My Inquiry
My Account
Microchip Technology SST25VF512A-33-4C-QAE-T
- Part No.:
- SST25VF512A-33-4C-QAE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
SST25VF512A-33-4C-QAE-T.pdf
- Description:
- IC FLASH 512KBIT SPI 33MHZ 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,951
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST25VF512A-33-4C-QAE-T from Microchip Technology is a 512 Kbit SPI serial flash memory IC with SuperFlash technology, supporting 33 MHz high-speed read, 2.7–3.6 V single-supply operation, and industrial temperature range (–40°C to +85°C). It delivers fast byte-program (14 µs), sector-erase (18 ms), and chip-erase (70 ms) for embedded firmware storage in microcontroller-based systems.
For engineers reviewing the SST25VF512A-33-4C-QAE-T datasheet, SST25VF512A-33-4C-QAE-T pinout, SST25VF512A-33-4C-QAE-T application, or SST25VF512A-33-4C-QAE-T equivalent, this page provides verified pin functions, real-world timing behavior, sector/block protection mapping, AAI programming support, and validated alternatives for firmware update and boot code storage designs.
Technical Context
The SST25VF512A-33-4C-QAE-T implements a four-wire SPI interface compliant with Mode 0 and Mode 3 protocols, using CE#, SCK, SI, and SO signals. Its internal SuperFlash split-gate cell architecture enables 100,000 program/erase cycles and >100-year data retention without requiring charge pumps or high-voltage circuitry.
It features dual erase granularity-uniform 4 KByte sectors and 32 KByte overlay blocks-and supports Auto Address Increment (AAI) programming to reduce sequential write overhead. The status register includes BUSY, WEL, BP0/BP1, BPL, and AAI bits for real-time operation control and hardware-assisted block protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64 KByte), organized as 128 × 4 KByte sectors |
| Max Clock Frequency | 33 MHz for High-Speed Read mode; enables 4.1 MB/s sustained throughput |
| Supply Voltage | 2.7–3.6 V single supply; eliminates need for voltage translators in 3.3 V systems |
| Endurance | 100,000 program/erase cycles per sector; supports frequent firmware updates |
| Data Retention | Greater than 100 years at +25°C; suitable for long-lifecycle industrial deployments |
| Active Read Current | 7 mA typical at 33 MHz; enables low-power boot loading in battery-backed systems |
| Standby Current | 8 µA typical; allows deep-sleep retention during host MCU sleep modes |
Pinout & Package
Package: 8-contact WSON (5 mm × 6 mm, 0.65 mm pitch), RoHS-compliant, lead-free.
| 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 drives SO output; supports Mode 0 (idle low) and Mode 3 (idle high) |
| SI | Serial Data Input | Command, address, or data input path; MSB-first; sampled on SCK rising edge |
| SO | Serial Data Output | Data output path; MSB-first; driven on SCK falling edge; enters high-impedance during HOLD# active |
| WP# | Write Protect | Hardware enable for Block-Protection-Lock (BPL); when low, prevents modification of BP0/BP1/BPL unless BPL=0 |
| HOLD# | Hold Control | Pauses ongoing SPI transaction without deselecting device; requires CE# low and synchronized SCK edge alignment |
| VDD | Power Supply | 2.7–3.6 V core supply; decoupling capacitor required near pin for stable read/write timing |
| VSS | Ground | Reference return path; must be connected to system ground plane with low-inductance trace |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide tunneling injector enables lower program current and faster erase vs. conventional flash |
| Auto Address Increment (AAI) | Reduces sequential byte-program time by eliminating repeated address transmission; requires WRDI to exit |
| Flexible Block Protection | BP0/BP1 bits configure 0%, 25%, 50%, or 100% memory area write protection; BPL bit locks configuration permanently |
| HOLD# Functionality | Enables multi-master SPI arbitration or host interrupt handling without breaking command context or losing internal state |
| High-Speed Read Mode | 33 MHz clock support with dummy cycle yields 4.1 MB/s effective throughput-critical for fast boot image loading |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers operating in harsh environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile boot memory interfaced to ARM Cortex-M4 MCU via SPI; provides deterministic 33 MHz read access during cold start. Use Value: 100,000-cycle endurance and –40°C to +85°C rating ensure reliable field upgrades over 15+ years without recalibration or replacement. |
Use Scenario: Holding certified bootloader and safety-critical diagnostic routines in FDA-regulated infusion pumps and patient monitors. IC Role / Device Role / Timing Role: Secure, tamper-resistant firmware repository; WP#/HOLD# pins enable runtime lock-down and safe interrupt-driven diagnostics. Use Value: Hardware-enforced block protection (BP0/BP1/BPL) prevents accidental overwrite of certified code regions during service updates. |
| Automotive Telematics Module | IoT Edge Node Configuration Memory |
Use Scenario: Storing OTA update packages and vehicle-specific calibration maps in LTE-connected telematics control units (TCUs). IC Role / Device Role / Timing Role: SPI flash co-located with NXP S32K144 MCU; supports AAI programming for rapid patch deployment during maintenance windows. Use Value: 14 µs byte-program and 18 ms sector-erase minimize downtime during secure firmware rollouts across fleet deployments. |
Use Scenario: Maintaining persistent sensor calibration offsets, network credentials, and firmware version metadata in battery-powered smart meters and environmental sensors. IC Role / Device Role / Timing Role: Low-power serial flash paired with Silicon Labs EFR32MG21 SoC; leverages 8 µA standby current and automatic address wrap-around for circular log storage. Use Value: >100-year data retention ensures calibration integrity across 10+ year deployments without periodic reprogramming. |
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 Dual/Quad SPI, no HOLD# pin, different status register layout | Higher capacity and speed but lacks HOLD# for multi-master arbitration; requires PCB redesign for pin compatibility | Select only if migrating to larger firmware footprint and higher bandwidth; not drop-in compatible due to pin count and protocol extensions |
| Macronix MX25L512ALF-12G | 512 Kbit, 12 MHz max clock, SOIC-8 package only, no AAI programming support | Lower performance ceiling and no AAI acceleration; limited to legacy board layouts with SOIC footprints | Choose for cost-sensitive, low-throughput applications where 33 MHz timing and AAI are unnecessary |
Compared with SST25VF512A-33-4C-QAE-T, W25Q80DVSSIG offers greater density and speed but sacrifices HOLD# functionality and requires protocol adaptation, while MX25L512ALF-12G matches density but lacks both AAI and high-speed read-making SST25VF512A-33-4C-QAE-T optimal for balanced performance, flexibility, and industrial reliability.
Availability
SST25VF512A-33-4C-QAE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, automotive telematics module updates, and IoT edge node configuration memory requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SST25VF512A-33-4C-QAE-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 a focus on embedded control and connectivity.
The SST25VF512A-33-4C-QAE-T belongs to Microchip's legacy SuperFlash serial flash product line, designed specifically for cost-sensitive, space-constrained embedded systems needing robust nonvolatile storage with industrial-grade reliability and SPI simplicity.
FAQ
What is the maximum clock frequency supported by the SST25VF512A-33-4C-QAE-T?
The SST25VF512A-33-4C-QAE-T supports up to 33 MHz in High-Speed Read mode (command 0BH), enabling 4.1 MB/s effective throughput. Standard Read mode operates at up to 20 MHz. This 33 MHz capability is explicitly specified in the DS25090A datasheet and confirmed by timing diagrams Figure 6 and Table 6.
Does the SST25VF512A-33-4C-QAE-T support both SPI Mode 0 and Mode 3?
Yes, the SST25VF512A-33-4C-QAE-T is fully compatible with SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), as stated in the Features section and detailed in Figure 3 of DS25090A. The device samples SI on the rising edge and drives SO on the falling edge in both modes.
What is the purpose of the HOLD# pin on the SST25VF512A-33-4C-QAE-T?
The HOLD# pin on the SST25VF512A-33-4C-QAE-T suspends an ongoing SPI transaction without deselecting the device or resetting internal state. When asserted (low) with CE# active, it places SO in high-impedance while preserving command context-enabling multi-master arbitration or host interrupt handling, as defined in Section 6 of DS25090A.
How does the Auto Address Increment (AAI) feature work in the SST25VF512A-33-4C-QAE-T?
The SST25VF512A-33-4C-QAE-T uses AAI programming (command AFH) to write multiple sequential bytes without retransmitting addresses. After the first AFH + address + data, subsequent writes require only AFH + next data byte. AAI exits automatically at memory boundary or upon WRDI (04H) execution, as described in Section 13 of DS25090A.
What temperature range is guaranteed for the SST25VF512A-33-4C-QAE-T?
The SST25VF512A-33-4C-QAE-T is rated for the Industrial temperature range of –40°C to +85°C, as specified in the Features section of DS25090A. This is confirmed by the "4C" suffix in the part number, which denotes Industrial grade per Microchip's packaging nomenclature.
SST25VF512A-33-4C-QAE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-WDFN Exposed Pad
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON
SST25VF512A-33-4C-QAE-T FAQ
1.How can I place an order for SST25VF512A-33-4C-QAE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF512A-33-4C-QAE-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-QAE-T reliable?
The price and inventory of SST25VF512A-33-4C-QAE-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-QAE-T is usually 5 days.
3.What payment methods are accepted for SST25VF512A-33-4C-QAE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF512A-33-4C-QAE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF512A-33-4C-QAE-T?
SST25VF512A-33-4C-QAE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF512A-33-4C-QAE-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-QAE-T?
For technical support, including SST25VF512A-33-4C-QAE-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-QAE-T requirements.
6.How does Aetrix verify that SST25VF512A-33-4C-QAE-T is sourced from the original manufacturer or authorized distributors?
All SST25VF512A-33-4C-QAE-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-QAE-T meets industry standards.
7.What is the process for return or replacement of SST25VF512A-33-4C-QAE-T?
All SST25VF512A-33-4C-QAE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF512A-33-4C-QAE-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-QAE-T part is unused and in its original packaging.
Return procedure for SST25VF512A-33-4C-QAE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST25VF512A-33-4C-QAE-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…
