My Inquiry
My Account
Microchip Technology SST25PF040CT-40V/NP18GVAO
- Part No.:
- SST25PF040CT-40V/NP18GVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
SST25PF040CT-40V/NP18GVAO.pdf
- Description:
- IC FLASH 4MBIT SPI 40MHZ 8USON
- Quantity:
- Payment:
- Shipping:
Inventory:4,270
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST25PF040CT-40V/NP18GVAO from Microchip Technology is a 4 Mbit SPI serial flash memory IC designed for embedded code storage and data logging in space-constrained systems. It operates from a single 2.3–3.6 V supply, supports 40 MHz high-speed read via Fast-Read Dual I/O (BBH), delivers 100,000 program/erase cycles, and retains data for >20 years - deployed in automotive instrument clusters requiring AEC-Q100 qualification.
For engineers reviewing the SST25PF040CT-40V/NP18GVAO datasheet, SST25PF040CT-40V/NP18GVAO pinout, SST25PF040CT-40V/NP18GVAO application, or SST25PF040CT-40V/NP18GVAO equivalent, key selection criteria include dual-I/O throughput at 40 MHz, 256-byte page programming, uniform 4 KByte sector erase, industrial-plus temperature range (–40°C to +105°C), and RoHS-compliant 8-contact USON (2 mm × 3 mm) packaging.
Technical Context
This device implements a four-wire SPI interface compatible with Mode 0 and Mode 3 clock polarity/phasing, using CE#, SCK, SI/SIO0, and SO/SIO1 signals. Its SuperFlash technology employs a split-gate cell with thick-oxide tunneling injector, enabling lower program current and shorter erase times versus conventional flash.
It integrates dedicated hardware control logic for status register polling (BUSY bit), hold functionality (HOLD#), write protection (WP#), and flexible block-protection configuration via BP0–BP2/TB/BPL bits - all managed through standardized 8-bit opcodes including 02H (Page-Program), BBH (Fast-Read Dual I/O), and D8H (64 KByte Block-Erase).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KByte), organized as 128 × 4 KByte sectors and 8 × 64 KByte overlay blocks |
| Supply Voltage | 2.3–3.6 V single supply - enables direct interfacing with 3.3 V microcontrollers without level shifting |
| Max Clock Frequency | 40 MHz - supports Fast-Read Dual Output (3BH) and Fast-Read Dual I/O (BBH) for doubled data throughput |
| Page Size | 256 bytes - defines minimum programmable unit; partial-page writes wrap within boundary |
| Erase Performance | Sector-erase: 40 ms typical; Block-erase: 80 ms typical; Chip-erase: 250 ms typical - reduces firmware update latency |
| Data Retention | >20 years at +85°C - validated for long-life industrial and automotive deployments |
| Endurance | 100,000 program/erase cycles - sufficient for frequent over-the-air (OTA) firmware updates |
| Operating Temperature | –40°C to +105°C (Industrial Plus grade) - qualified per AEC-Q100 Grade 2 for under-hood applications |
Pinout & Package
Package: 8-contact USON (2 mm × 3 mm), lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout command sequence; drives device into standby when high |
| SO/SIO1 | Serial Data Output / Dual I/O | Outputs odd data bits (D7,D5,D3,D1) during Dual I/O reads; functions as input for address bits in BBH mode |
| WP# | Write Protect | Enables lock-down of status register BPL bit; disables software write protection when pulled high |
| VSS | Ground | Reference return path for all digital and analog circuitry; requires low-impedance PCB connection |
| VDD | Power Supply | 2.3–3.6 V core and I/O supply; decoupling capacitor (0.1 µF) required near pin |
| HOLD# | Hold Control | Suspends ongoing SPI transaction without deselecting device; requires synchronized edge with SCK low state |
| SCK | Serial Clock | Timing reference for all SPI transfers; sampled on rising edge for inputs, data shifted out on falling edge |
| SI/SIO0 | Serial Data Input / Dual I/O | Inputs command/address/data; outputs even data bits (D6,D4,D2,D0) in Dual I/O mode; bidirectional in BBH |
Key Features
| Feature | Design Value |
|---|---|
| Dual I/O Interface Support | Enables 40 MHz Fast-Read Dual Output (3BH) and Fast-Read Dual I/O (BBH), doubling effective bandwidth vs standard SPI |
| Flexible Erase Architecture | Independent 4 KByte sector and 64 KByte block erase - allows granular firmware partitioning and wear leveling |
| Hardware Write Protection | WP# pin + status register BPL bit provide tamper-resistant lockdown of block-protection configuration |
| Ultra-Low Power Modes | 3 µA power-down standby current - extends battery life in always-on telematics modules |
| SuperFlash Technology | Split-gate cell design reduces program current and erase time, lowering total energy per operation by ~40% vs standard NOR flash |
| AEC-Q100 Qualification | Automotive-grade reliability validation - meets stress test requirements for temperature cycling, HTOL, and ESD |
Applications
| Automotive Instrument Cluster | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Storing calibrated gauge graphics, boot firmware, and driver configuration tables in digital dashboards. IC Role / Device Role / Timing Role: Non-volatile code and parameter storage with fast random-access read capability via 40 MHz Dual I/O. Use Value: Enables sub-100 ms boot time and real-time display updates while meeting AEC-Q100 Grade 2 thermal requirements. |
Use Scenario: Holding ladder logic firmware, I/O mapping tables, and field-upgradable safety routines in modular controllers. IC Role / Device Role / Timing Role: Reliable, sector-erasable program memory supporting secure OTA updates without full chip reflash. Use Value: Reduces maintenance downtime via selective 4 KByte sector erase and 100,000-cycle endurance. |
| Medical Infusion Pump Log | Smart Energy Meter Data Buffer |
Use Scenario: Recording dose history, error logs, and calibration timestamps with guaranteed retention over 10+ years. IC Role / Device Role / Timing Role: High-reliability data logger using page-program mode and hardware WP# to prevent accidental overwrite. Use Value: Meets IEC 62304 Class C data integrity requirements with >20-year retention at +85°C. |
Use Scenario: Capturing time-stamped consumption data during grid outages using ultra-low-power deep power-down mode. IC Role / Device Role / Timing Role: Low-energy non-volatile buffer with 3 µA power-down current and fast wake-up from DPD (ABH instruction). Use Value: Extends backup battery life to >5 years while supporting 15-minute interval logging during mains failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q40EW | Same 4 Mbit density, 40 MHz max clock, and 256-byte page; uses standard SPI (no Dual I/O support); 8-pin SOIC only | Lacks Fast-Read Dual I/O (BBH) and HOLD# pin; not AEC-Q100 qualified | Select for cost-sensitive consumer designs where dual-I/O bandwidth and automotive qualification are unnecessary |
| Cypress S25FL004A | 4 Mbit, 50 MHz max clock, supports QPI mode; different status register layout and erase timing (TSE = 50 ms) | Requires QPI enable sequence; no HOLD# function; industrial temp only (–40°C to +85°C) | Choose when higher clock speed and quad-SPI compatibility outweigh need for HOLD# and extended temperature range |
Compared with SST25PF040CT-40V/NP18GVAO, W25Q40EW offers lower cost but sacrifices dual-I/O throughput and automotive qualification, while S25FL004A provides faster clocking and QPI mode at the expense of HOLD# functionality and industrial-plus temperature support.
Availability
SST25PF040CT-40V/NP18GVAO is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLC firmware storage, medical infusion pump logging, and smart energy meter data buffering requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SST25PF040CT-40V/NP18GVAO 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 embedded control and reliability-critical applications.
The SST25PF040CT-40V/NP18GVAO belongs to Microchip's Serial Flash 25 Series, engineered for high-performance, low-power, and AEC-Q100-qualified code and data storage in automotive, industrial, and medical systems.
FAQ
What is the maximum operating frequency supported by SST25PF040CT-40V/NP18GVAO?
SST25PF040CT-40V/NP18GVAO supports up to 40 MHz for high-speed read operations using Fast-Read Dual Output (3BH) and Fast-Read Dual I/O (BBH) instructions. Standard Read (03H) is rated to 25 MHz. The 40 MHz capability is enabled by dual-data-line transfer, effectively doubling throughput versus single-I/O modes - critical for boot-time performance in automotive ECUs.
Does SST25PF040CT-40V/NP18GVAO support AEC-Q100 qualification?
Yes, SST25PF040CT-40V/NP18GVAO is AEC-Q100 qualified (Grade 2, –40°C to +105°C), as confirmed in the official Microchip datasheet DS20005397E. This qualification covers temperature cycling, high-temperature operating life (HTOL), and electrostatic discharge (ESD) testing - making it suitable for under-dash and under-hood automotive applications.
What package type is used for SST25PF040CT-40V/NP18GVAO?
SST25PF040CT-40V/NP18GVAO uses an 8-contact USON (Ultra Thin Small Outline No-lead) package measuring 2 mm × 3 mm. This RoHS-compliant, lead-free package features exposed pad thermal enhancement and is optimized for high-density PCB layouts in space-constrained automotive and portable industrial modules.
How does the HOLD# pin function in SST25PF040CT-40V/NP18GVAO?
The HOLD# pin in SST25PF040CT-40V/NP18GVAO suspends an active SPI transaction without deselecting the device or resetting internal state. When asserted low (synchronized to SCK low), it places SO in high-impedance while preserving address and command context - enabling priority interrupt handling in real-time systems without bus arbitration overhead.
What is the page size and erase granularity of SST25PF040CT-40V/NP18GVAO?
SST25PF040CT-40V/NP18GVAO has a fixed 256-byte page size for programming and supports two uniform erase granularities: 4 KByte sectors (128 total) and 64 KByte overlay blocks (8 total). Sector-erase completes in 40 ms typical; block-erase in 80 ms typical - enabling efficient firmware delta updates and wear-leveling algorithms.
SST25PF040CT-40V/NP18GVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 40 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-USON (2x3)
SST25PF040CT-40V/NP18GVAO FAQ
1.How can I place an order for SST25PF040CT-40V/NP18GVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25PF040CT-40V/NP18GVAO 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 SST25PF040CT-40V/NP18GVAO reliable?
The price and inventory of SST25PF040CT-40V/NP18GVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST25PF040CT-40V/NP18GVAO is usually 5 days.
3.What payment methods are accepted for SST25PF040CT-40V/NP18GVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25PF040CT-40V/NP18GVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25PF040CT-40V/NP18GVAO?
SST25PF040CT-40V/NP18GVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25PF040CT-40V/NP18GVAO 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 SST25PF040CT-40V/NP18GVAO?
For technical support, including SST25PF040CT-40V/NP18GVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25PF040CT-40V/NP18GVAO requirements.
6.How does Aetrix verify that SST25PF040CT-40V/NP18GVAO is sourced from the original manufacturer or authorized distributors?
All SST25PF040CT-40V/NP18GVAO 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 SST25PF040CT-40V/NP18GVAO meets industry standards.
7.What is the process for return or replacement of SST25PF040CT-40V/NP18GVAO?
All SST25PF040CT-40V/NP18GVAO units undergo pre-shipment inspection (PSI). If there is an issue with SST25PF040CT-40V/NP18GVAO, 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 SST25PF040CT-40V/NP18GVAO part is unused and in its original packaging.
Return procedure for SST25PF040CT-40V/NP18GVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST25PF040CT-40V/NP18GVAO 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…
