonvolatile storage accessed via SPI during reset initialization; supports high-speed read at 33 MHz to minimize boot latency. Use Value: 100-year data retention ensures reliable boot across product lifetime; 4 KByte sector erase enables safe dual-bank boot switching.	Use Scenario: Holds downloadable firmware images for over-the-air (OTA) or USB-based field updates in IoT gateways and smart sensors. IC Role / Device Role / Timing Role: Secondary storage partitioned into protected and updateable regions; uses AAI programming for rapid image write. Use Value: WP#/HOLD# pins allow atomic update sequencing without bus contention; 8 µA standby current extends battery life during idle periods.
Configuration Parameter Storage	Industrial HMI Display Memory
Use Scenario: Retains user calibration settings, network credentials, and operational thresholds in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: EEPROM-replacement storage accessed infrequently but requiring high write endurance and data integrity. Use Value: 100,000-cycle endurance exceeds typical PLC field life; software block protection prevents accidental overwrite of critical parameters.	Use Scenario: Stores display assets (fonts, icons, UI bitmaps) and localized language strings in human-machine interface panels. IC Role / Device Role / Timing Role: High-bandwidth read memory interfaced to display controller SPI port; leverages 33 MHz High-Speed Read mode. Use Value: Uniform 4 KByte sectors simplify asset versioning and partial updates; SOIC-8 package fits compact front-panel PCB layouts.

Microcontroller Boot Memory

Firmware Update Storage

Use Scenario: Stores primary bootloader and initial firmware image for ARM Cortex-M or PIC microcontrollers during cold start.

IC Role / Device Role / Timing Role: Nonvolatile storage accessed via SPI during reset initialization; supports high-speed read at 33 MHz to minimize boot latency.

Use Value: 100-year data retention ensures reliable boot across product lifetime; 4 KByte sector erase enables safe dual-bank boot switching.

Use Scenario: Holds downloadable firmware images for over-the-air (OTA) or USB-based field updates in IoT gateways and smart sensors.

IC Role / Device Role / Timing Role: Secondary storage partitioned into protected and updateable regions; uses AAI programming for rapid image write.

Use Value: WP#/HOLD# pins allow atomic update sequencing without bus contention; 8 µA standby current extends battery life during idle periods.

Configuration Parameter Storage

Industrial HMI Display Memory

Use Scenario: Retains user calibration settings, network credentials, and operational thresholds in programmable logic controllers (PLCs).

IC Role / Device Role / Timing Role: EEPROM-replacement storage accessed infrequently but requiring high write endurance and data integrity.

Use Value: 100,000-cycle endurance exceeds typical PLC field life; software block protection prevents accidental overwrite of critical parameters.

Use Scenario: Stores display assets (fonts, icons, UI bitmaps) and localized language strings in human-machine interface panels.

IC Role / Device Role / Timing Role: High-bandwidth read memory interfaced to display controller SPI port; leverages 33 MHz High-Speed Read mode.

Use Value: Uniform 4 KByte sectors simplify asset versioning and partial updates; SOIC-8 package fits compact front-panel PCB layouts.

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
Winbond W25Q80DVSSIG	8 Mbit density, 104 MHz max clock, Quad SPI support, different status register layout and protection scheme.	Higher capacity and speed suit complex GUIs; lacks HOLD# pin and AAI mode - limits interrupt-safe operation and sequential write efficiency.	Select when needing >512 Kbit capacity or Quad SPI bandwidth; verify software driver compatibility with extended instruction set.
Macronix MX25L512CM1D	512 Kbit, 80 MHz max clock, standard SPI only, identical SOIC-8 package and 2.7–3.6 V supply range.	Same footprint and voltage compatibility; no AAI mode and lower endurance (10,000 cycles) - less suitable for frequent field updates.	Choose for cost-sensitive designs where endurance and AAI are not required; confirm timing margins match 33 MHz operation.

Compared with SST25VF512A-33-4C-SAE-T, W25Q80DVSSIG offers higher density and speed but sacrifices HOLD# and AAI functionality essential for deterministic real-time systems, while MX25L512CM1D matches pinout and voltage but trades 10× lower endurance - making SST25VF512A-33-4C-SAE-T optimal for reliability-critical embedded firmware storage.

Availability

SST25VF512A-33-4C-SAE-T is available at Aetrix Electronics and suitable for microcontroller boot memory, firmware update storage, and configuration parameter retention requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for SST25VF512A-33-4C-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 acquisition of Silicon Storage Technology (SST) expanding its serial flash portfolio.

The SST25VF512A-33-4C-SAE-T belongs to SST's SuperFlash serial flash family, designed specifically for cost-sensitive, space-constrained embedded systems requiring high reliability, low power, and seamless SPI integration without external level-shifting.

FAQ

What is the maximum clock frequency supported by the SST25VF512A-33-4C-SAE-T?

The SST25VF512A-33-4C-SAE-T supports up to 33 MHz in High-Speed Read mode (command 0BH), enabling sustained read throughput of approximately 3.3 MB/s. Standard Read mode operates at up to 20 MHz. This 33 MHz rating is guaranteed across the full commercial temperature range (0°C to +70°C) and 2.7–3.6 V supply, as specified in the DS25090A datasheet.

Does the SST25VF512A-33-4C-SAE-T support SPI Mode 0 and Mode 3 simultaneously?

Yes, the SST25VF512A-33-4C-SAE-T natively supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1) without hardware modification. The device samples SI on the rising edge and drives SO on the falling edge of SCK in both modes, ensuring interoperability with a wide range of microcontroller SPI peripherals including those in STM32, PIC, and NXP Kinetis families.

How does the HOLD# pin function during an active SPI transaction in the SST25VF512A-33-4C-SAE-T?

The HOLD# pin in the SST25VF512A-33-4C-SAE-T suspends an ongoing SPI sequence without resetting internal state or requiring CE# deassertion. When HOLD# is pulled low while CE# is active, SO enters high-impedance and communication pauses; resuming requires driving HOLD# high while CE# remains low. This enables interrupt servicing or bus arbitration without losing command context - a feature confirmed in Figure 4 and Section 6 of DS25090A.

What write protection mechanisms are implemented in the SST25VF512A-33-4C-SAE-T?

The SST25VF512A-33-4C-SAE-T implements three-tiered write protection: (1) Hardware WP# pin enabling BPL bit lock-down, (2) Software-configurable BP0/BP1 bits defining 0%, 25%, 50%, or 100% memory protection, and (3) Status register write-enable requirement (WREN + EWSR/WRSR sequence). These mechanisms collectively prevent accidental or malicious overwrite of boot code or calibration data, as detailed in Tables 3–5 of DS25090A.

Is the SST25VF512A-33-4C-SAE-T pin-compatible with other members of the SST25VF family?

Yes, the SST25VF512A-33-4C-SAE-T shares identical pinout and electrical characteristics with other SOIC-8 variants in the SST25VF family (e.g., SST25VF010A, SST25VF020B), including SCK, SI, SO, CE#, WP#, HOLD#, VDD, and VSS assignments. This allows direct substitution within the same density class when board layout accommodates the SOIC-8 footprint, as verified in Figure 2 and Table 1 of DS25090A.

SST25VF512A-33-4C-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:: 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:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

SST25VF512A-33-4C-SAE-T FAQ

1.How can I place an order for SST25VF512A-33-4C-SAE-T through Aetrix?

Please submit a Request for Quotation (RFQ) for SST25VF512A-33-4C-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-33-4C-SAE-T reliable?

The price and inventory of SST25VF512A-33-4C-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-33-4C-SAE-T is usually 5 days.

3.What payment methods are accepted for SST25VF512A-33-4C-SAE-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF512A-33-4C-SAE-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SST25VF512A-33-4C-SAE-T?

SST25VF512A-33-4C-SAE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SST25VF512A-33-4C-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-33-4C-SAE-T?

For technical support, including SST25VF512A-33-4C-SAE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF512A-33-4C-SAE-T requirements.

6.How does Aetrix verify that SST25VF512A-33-4C-SAE-T is sourced from the original manufacturer or authorized distributors?

All SST25VF512A-33-4C-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-33-4C-SAE-T meets industry standards.

7.What is the process for return or replacement of SST25VF512A-33-4C-SAE-T?

All SST25VF512A-33-4C-SAE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF512A-33-4C-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-33-4C-SAE-T part is unused and in its original packaging.

Return procedure for SST25VF512A-33-4C-SAE-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

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.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…