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Microchip Technology SST25VF020B-80-4I-Q3AE
- Part No.:
- SST25VF020B-80-4I-Q3AE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
SST25VF020B-80-4I-Q3AE.pdf
- Description:
- IC FLASH 2MBIT SPI 80MHZ 8USON
- Quantity:
- Payment:
- Shipping:
Inventory:3,876
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Product details
Overview
SST25VF020B-80-4I-Q3AE from Microchip Technology is a 2-Mbit SPI serial Flash memory IC designed for embedded firmware storage and code execution in resource-constrained systems. It operates from a single 2.7V–3.6V supply, supports up to 80 MHz high-speed read, delivers 100,000 program/erase cycles, and retains data for >100 years - deployed in industrial microcontroller boot loaders and IoT sensor node configuration storage.
For engineers reviewing the SST25VF020B-80-4I-Q3AE datasheet, SST25VF020B-80-4I-Q3AE pinout, SST25VF020B-80-4I-Q3AE application, or SST25VF020B-80-4I-Q3AE equivalent, key selection criteria include SPI Mode 0/3 compatibility, industrial temperature range (−40°C to +85°C), 8-lead SOIC package with HOLD#/WP# control pins, and AAI programming for accelerated firmware updates.
Technical Context
The SST25VF020B-80-4I-Q3AE implements a four-wire SPI interface with dual-mode clocking (Mode 0 and Mode 3), enabling interoperability with diverse host controllers. Its SuperFlash® split-gate CMOS technology enables fast erase (18 ms sector, 35 ms chip) and byte programming (7 µs) while maintaining low active current (10 mA typical) and standby current (5 µA typical).
It integrates dual software status registers - one for block protection (BP1/BP0/BPL) and another for top/bottom sector lock (TSP/BSP) - allowing granular, non-volatile write protection without external hardware. The HOLD# and WP# pins provide hardware-level suspend and lock-down control independent of SPI command flow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256 Kbytes), organized as uniform 4-Kbyte sectors with 32-Kbyte and 64-Kbyte overlay blocks - enables flexible firmware partitioning and OTA update staging. |
| Supply Voltage | 2.7V–3.6V single supply - compatible with 3.3V logic systems and eliminates need for level shifters or auxiliary regulators. |
| Max Clock Frequency | 80 MHz (High-Speed Read mode) - reduces instruction fetch latency in XIP (execute-in-place) applications. |
| Endurance | 100,000 program/erase cycles - supports frequent field firmware updates in industrial gateways and edge devices. |
| Data Retention | >100 years at +85°C - ensures long-term reliability in unattended infrastructure equipment. |
| Operating Temp | −40°C to +85°C (Industrial grade) - qualified for deployment in automotive ECUs, factory automation PLCs, and outdoor telecom units. |
| Active Read Current | 10 mA typical at 80 MHz - enables low-power operation during burst reads in battery-backed systems. |
| Standby Current | 5 µA typical - minimizes quiescent power draw in always-on IoT endpoints and sleep-mode microcontrollers. |
Pinout & Package
Package: 8-Lead SOIC (150 mil), RoHS-compliant, industrial temperature grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout SPI command sequence - enables multi-device bus sharing with daisy-chained or decoded addressing. |
| SO | Serial Data Output | Tri-state output; shifts data on falling SCK edge; reconfigurable as RY/BY# during AAI programming - supports both standard SPI reads and hardware busy polling. |
| WP# | Write Protect | Hardware lock-down enable for STATUS register BPL bit - prevents accidental modification of block protection settings during system power transitions. |
| VSS | Ground | Reference return path for all digital and analog circuitry - requires low-impedance connection to PCB ground plane for noise immunity. |
| VDD | Power Supply | 2.7V–3.6V core and I/O supply - must be decoupled with ≥0.1 µF ceramic capacitor near pin for stable high-frequency operation. |
| HOLD# | Hold Control | Pauses ongoing SPI transaction without resetting internal address pointer - allows host CPU to service interrupts or reallocate resources mid-transfer. |
| SCK | Serial Clock | Master-generated timing signal; latches SI on rising edge, drives SO on falling edge - supports both Mode 0 (SCK idle low) and Mode 3 (SCK idle high). |
| SI | Serial Data Input | Command/address/data input; sampled on rising SCK edge - accepts opcodes (e.g., 03H Read, 0BH High-Speed Read, 20H Sector Erase) and payload bytes. |
Key Features
| Feature | Design Value |
|---|---|
| Auto Address Increment (AAI) Programming | Reduces total firmware programming time by eliminating per-byte address retransmission - critical for rapid field updates in production test and remote maintenance. |
| Dual Status Registers | Separate STATUS and STATUS Register 1 allow independent control of block-level (BP1/BP0) and sector-level (TSP/BSP) write protection - enables secure bootloader + user-application partitioning. |
| Hardware End-of-Write Detection | EBSY/DBSY commands configure SO pin as RY/BY# during AAI - replaces software polling with hardware-ready signaling, cutting CPU overhead in real-time systems. |
| Flexible Erase Granularity | Supports 4-Kbyte sector, 32-Kbyte block, and 64-Kbyte block erase - permits precise wear leveling and partial image recovery without full chip reprogramming. |
| Industrial Temperature Range | Qualified from −40°C to +85°C with full parameter guarantees - eliminates derating concerns in harsh environments like motor drives and railway signaling. |
Applications
| Boot Code Storage | Firmware Configuration |
|---|---|
Use Scenario: Storing boot loader and initial firmware image for ARM Cortex-M4 microcontrollers in industrial HMIs. IC Role / Device Role / Timing Role: Non-volatile code storage accessed via SPI XIP during cold start; supports 80 MHz high-speed read for sub-100ms boot time. Use Value: Eliminates external parallel NOR flash, reducing PCB area and BOM count while maintaining deterministic boot latency. | Use Scenario: Holding calibration data, network credentials, and device-specific parameters in smart metering modules. IC Role / Device Role / Timing Role: Parameter repository with sector-level write protection; uses WP# pin to prevent corruption during brown-out events. Use Value: Ensures persistent, tamper-resistant storage of mission-critical settings across 10+ year field deployments. |
| OTA Update Buffer | Secure Boot Key Storage |
Use Scenario: Acting as temporary download buffer for encrypted firmware images in cellular-connected asset trackers. IC Role / Device Role / Timing Role: Dual-bank staging area; leverages AAI programming and 4-Kbyte sector erase for atomic image swap. Use Value: Enables zero-downtime firmware upgrades with rollback capability, meeting ISO/SAE 21434 cybersecurity requirements. | Use Scenario: Storing asymmetric key pairs and root-of-trust certificates in medical diagnostic equipment. IC Role / Device Role / Timing Role: Secure non-volatile storage with BPL-locked STATUS register and TSP/BSP sector lockdown. Use Value: Prevents unauthorized modification of cryptographic assets through combined hardware (WP#) and software (BPL) protection layers. |
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 |
|---|---|---|---|
| AT25DF021A-SSH-T | 2 Mbit density, 85 MHz max read, 100,000 cycles, but uses different status register layout and lacks AAI programming. | No Auto Address Increment support - requires full address retransmission per byte, increasing OTA update time by ~3×. | Select when legacy Atmel ecosystem integration is required and AAI is not needed. |
| W25Q20EWUXIE | 2 Mbit density, 133 MHz max read, Quad SPI support, but industrial temp range only up to +85°C and no HOLD# pin. | Lacks hardware HOLD# functionality - host must manage transaction suspension in software, increasing interrupt latency risk. | Select when higher throughput via Quad SPI is prioritized and HOLD# is not used in the system architecture. |
Compared with AT25DF021A-SSH-T and W25Q20EWUXIE, the SST25VF020B-80-4I-Q3AE uniquely combines industrial temperature qualification, hardware HOLD#/WP# pins, and AAI programming - making it optimal for deterministic, low-latency, field-upgradable embedded systems where robustness and update efficiency are co-prioritized.
Availability
SST25VF020B-80-4I-Q3AE is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, and medical device firmware storage requiring stable component supply and long-term lifecycle assurance.
Supply support for SST25VF020B-80-4I-Q3AE 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 Inc. is a leading provider of microcontrollers, analog components, and Flash memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The SST25VF020B-80-4I-Q3AE belongs to Microchip's 25-series Serial Flash family, engineered specifically for cost-sensitive, space-constrained embedded applications demanding reliable non-volatile storage with industrial-grade environmental resilience.
FAQ
What is the maximum clock frequency supported by the SST25VF020B-80-4I-Q3AE during read operations?
The SST25VF020B-80-4I-Q3AE supports up to 80 MHz during High-Speed Read operations using the 0BH opcode and dummy cycle. Standard Read (03H) is rated to 33 MHz. This 80 MHz capability directly reduces instruction fetch latency in execute-in-place (XIP) configurations, improving real-time responsiveness in microcontroller-based systems. The "80" in the part number explicitly denotes this speed grade.
Does the SST25VF020B-80-4I-Q3AE support SPI Mode 0 and Mode 3 simultaneously?
Yes, the SST25VF020B-80-4I-Q3AE is fully compatible with both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1). The device detects the idle state of SCK upon CE# activation and adapts accordingly. This dual-mode support ensures seamless integration with a wide range of host processors - including legacy MCUs that default to Mode 0 and newer SoCs optimized for Mode 3 - without requiring hardware modifications.
How does the HOLD# pin function during an active SPI transaction in the SST25VF020B-80-4I-Q3AE?
The HOLD# pin in the SST25VF020B-80-4I-Q3AE suspends an ongoing SPI sequence without resetting the internal address pointer or command state. When HOLD# is asserted low while CE# is active, SO enters high-impedance and SI/SCK are ignored until HOLD# is de-asserted. This allows the host processor to service time-critical interrupts or reassign resources mid-transfer - a feature critical for deterministic real-time systems where bus arbitration cannot incur full transaction restart overhead.
What write protection mechanisms are implemented in the SST25VF020B-80-4I-Q3AE?
The SST25VF020B-80-4I-Q3AE implements three layered write protection mechanisms: (1) Hardware WP# pin enabling BPL lock-down of STATUS register bits; (2) Software-configurable BP1/BP0 bits for 0–100% memory array protection; and (3) Independent TSP/BSP bits in STATUS Register 1 for top/bottom sector locking. These features allow secure partitioning of bootloader, application, and configuration regions - essential for certified medical and industrial firmware architectures.
Is the SST25VF020B-80-4I-Q3AE pin-compatible with earlier SST25VF020 variants?
Yes, the SST25VF020B-80-4I-Q3AE maintains identical 8-lead SOIC pinout, electrical characteristics, and command set with prior SST25VF020 revisions (e.g., SST25VF020), including CE#, SO, WP#, VSS, VDD, HOLD#, SCK, and SI. The "B" suffix denotes enhanced performance (80 MHz vs. 50 MHz), but no pinout or protocol changes were introduced - enabling drop-in replacement in existing designs without layout or firmware modifications.
SST25VF020B-80-4I-Q3AE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 80 MHz
- Write Cycle Time - Word, Page:
- 10µs
- 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-USON (3x2)
SST25VF020B-80-4I-Q3AE FAQ
1.How can I place an order for SST25VF020B-80-4I-Q3AE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF020B-80-4I-Q3AE 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 SST25VF020B-80-4I-Q3AE reliable?
The price and inventory of SST25VF020B-80-4I-Q3AE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST25VF020B-80-4I-Q3AE is usually 5 days.
3.What payment methods are accepted for SST25VF020B-80-4I-Q3AE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF020B-80-4I-Q3AE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF020B-80-4I-Q3AE?
SST25VF020B-80-4I-Q3AE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF020B-80-4I-Q3AE 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 SST25VF020B-80-4I-Q3AE?
For technical support, including SST25VF020B-80-4I-Q3AE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF020B-80-4I-Q3AE requirements.
6.How does Aetrix verify that SST25VF020B-80-4I-Q3AE is sourced from the original manufacturer or authorized distributors?
All SST25VF020B-80-4I-Q3AE 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 SST25VF020B-80-4I-Q3AE meets industry standards.
7.What is the process for return or replacement of SST25VF020B-80-4I-Q3AE?
All SST25VF020B-80-4I-Q3AE units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF020B-80-4I-Q3AE, 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 SST25VF020B-80-4I-Q3AE part is unused and in its original packaging.
Return procedure for SST25VF020B-80-4I-Q3AE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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