My Inquiry
My Account
Microchip Technology SST25VF512A-33-4I-ZAE
- Part No.:
- SST25VF512A-33-4I-ZAE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFBGA, CSPBGA
- Datasheet:
-
SST25VF512A-33-4I-ZAE.pdf
- Description:
- IC FLASH 512KBIT SPI 33MHZ 8CSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,163
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST25VF512A-33-4I-ZAE 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 from a single 2.7–3.6 V supply, supports up to 33 MHz clock frequency, delivers 100,000 program/erase cycles, and guarantees >100 years data retention - deployed in industrial control modules requiring reliable nonvolatile code storage.
For engineers reviewing the SST25VF512A-33-4I-ZAE datasheet, SST25VF512A-33-4I-ZAE pinout, SST25VF512A-33-4I-ZAE application, or SST25VF512A-33-4I-ZAE equivalent, key selection criteria include SPI Mode 0/3 compatibility, industrial temperature range (−40°C to +85°C), 4 KByte sector erase granularity, WSON-8 package footprint, and hardware write protection via WP# and HOLD# pins.
Technical Context
The SST25VF512A-33-4I-ZAE implements a four-wire SPI interface with CE#, SCK, SI, and SO signals, supporting both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) timing. Its SuperFlash technology uses split-gate cells and thick-oxide tunneling for enhanced endurance and reduced program/erase energy.
It features dual erase architectures: uniform 4 KByte sectors and 32 KByte overlay blocks, plus Auto Address Increment (AAI) programming to accelerate sequential byte writes. Status register bits (BUSY, WEL, BP0/BP1, BPL) enable real-time operation monitoring and configurable software/hardware write 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 - enables ≤30 ns effective access time in burst reads |
| Supply Voltage | 2.7–3.6 V - compatible with 3.3 V logic domains without level shifting |
| Endurance | 100,000 program/erase cycles - supports frequent firmware updates in field-deployed devices |
| Data Retention | >100 years at +25°C - ensures long-term reliability in unpowered storage applications |
| Operating Temp | −40°C to +85°C (Industrial grade) - validated for use in motor drives and PLCs |
| Active Read Current | 7 mA typical - minimizes power draw during boot code fetch sequences |
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 execution to prevent premature termination |
| SCK | Serial Clock | Timing reference for SPI transfers; rising edge latches input (SI), falling edge outputs data (SO) |
| SI | Serial Data Input | Receives opcodes, addresses, and write data; MSB-first, synchronized to SCK rising edge |
| SO | Serial Data Output | Transmits read data and status register contents; high-impedance when HOLD# active |
| WP# | Write Protect | Hardware lock-down control for status register BP1/BP0/BPL bits; low = BPL bit enabled |
| HOLD# | Hold | Suspends ongoing SPI transaction without deselecting device; preserves internal address pointer |
| VDD | Power Supply | 2.7–3.6 V core supply; decoupling capacitor required per layout guidelines |
| VSS | Ground | Reference return path; must be connected to system ground plane with low-inductance routing |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell architecture reduces program/erase voltage stress, enabling 100k-cycle endurance and low-energy operation |
| Flexible Erase Granularity | Independent 4 KByte sector and 32 KByte block erase - allows partial firmware updates without full chip erase |
| Auto Address Increment (AAI) | Eliminates repeated address retransmission during multi-byte programming - cuts total write time by ~40% vs. Byte-Program |
| Dual SPI Mode Support | Native compatibility with both Mode 0 and Mode 3 eliminates need for bus-level protocol translation logic |
| Hardware Write Protection | WP# and HOLD# pins provide deterministic, glitch-immune control over status register lock-down and command suspension |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing boot firmware and calibration tables in programmable logic controllers operating in factory-floor environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast read access and robust write protection to prevent accidental corruption during brown-out events. Use Value: 100-year data retention and −40°C to +85°C rating ensure firmware integrity across 15+ year product lifecycles without refresh. |
Use Scenario: Holding device-specific calibration coefficients and regulatory compliance logs in portable diagnostic equipment subject to strict traceability requirements. IC Role / Device Role / Timing Role: Secure configuration storage with hardware-enabled write lock-down (via WP#) to meet IEC 62304 software safety classification. Use Value: BPL bit lock-down prevents unauthorized modification of protection bits - satisfies audit requirements for immutable configuration records. |
| Smart Energy Meter Boot Code | Automotive Body Control Module NVM |
Use Scenario: Hosting bootloader and secure boot keys in ANSI C12.22-compliant electricity meters deployed in outdoor utility cabinets. IC Role / Device Role / Timing Role: SPI-connected primary boot memory with fast 33 MHz read capability to minimize boot latency under cold-start conditions. Use Value: High-speed read mode reduces boot time by 35% vs. standard 20 MHz SPI flash - critical for rapid meter wake-up after power restoration. |
Use Scenario: Storing lighting control logic and seat-position profiles in automotive body control units where vibration and thermal cycling are severe. IC Role / Device Role / Timing Role: Ruggedized nonvolatile memory with 100k-cycle endurance to support frequent OTA update cycles over 15-year vehicle life. Use Value: 4 KByte sector erase enables incremental firmware patching without disrupting active control functions - improves update safety. |
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 map | Higher capacity and speed but lacks HOLD# - unsuitable where suspend-on-demand is required | Select only if migrating to larger memory and redesigning SPI interface for Dual/Quad mode |
| Macronix MX25L512ALZUI-12G | 512 Kbit, 12 MHz max clock, SOIC-8 only, no AAI programming, different BP bit encoding | Lower performance and no AAI acceleration - increases firmware update time by 2.3× | Acceptable for cost-sensitive, low-update-frequency applications where WSON footprint is not required |
Compared with SST25VF512A-33-4I-ZAE, the W25Q80DVSSIG offers higher bandwidth but sacrifices suspend functionality and pin compatibility, while the MX25L512ALZUI-12G matches density and package but lacks AAI and high-speed read - making SST25VF512A-33-4I-ZAE optimal for industrial designs needing balanced speed, reliability, and feature completeness.
Availability
SST25VF512A-33-4I-ZAE is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, smart utility meters, and automotive body electronics requiring stable component supply across extended product lifecycles.
Supply support for SST25VF512A-33-4I-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 deep expertise in embedded control and secure connectivity.
The SST25VF512A-33-4I-ZAE belongs to Microchip's legacy SST serial flash family, engineered specifically for cost-sensitive, space-constrained industrial and consumer applications demanding proven reliability and simple SPI integration.
FAQ
What is the maximum operating clock frequency supported by the SST25VF512A-33-4I-ZAE?
The SST25VF512A-33-4I-ZAE supports a maximum clock frequency of 33 MHz exclusively for High-Speed Read operations using the 0BH opcode and dummy byte. Standard Read (03H) is rated to 20 MHz. This 33 MHz capability enables faster boot code loading and reduces overall system initialization time in time-critical applications.
Does the SST25VF512A-33-4I-ZAE support both SPI Mode 0 and Mode 3?
Yes, the SST25VF512A-33-4I-ZAE natively supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). The device automatically adapts to the master's clock polarity and phase configuration - eliminating the need for external mode-selection logic or firmware workarounds during integration.
What package type is used for the SST25VF512A-33-4I-ZAE?
The SST25VF512A-33-4I-ZAE is supplied in an 8-contact WSON package measuring 5 mm × 6 mm with 0.65 mm pitch. This compact, near-chip-scale footprint reduces PCB area by ~60% compared to standard SOIC-8, making it ideal for ultra-dense industrial and portable electronics layouts.
How does the HOLD# pin function on the SST25VF512A-33-4I-ZAE?
The HOLD# pin on the SST25VF512A-33-4I-ZAE suspends ongoing SPI communication without resetting the internal address counter or requiring CE# toggling. When asserted low during an active CE# cycle, SO enters high-impedance while SI and SCK remain functional - enabling priority interrupt handling in real-time systems without corrupting flash state.
What is the purpose of the Auto Address Increment (AAI) feature in the SST25VF512A-33-4I-ZAE?
The Auto Address Increment (AAI) feature in the SST25VF512A-33-4I-ZAE allows sequential byte programming without retransmitting the address for each byte. After issuing the AFH command and first data byte, subsequent bytes are written to incrementing addresses using only AFH + data - reducing total programming time by up to 40% versus standard Byte-Program mode.
SST25VF512A-33-4I-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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-CSP
SST25VF512A-33-4I-ZAE FAQ
1.How can I place an order for SST25VF512A-33-4I-ZAE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF512A-33-4I-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-33-4I-ZAE reliable?
The price and inventory of SST25VF512A-33-4I-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-33-4I-ZAE is usually 5 days.
3.What payment methods are accepted for SST25VF512A-33-4I-ZAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF512A-33-4I-ZAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF512A-33-4I-ZAE?
SST25VF512A-33-4I-ZAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF512A-33-4I-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-33-4I-ZAE?
For technical support, including SST25VF512A-33-4I-ZAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF512A-33-4I-ZAE requirements.
6.How does Aetrix verify that SST25VF512A-33-4I-ZAE is sourced from the original manufacturer or authorized distributors?
All SST25VF512A-33-4I-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-33-4I-ZAE meets industry standards.
7.What is the process for return or replacement of SST25VF512A-33-4I-ZAE?
All SST25VF512A-33-4I-ZAE units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF512A-33-4I-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-33-4I-ZAE part is unused and in its original packaging.
Return procedure for SST25VF512A-33-4I-ZAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST25VF512A-33-4I-ZAE 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…
