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Microchip Technology SST25VF512A-33-4C-ZAE
- Part No.:
- SST25VF512A-33-4C-ZAE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFBGA, CSPBGA
- Datasheet:
-
SST25VF512A-33-4C-ZAE.pdf
- Description:
- IC FLASH 512KBIT SPI 33MHZ 8CSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,582
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Product details
Overview
SST25VF512A-33-4C-ZAE 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 features uniform 4 KByte sectors and 32 KByte overlay blocks, enabling flexible firmware storage in microcontroller boot loaders and embedded configuration systems.
For engineers reviewing the SST25VF512A-33-4C-ZAE datasheet, SST25VF512A-33-4C-ZAE pinout, SST25VF512A-33-4C-ZAE application, or SST25VF512A-33-4C-ZAE equivalent, key selection criteria include SPI Mode 0/3 compatibility, HOLD#/WP# hardware control, AAI programming efficiency, 100,000-cycle endurance, and RoHS-compliant 8-lead SOIC packaging.
Technical Context
The SST25VF512A-33-4C-ZAE 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 faster erase (18 ms sector-erase) and lower total energy per operation versus conventional flash.
Hardware control lines HOLD# and WP# operate independently of CE#, allowing real-time suspension of ongoing transfers and selective lock-down of status register bits (BPL, BP1, BP0). The device uses auto-incrementing internal address pointers during Read and High-Speed-Read, with wrap-around behavior at address boundary 0xFFFF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64 KByte), organized as sixteen 4 KByte sectors or two 32 KByte overlay blocks - enables granular firmware partitioning and OTA update staging. |
| Max Clock Frequency | 33 MHz for High-Speed-Read (0BH command) - supports 3.3 MB/s sequential read throughput in systems requiring fast boot code fetch. |
| Supply Voltage | 2.7–3.6 V single supply - compatible with 3.3 V I/O domains without level-shifting, simplifying power rail design. |
| Endurance & Retention | 100,000 program/erase cycles typical; >100 years data retention - suitable for infrequently updated configuration storage in industrial controllers. |
| Active/Standby Current | 7 mA typical active read current; 8 µA typical standby current - reduces system-level power budget in battery-backed or low-power sleep modes. |
| Temperature Range | –40°C to +85°C (Industrial grade) - validated for deployment in automotive body control modules and factory automation edge nodes. |
| Erase/Program Speed | 18 ms sector-erase typical; 14 µs byte-program typical; 70 ms chip-erase typical - accelerates field firmware recovery and manufacturing programming cycles. |
Pinout & Package
Package: 8-lead SOIC (150 mil body width), RoHS-compliant, surface-mountable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable (active-low) | Selects device for SPI command execution; must remain low throughout full instruction cycle including address and data phases. |
| SO | Serial Data Output | Tri-state output driving data on falling SCK edge; enters high-impedance state during HOLD# activation or CE# deassertion. |
| WP# | Write Protect (active-low) | Enables BPL bit lock-down; when low and BPL=1, prevents modification of BP1/BP0 and BPL bits in status register. |
| VSS | Ground | Reference return path for all digital and analog circuitry; requires low-impedance PCB connection to minimize noise coupling. |
| VDD | Power Supply | 2.7–3.6 V input; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin for stable core voltage during high-speed transitions. |
| HOLD# | Hold (active-low) | Suspends ongoing SPI transfer without resetting internal state; requires synchronization with SCK low phase to enter/exit hold mode. |
| SCK | Serial Clock | Provides timing reference; sampled on rising edge for SI, drives SO on falling edge; supports Mode 0 (idle low) and Mode 3 (idle high). |
| SI | Serial Data Input | Accepts commands, addresses, and data MSB-first; latched on rising SCK edge; remains valid during HOLD# assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Auto Address Increment (AAI) Programming | Reduces multi-byte programming time by eliminating repeated address transmission - cuts total write time by ~40% vs. standard byte-program for contiguous data. |
| Flexible Block Protection | BP1/BP0 bits configure protection for 0%, 25%, 50%, or 100% of memory array; BPL bit enables permanent lock-down of protection settings via WP#. |
| High-Speed-Read Mode | 33 MHz operation with dummy byte overhead - achieves 3.3 MB/s effective throughput while maintaining SPI bus compatibility with legacy controllers. |
| End-of-Write Detection | Software-pollable BUSY bit in status register - eliminates need for fixed delay timers, enabling deterministic host software flow control during erase/program operations. |
| SuperFlash Technology | Split-gate cell with thick-oxide tunneling injector - delivers 10× faster erase and 3× lower program energy versus standard NOR flash, extending system battery life. |
Applications
| Boot Code Storage | Firmware Configuration |
|---|---|
Use Scenario: Storing bootloader image and initial firmware for ARM Cortex-M microcontrollers in industrial gateways. IC Role / Device Role / Timing Role: Non-volatile storage for XIP-capable boot code; accessed via SPI during cold start before RAM initialization. Use Value: 33 MHz High-Speed-Read ensures sub-100 ms boot latency; 4 KByte sector granularity allows atomic firmware updates without erasing entire image. |
Use Scenario: Holding calibration parameters and user preferences in medical diagnostic equipment with regulatory data integrity requirements. IC Role / Device Role / Timing Role: Persistent configuration store; written infrequently but read at every power-on reset. Use Value: 100,000-cycle endurance and >100-year retention guarantee long-term reliability; WP#/BPL lock-down prevents accidental corruption during field service. |
| OTA Update Buffer | Secure Key Storage |
Use Scenario: Acting as staging area for downloaded firmware patches in smart metering endpoints operating on narrowband PLC networks. IC Role / Device Role / Timing Role: Dual-bank buffer supporting A/B firmware swap; erased and reprogrammed during maintenance windows. Use Value: 32 KByte overlay blocks enable atomic 32 KB patch writes; AAI programming reduces download-to-deploy latency by minimizing SPI transaction overhead. |
Use Scenario: Storing cryptographic keys and secure boot certificates in payment terminal hardware requiring FIPS 140-2 Level 2 compliance. IC Role / Device Role / Timing Role: Tamper-resistant non-volatile memory segment isolated via software block protection. Use Value: BP1/BP0 + BPL lock-down prevents runtime key overwrite; industrial temperature rating ensures stability during thermal stress testing. |
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 W25Q80DVSSIG | 8 Mbit density, 104 MHz Quad SPI, 2.7–3.6 V, SOIC-8 package - higher capacity and faster interface but lacks HOLD# pin and AAI mode. | Requires Quad SPI host support; unsuitable for legacy dual-I/O SPI controllers or designs needing hardware suspend capability. | Select when migrating to higher-density firmware storage and host supports QSPI; avoid if HOLD# functionality or AAI efficiency is required. |
| Macronix MX25L512ALZUI-12G | 512 Kbit density, 80 MHz standard SPI, 2.7–3.6 V, SOIC-8 - matches pinout and voltage but specifies only 20 MHz max read speed and no AAI mode. | Lower read throughput limits boot performance; absence of AAI increases programming time for large configuration sets. | Use as drop-in replacement where 20 MHz read speed suffices and AAI is unused; verify HOLD#/WP# timing margins against original design. |
Compared with SST25VF512A-33-4C-ZAE, the W25Q80DVSSIG offers greater density and speed but sacrifices HOLD# and AAI - critical for suspend-capable or energy-constrained systems - while the MX25L512ALZUI-12G matches footprint and voltage but trades 33 MHz performance and advanced programming for cost reduction.
Availability
SST25VF512A-33-4C-ZAE is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and smart utility metering requiring stable component supply across extended product lifecycles.
Supply support for SST25VF512A-33-4C-ZAE 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) in 2010.
The SST25VF512A-33-4C-ZAE belongs to SST's SuperFlash serial flash product line, engineered for high-reliability embedded applications demanding fast, low-power, and robust non-volatile storage in space-constrained designs.
FAQ
What is the maximum clock frequency supported by SST25VF512A-33-4C-ZAE for read operations?
The SST25VF512A-33-4C-ZAE supports up to 33 MHz for High-Speed-Read operations using the 0BH command with a dummy byte. Standard Read (03H) operates at up to 20 MHz. This dual-speed capability allows designers to optimize between timing margin and throughput depending on host controller capabilities and signal integrity constraints in the SST25VF512A-33-4C-ZAE implementation.
Does SST25VF512A-33-4C-ZAE support both SPI Mode 0 and Mode 3?
Yes, the SST25VF512A-33-4C-ZAE explicitly supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), as confirmed in the DS25090A datasheet Section 5. This dual-mode compatibility enables direct interfacing with a wide range of microcontrollers - including those with fixed SPI polarity/phase settings - without requiring external logic translation in the SST25VF512A-33-4C-ZAE design.
How does the HOLD# pin function in SST25VF512A-33-4C-ZAE?
The HOLD# pin in SST25VF512A-33-4C-ZAE suspends an active SPI transaction without deselecting the device or resetting internal state. Activation requires CE# low and a falling edge on HOLD# synchronized with SCK low; SO enters high-impedance while SI/SCK remain valid. Resumption occurs on rising HOLD# edge aligned with next SCK low phase - preserving command context across the SST25VF512A-33-4C-ZAE hold interval.
What is the purpose of Auto Address Increment (AAI) in SST25VF512A-33-4C-ZAE?
AAI in SST25VF512A-33-4C-ZAE eliminates the need to resend the address for each subsequent byte during multi-byte programming. After initial AFH command + address + data, further bytes use only AFH + data, reducing SPI overhead by ~33% per byte. This cuts total programming time significantly - especially valuable in SST25VF512A-33-4C-ZAE applications like field firmware updates where bandwidth is constrained.
Can SST25VF512A-33-4C-ZAE be used in industrial temperature environments?
Yes, the SST25VF512A-33-4C-ZAE is rated for the industrial temperature range of –40°C to +85°C, as specified in the DS25090A datasheet Section 3. This makes it suitable for deployment in harsh environments such as factory automation controllers, outdoor utility meters, and transportation electronics where ambient thermal cycling exceeds commercial grade limits - a key qualification for SST25VF512A-33-4C-ZAE industrial use cases.
SST25VF512A-33-4C-ZAE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-UFBGA, CSPBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-CSP
SST25VF512A-33-4C-ZAE FAQ
1.How can I place an order for SST25VF512A-33-4C-ZAE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF512A-33-4C-ZAE 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-ZAE reliable?
The price and inventory of SST25VF512A-33-4C-ZAE 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-ZAE is usually 5 days.
3.What payment methods are accepted for SST25VF512A-33-4C-ZAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF512A-33-4C-ZAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF512A-33-4C-ZAE?
SST25VF512A-33-4C-ZAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF512A-33-4C-ZAE 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-ZAE?
For technical support, including SST25VF512A-33-4C-ZAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF512A-33-4C-ZAE requirements.
6.How does Aetrix verify that SST25VF512A-33-4C-ZAE is sourced from the original manufacturer or authorized distributors?
All SST25VF512A-33-4C-ZAE 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-ZAE meets industry standards.
7.What is the process for return or replacement of SST25VF512A-33-4C-ZAE?
All SST25VF512A-33-4C-ZAE units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF512A-33-4C-ZAE, 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-ZAE part is unused and in its original packaging.
Return procedure for SST25VF512A-33-4C-ZAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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