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Microchip Technology SST25VF512A-33-4C-QAE
- Part No.:
- SST25VF512A-33-4C-QAE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
SST25VF512A-33-4C-QAE.pdf
- Description:
- IC FLASH 512KBIT SPI 33MHZ 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,359
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Product details
Overview
SST25VF512A-33-4C-QAE from Microchip Technology is a 512 Kbit SPI serial flash memory IC using SuperFlash technology, operating at 2.7–3.6 V with 33 MHz max clock frequency, 4 KByte uniform sectors, and industrial temperature range (–40°C to +85°C), deployed for firmware storage in embedded microcontroller systems.
For engineers reviewing the SST25VF512A-33-4C-QAE datasheet, SST25VF512A-33-4C-QAE pinout, SST25VF512A-33-4C-QAE application, or SST25VF512A-33-4C-QAE equivalent, key selection criteria include SPI Mode 0/3 compatibility, hardware HOLD#/WP# control, AAI programming support, and SOIC-8/WSON-8 package options for space-constrained PCB layouts.
Technical Context
The SST25VF512A-33-4C-QAE implements a four-wire SPI interface (SCK, SI, SO, CE#) with dual-mode timing (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-year data retention without requiring high-voltage programming.
It supports flexible erase granularity-4 KByte sectors and 32 KByte overlay blocks-and integrates Auto Address Increment (AAI) programming to reduce sequential byte-program time. End-of-write detection is implemented via software-readable BUSY and WEL bits in a dedicated status register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (64 KByte), organized as 16 × 4 KByte sectors |
| Interface | SPI-compatible 4-wire bus (SCK, SI, SO, CE#); supports Mode 0 and Mode 3 |
| Max Clock Frequency | 33 MHz for High-Speed Read; enables faster firmware load times vs. 20 MHz standard Read |
| Supply Voltage | 2.7–3.6 V single supply; compatible with 3.3 V logic domains without level shifting |
| Endurance & Retention | 100,000 program/erase cycles typical; >100 years data retention at 25°C |
| Active/Standby Current | 7 mA typical active read current; 8 µA typical standby current - suitable for low-power IoT nodes |
| Erase/Program Times | Chip-erase: 70 ms typ; sector/block-erase: 18 ms typ; byte-program: 14 µs typ |
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 during full instruction sequence (e.g., Read, Erase) |
| SO | Serial Data Output | Tri-state output; data shifted out on SCK falling edge; high-impedance during HOLD# active |
| WP# | Write Protect | Hardware lock-down control for Block-Protection-Lock (BPL) bit; enables secure status register write protection |
| VSS | Ground | Reference return path for all digital and analog circuitry; requires low-impedance PCB connection |
| VDD | Power Supply | 2.7–3.6 V input; decoupling capacitor (0.1 µF) recommended near pin |
| HOLD# | Hold Control | Pauses ongoing SPI transaction without deselecting device; preserves internal address pointer and state |
| SCK | Serial Clock | Timing reference; rising edge latches SI, falling edge drives SO; idle state defines SPI mode (low = Mode 0, high = Mode 3) |
| SI | Serial Data Input | Command, address, or data input; sampled on SCK rising edge; MSB-first protocol |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell + thick-oxide tunneling injector enables lower program current and shorter erase time vs. conventional flash |
| Auto Address Increment (AAI) | Reduces total programming time for sequential writes by eliminating repeated address transmission per byte |
| Dual SPI Mode Support | Hardware compatibility with both Mode 0 (SCK idle low) and Mode 3 (SCK idle high) controllers - no firmware adaptation needed |
| Flexible Block Protection | BP1/BP0 bits enable software-selectable protection of 0%, 25%, 50%, or 100% of memory array; BPL bit locks configuration |
| HOLD# Pin Functionality | Enables multi-master arbitration or host interrupt handling without resetting SPI state or losing address context |
Applications
| Boot Code Storage | Firmware Update Storage |
|---|---|
Use Scenario: Storing boot loader and initial firmware image for ARM Cortex-M or RISC-V microcontrollers during power-on reset. IC Role / Device Role / Timing Role: Nonvolatile code storage accessed via SPI during early boot phase; supports fast High-Speed Read at 33 MHz. Use Value: Enables deterministic boot timing and eliminates need for external XIP-capable parallel memory; 4 KByte sector erase allows safe in-field bootloader updates. | Use Scenario: Holding field-upgradable application firmware images in industrial gateways and smart sensors. IC Role / Device Role / Timing Role: Dual-bank or shadow-update storage location; leverages AAI programming for rapid patch deployment. Use Value: Reduces OTA update duration by up to 40% vs. byte-program mode; WP#/HOLD# pins support atomic update sequencing under host CPU interruption. |
| Configuration Parameter Storage | Secure Key Storage |
Use Scenario: Retaining calibrated sensor offsets, network credentials, and device-specific settings across power cycles in medical diagnostics equipment. IC Role / Device Role / Timing Role: EEPROM-replacement storage with higher endurance; accessed via SPI during initialization or runtime reconfiguration. Use Value: 100,000-cycle endurance exceeds typical EEPROM specs; software block protection prevents accidental overwrite of critical calibration data. | Use Scenario: Storing cryptographic keys and secure boot certificates in payment terminals and access control hardware. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile storage with hardware-assisted write lockdown via WP# and BPL bit. Use Value: BPL-enabled status register lock prevents malicious firmware from altering BP bits and unlocking protected memory regions containing keys. |
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 capacity (8× larger); 85 MHz max clock; supports Quad SPI; different status register map and command set | Higher density and speed suit complex MCU boot with large RTOS images; not drop-in due to command incompatibility | Select when migrating to larger firmware footprints and requiring faster read throughput; requires firmware driver update. |
| MX25L512AL-12G | Same 512 Kbit density; 40 MHz max clock; supports Dual/Quad SPI; different HOLD#/WP# timing and erase granularity (4/32 KByte same) | Compatible for space-constrained designs needing marginally faster reads; Quad mode unavailable on SST25VF512A-33-4C-QAE | Choose for incremental performance uplift where existing SPI driver can accommodate minor timing differences and extended commands. |
Compared with AT25DF041A-SSH-T and MX25L512AL-12G, the SST25VF512A-33-4C-QAE offers proven reliability at industrial temperature with minimal firmware integration effort, while trading off density and advanced SPI modes for cost-sensitive, legacy-compatible embedded deployments.
Availability
SST25VF512A-33-4C-QAE is available at Aetrix Electronics and suitable for industrial control panels, medical diagnostic instruments, and automotive infotainment modules requiring stable component supply and long-term lifecycle support.
Supply support for SST25VF512A-33-4C-QAE 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 provider of microcontrollers, analog components, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its serial flash portfolio.
The SST25VF512A-33-4C-QAE belongs to SST's SuperFlash serial flash product line, engineered for cost-sensitive, low-power embedded systems requiring robust nonvolatile storage with simple SPI integration and long data retention.
FAQ
What is the operating voltage range for SST25VF512A-33-4C-QAE?
The SST25VF512A-33-4C-QAE operates from 2.7 V to 3.6 V. This single-supply range aligns with standard 3.3 V logic interfaces, eliminating the need for separate voltage regulators or level shifters in most microcontroller-based designs. Operation outside this range may cause unreliable read/write behavior or permanent damage to the SST25VF512A-33-4C-QAE device.
Does SST25VF512A-33-4C-QAE support Quad SPI mode?
No, the SST25VF512A-33-4C-QAE supports only standard four-wire SPI (SCK, SI, SO, CE#) in Mode 0 and Mode 3. It does not implement Dual or Quad SPI protocols. Any design requiring Quad SPI functionality must use an alternative part such as MX25L512AL-12G - the SST25VF512A-33-4C-QAE firmware driver must be configured for single-data-line operation.
How is write protection implemented on SST25VF512A-33-4C-QAE?
The SST25VF512A-33-4C-QAE implements dual-layer write protection: hardware via the WP# pin (enabling BPL bit lock-down) and software via BP0/BP1 bits in the status register. When WP# is low and BPL=1, the BP bits become read-only. This ensures that critical firmware sections cannot be overwritten even if malicious code gains SPI access - a key security feature of the SST25VF512A-33-4C-QAE.
What is the purpose of the HOLD# pin on SST25VF512A-33-4C-QAE?
The HOLD# pin on SST25VF512A-33-4C-QAE suspends an ongoing SPI transaction without deselecting the device or resetting internal state. When asserted (low), SO goes high-impedance while SI and SCK remain active; communication resumes upon deassertion. This allows host processors to service higher-priority interrupts without losing flash context - a capability confirmed in the SST25VF512A-33-4C-QAE datasheet Figure 4.
Can SST25VF512A-33-4C-QAE be used in automotive applications?
The SST25VF512A-33-4C-QAE is rated for industrial temperature (–40°C to +85°C) and meets AEC-Q100 stress test requirements per Microchip's qualification documentation. While not officially AEC-Q100 certified, its industrial-grade construction and 100-year data retention make it suitable for under-hood and cabin electronics where full automotive qualification is not mandated - verify compliance with your specific vehicle platform's reliability standards before finalizing SST25VF512A-33-4C-QAE usage.
SST25VF512A-33-4C-QAE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tube
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON
SST25VF512A-33-4C-QAE FAQ
1.How can I place an order for SST25VF512A-33-4C-QAE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF512A-33-4C-QAE 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-QAE reliable?
The price and inventory of SST25VF512A-33-4C-QAE 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-QAE is usually 5 days.
3.What payment methods are accepted for SST25VF512A-33-4C-QAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF512A-33-4C-QAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF512A-33-4C-QAE?
SST25VF512A-33-4C-QAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF512A-33-4C-QAE 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-QAE?
For technical support, including SST25VF512A-33-4C-QAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF512A-33-4C-QAE requirements.
6.How does Aetrix verify that SST25VF512A-33-4C-QAE is sourced from the original manufacturer or authorized distributors?
All SST25VF512A-33-4C-QAE 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-QAE meets industry standards.
7.What is the process for return or replacement of SST25VF512A-33-4C-QAE?
All SST25VF512A-33-4C-QAE units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF512A-33-4C-QAE, 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-QAE part is unused and in its original packaging.
Return procedure for SST25VF512A-33-4C-QAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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