My Inquiry
My Account
Microchip Technology SST25VF512-20-4C-SAE
- Part No.:
- SST25VF512-20-4C-SAE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SST25VF512-20-4C-SAE.pdf
- Description:
- IC FLASH 512KBIT SPI 20MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,372
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST25VF512-20-4C-SAE 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 at 2.7–3.6 V, supports 20 MHz SPI clock (Mode 0/3), delivers 100,000 program/erase cycles, and guarantees >100 years data retention - deployed in industrial controllers, IoT edge nodes, and boot code storage.
For engineers reviewing the SST25VF512-20-4C-SAE datasheet, SST25VF512-20-4C-SAE pinout, SST25VF512-20-4C-SAE application, or SST25VF512-20-4C-SAE equivalent, key selection criteria include sector/block erase granularity (4 KB/32 KB), Auto Address Increment (AAI) programming efficiency, HOLD#/WP# hardware control, and SOIC-8 package compatibility with legacy PCB footprints.
Technical Context
The SST25VF512-20-4C-SAE implements a four-wire SPI interface (SCK, SI, SO, CE#) with dual-mode support (SPI Mode 0 and Mode 3), enabling interoperability with diverse host microcontrollers. Its SuperFlash technology uses split-gate cells and thick-oxide tunneling to achieve faster erase times (sector: 18 ms typ.) and lower total energy per operation versus conventional NOR flash.
Internal architecture includes a software status register with BUSY/WEL/BP0/BP1/BPL/AAI bits, hardware HOLD# for transaction suspension without CE# deassertion, and WP#-controlled lock-down of block protection bits. Memory is organized into uniform 4 KByte sectors and 32 KByte overlay blocks, supporting flexible partial reprogramming without full chip erase.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64 KByte) - sufficient for bootloader images, calibration tables, or firmware patches in resource-limited devices. |
| Interface | SPI-compatible 4-wire (SCK/SI/SO/CE#) - eliminates parallel bus routing, reduces PCB layer count and pin count on host MCU. |
| Max Clock Frequency | 20 MHz - enables ~2.5 MB/s sequential read throughput, suitable for fast boot and firmware update scenarios. |
| Erase Granularity | Uniform 4 KByte sectors and 32 KByte overlay blocks - allows targeted updates without disturbing adjacent functional code sections. |
| Endurance | 100,000 program/erase cycles (typ.) - supports field firmware upgrades over product lifetime in industrial equipment. |
| Data Retention | >100 years at +25°C - ensures long-term reliability for unattended deployments like smart meters or remote sensors. |
| Supply Voltage | 2.7–3.6 V - compatible with single-supply 3.3 V systems, eliminating need for voltage translation or LDOs. |
| Active Read Current | 7 mA (typ.) - minimizes power draw during boot sequence or configuration loading in battery-backed applications. |
Pinout & Package
Package: 8-lead SOIC (4.9 mm × 6.0 mm), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout command execution; high-to-low transition initiates instruction latch. |
| SO | Serial Data Output | Tri-state output; drives data on falling SCK edge; enters high-impedance during HOLD# or write operations. |
| WP# | Write Protect | Hardware enable for status register lock-down (BPL bit); when low, prevents modification of BP0/BP1 if BPL=1. |
| VSS | Ground | Reference return path for all digital and core logic; requires low-impedance connection to system ground plane. |
| VDD | Power Supply | 2.7–3.6 V supply input; decoupling capacitor (0.1 µF) required near pin for noise suppression during erase/program. |
| HOLD# | Hold Control | Pauses ongoing SPI transaction without resetting internal address pointer or clock state; active-low, synchronous with SCK low phase. |
| SCK | Serial Clock | Master-generated timing signal; rising edge latches SI, falling edge shifts out SO; supports Mode 0 (idle low) and Mode 3 (idle high). |
| SI | Serial Data Input | Command/address/data input; sampled on rising SCK edge; high-impedance when HOLD# active and CE# low. |
Key Features
| Feature | Design Value |
|---|---|
| Auto Address Increment (AAI) | Reduces multi-byte programming time by eliminating repeated address transmission - critical for rapid firmware patching. |
| Flexible Block Protection | Software-configurable BP0/BP1 bits protect 0%, 25%, 50%, or 100% of memory; BPL bit locks protection settings against accidental overwrite. |
| HOLD# Pin Functionality | Enables interruption of SPI sequences (e.g., during interrupt servicing) without losing context - preserves address pointer and avoids reinitialization overhead. |
| SuperFlash Technology | Delivers 70 ms chip-erase (vs. >1 s in standard NOR), 14 µs byte-program, and superior endurance/reliability via split-gate cell design. |
| Low Standby Current | 8 µA typical - extends battery life in always-on sensor nodes or backup memory applications where periodic wake-up occurs. |
Applications
| Industrial PLC Firmware Storage | IoT Edge Device Configuration |
|---|---|
Use Scenario: Storing ladder logic firmware and I/O mapping tables in programmable logic controllers subject to frequent field updates and harsh operating temperatures. IC Role / Device Role / Timing Role: Non-volatile boot memory holding executable code executed directly by ARM Cortex-M host MCU during cold start. Use Value: 4 KByte sector erase enables updating only modified function blocks without erasing entire firmware image - reducing downtime and wear on adjacent sectors. | Use Scenario: Holding device-specific credentials, sensor calibration profiles, and OTA update staging buffers in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Configuration and parameter storage accessed via SPI during initialization and background maintenance cycles. Use Value: HOLD# pin allows host MCU to suspend flash access during real-time sensor sampling - ensuring deterministic latency for time-critical ADC reads. |
| Medical Diagnostic Bootloader | Automotive Infotainment Settings |
Use Scenario: Securely storing signed bootloader images and cryptographic keys in portable ultrasound units requiring FDA-compliant data integrity. IC Role / Device Role / Timing Role: Trusted boot source verified prior to loading application firmware; WP#-enabled lock-down prevents runtime tampering. Use Value: >100-year data retention and 100,000-cycle endurance ensure reliable operation across 10+ year product lifecycle without recalibration or replacement. | Use Scenario: Persisting user preferences (display brightness, audio EQ, navigation history) in automotive head units exposed to wide thermal cycling (-40°C to +105°C). IC Role / Device Role / Timing Role: Parameter EEPROM replacement providing higher density and faster write performance than legacy serial EEPROMs. Use Value: 32 KByte overlay block erase allows atomic update of full settings dataset - avoiding corruption during power loss mid-write. |
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 density (8× larger), 85 MHz max clock, supports dual/quad SPI; no HOLD# pin; different status register layout. | Better suited for high-speed code XIP or large firmware images; lacks hardware hold capability for interrupt-safe operation. | Select when bandwidth >20 MHz or density >512 Kbit is required; verify host SPI controller supports enhanced modes. |
| MX25L512CM1I-12G | Same 512 Kbit density, 104 MHz max clock, quad SPI capable, built-in security features (volatile/non-volatile lock bits); different pinout (SOIC-8 but SI/SO swapped). | Offers faster read throughput and advanced security; incompatible pin-for-pin due to SI/SO swap - requires PCB revision. | Choose for enhanced security or higher read speed; redesign needed for SI/SO routing; not drop-in replaceable. |
Compared with AT25DF041A-SSH-T and MX25L512CM1I-12G, the SST25VF512-20-4C-SAE provides optimal balance of proven reliability, hardware HOLD#/WP# control, and SOIC-8 footprint compatibility - making it ideal for cost-sensitive, space-constrained, and interrupt-driven embedded designs where pin compatibility and deterministic timing are prioritized over raw speed or density.
Availability
SST25VF512-20-4C-SAE is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive infotainment systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for SST25VF512-20-4C-SAE 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 emphasis on reliability, longevity, and embedded system integration.
The SST25VF512-20-4C-SAE belongs to Microchip's legacy SST serial flash product line, engineered for cost-effective, low-power, and pin-efficient non-volatile storage in resource-constrained microcontroller-based systems.
FAQ
What is the maximum SPI clock frequency supported by the SST25VF512-20-4C-SAE?
The SST25VF512-20-4C-SAE supports a maximum SPI clock frequency of 20 MHz, as specified in its datasheet DS25076A. This applies to both Mode 0 and Mode 3 SPI configurations. At this rate, the device achieves typical read throughput of approximately 2.5 MB/s, sufficient for fast boot and firmware loading in embedded applications. Exceeding 20 MHz may result in timing violations and unreliable communication.
Does the SST25VF512-20-4C-SAE support hardware write protection via the WP# pin?
Yes, the SST25VF512-20-4C-SAE uses the WP# pin to enable hardware-controlled lock-down of the Block-Protection-Lock (BPL) bit in the status register. When WP# is driven low, the BPL bit determines whether BP0/BP1 can be modified - if BPL = 1, those bits become read-only. This provides robust, physical-layer protection against accidental firmware corruption during field operation or debug sessions.
Can the SST25VF512-20-4C-SAE be used in place of a standard EEPROM for configuration storage?
Yes, the SST25VF512-20-4C-SAE is commonly substituted for serial EEPROM in configuration storage roles due to its higher density (64 KByte vs. typical 2–64 Kbit EEPROM), faster write speeds (14 µs byte-program vs. 5–10 ms EEPROM writes), and lower cost-per-bit. However, unlike EEPROM, it requires sector/block erase before reprogramming - so applications must manage erase boundaries and implement wear leveling if frequent small updates occur.
What package type is used for the SST25VF512-20-4C-SAE?
The SST25VF512-20-4C-SAE is supplied in an 8-lead SOIC package measuring 4.9 mm × 6.0 mm, with standard gull-wing leads and RoHS-compliant lead-free finish. This footprint matches industry-standard JEDEC MS-012AC, enabling direct replacement in existing PCB layouts designed for similar SPI flash or EEPROM devices without redesign.
How does the HOLD# pin function during active SPI communication with the SST25VF512-20-4C-SAE?
The HOLD# pin on the SST25VF512-20-4C-SAE suspends ongoing SPI transactions synchronously with the SCK signal - entering hold mode when HOLD# falls coincident with SCK low, and resuming when HOLD# rises coincident with SCK low. During hold, SO goes high-impedance while SI and SCK remain valid, preserving internal address and command state. This allows the host MCU to service interrupts without aborting or reinitializing flash access.
SST25VF512-20-4C-SAE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 20 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
SST25VF512-20-4C-SAE FAQ
1.How can I place an order for SST25VF512-20-4C-SAE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF512-20-4C-SAE 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 SST25VF512-20-4C-SAE reliable?
The price and inventory of SST25VF512-20-4C-SAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST25VF512-20-4C-SAE is usually 5 days.
3.What payment methods are accepted for SST25VF512-20-4C-SAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF512-20-4C-SAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF512-20-4C-SAE?
SST25VF512-20-4C-SAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF512-20-4C-SAE 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 SST25VF512-20-4C-SAE?
For technical support, including SST25VF512-20-4C-SAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF512-20-4C-SAE requirements.
6.How does Aetrix verify that SST25VF512-20-4C-SAE is sourced from the original manufacturer or authorized distributors?
All SST25VF512-20-4C-SAE 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 SST25VF512-20-4C-SAE meets industry standards.
7.What is the process for return or replacement of SST25VF512-20-4C-SAE?
All SST25VF512-20-4C-SAE units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF512-20-4C-SAE, 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 SST25VF512-20-4C-SAE part is unused and in its original packaging.
Return procedure for SST25VF512-20-4C-SAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST25VF512-20-4C-SAE 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…
