My Inquiry
My Account
Microchip Technology SST25PF040CT-40V/MF
- Part No.:
- SST25PF040CT-40V/MF
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
SST25PF040CT-40V/MF.pdf
- Description:
- IC FLASH 4MBIT SPI 40MHZ 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,634
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST25PF040CT-40V/MF 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 infotainment boot code storage.
For engineers reviewing the SST25PF040CT-40V/MF datasheet, SST25PF040CT-40V/MF pinout, SST25PF040CT-40V/MF application, or SST25PF040CT-40V/MF equivalent, key selection criteria include dual-I/O timing compliance, AEC-Q100 qualification, sector/block erase granularity, USON 2×3 mm footprint, and software write protection with BPL lockdown.
Technical Context
This device implements SPI Mode 0 and Mode 3 protocols with rising-edge sampling on SI/SIO0 and falling-edge output on SO/SIO1. Its SuperFlash split-gate cell architecture enables faster erase (40 ms sector, 80 ms block) and lower total energy per operation versus conventional NOR flash.
The status register provides real-time BUSY bit polling and configurable block protection (BP0–BP2, TB, BPL) with hardware-enforced lock-down when WP# is low. HOLD# allows suspension of ongoing serial sequences without deselecting CE#, preserving internal address state.
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 - enables direct interface with 3.3 V logic without level shifting |
| Max Clock Frequency | 40 MHz - achieved using Fast-Read Dual I/O (BBH) instruction for 2× throughput vs standard Read |
| Endurance | 100,000 program/erase cycles - sufficient for firmware update logging in industrial controllers |
| Data Retention | >20 years at +85°C - validated for automotive AEC-Q100 Grade 2 (-40°C to +105°C) |
| Erase Times | Sector: 40 ms typ; Block: 80 ms typ; Chip: 250 ms typ - enables rapid field firmware recovery |
| Power Consumption | Active read: 5 mA typ; Power-down standby: 3 µA typ - critical for battery-backed IoT nodes |
Pinout & Package
Package: 8-contact USON (2 mm × 3 mm), RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout command sequence to prevent premature termination |
| SO/SIO1 | Serial Data Output / Dual I/O | Outputs odd data bits (D7,D5,D3,D1) during Dual I/O reads; functions as SIO1 in BBH mode |
| WP# | Write Protect | Enables BPL bit lock-down; when low, prevents modification of BP0–BP2, TB, and BPL in status register |
| VSS | Ground | Reference return path for all I/O and core circuitry; requires low-impedance PCB connection |
| VDD | Power Supply | 2.3–3.6 V supply input; decoupling capacitor (0.1 µF) required within 5 mm of pin |
| HOLD# | Hold Control | Suspends active SPI transaction on falling edge synchronized to SCK low; preserves address pointer |
| SCK | Serial Clock | Timing reference for all transfers; sampled on rising edge for inputs, drives outputs on falling edge |
| SI/SIO0 | Serial Data Input / Dual I/O | Inputs commands/addresses; outputs even data bits (D6,D4,D2,D0) during Dual I/O reads |
Key Features
| Feature | Design Value |
|---|---|
| Dual I/O Interface Support | Enables 40 MHz read via BBH instruction - doubles effective bandwidth over standard SPI Read (03H) |
| Flexible Erase Architecture | Independent 4 KByte sector and 64 KByte block erase - permits granular firmware patching without full chip erase |
| Hardware-Assisted Write Protection | WP# pin + BPL bit combination prevents accidental status register corruption during field updates |
| Ultra-Low Standby Current | 3 µA in power-down mode - extends battery life in always-on sensor nodes and telematics modules |
| AEC-Q100 Qualified | Validated for automotive Grade 2 (-40°C to +105°C) - suitable for engine control unit (ECU) boot memory |
Applications
| Automotive Infotainment Boot Memory | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Storing boot loader and OS kernel images in head-unit ECUs requiring fast, reliable startup after ignition cycle. IC Role / Device Role / Timing Role: Non-volatile code storage with deterministic 40 MHz Dual I/O read timing to meet <500 ms boot window. Use Value: AEC-Q100 qualification ensures operation across thermal shock cycles; 100K endurance supports OTA update rollback mechanisms. |
Use Scenario: Holding configuration parameters and firmware binaries in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Field-upgradable firmware repository with sector-erase granularity enabling partial reprogramming without system downtime. Use Value: 4 KByte uniform sectors allow safe patching of control algorithms; 3 µA power-down current reduces cabinet thermal load. |
| Medical Diagnostic Device Log Buffer | Smart Meter Firmware Vault |
Use Scenario: Capturing time-stamped sensor calibration data and fault logs in portable ultrasound units with limited board area. IC Role / Device Role / Timing Role: High-reliability data logger using Page-Program (256 B/page) and status register polling for write completion. Use Value: >20-year data retention meets FDA long-term recordkeeping mandates; USON 2×3 mm package saves space in handheld enclosures. |
Use Scenario: Securing meter firmware and tariff tables in utility smart meters subject to remote firmware updates and tamper resistance requirements. IC Role / Device Role / Timing Role: Cryptographically signed firmware vault with hardware write protection (WP# + BPL) preventing unauthorized modification. Use Value: Block-protection bits (BP0–BP2, TB) enable selective locking of bootloader region while allowing application updates. |
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 density (4 Mbit), 1.65–1.95 V or 2.7–3.6 V dual supply; no HOLD# pin; supports Quad I/O (QPI) but not Dual I/O BBH mode | Lacks HOLD# functionality and AEC-Q100 qualification; suited for consumer-grade cost-sensitive designs | Select if Quad I/O bandwidth > Dual I/O and automotive qualification is unnecessary |
| Cypress S25FL004A | 4 Mbit, 2.7–3.6 V, 50 MHz max clock; includes SFDP register; supports both standard and dual I/O but uses different opcodes (3BH only, no BBH) | No BPL lock-down via WP#; different status register layout; not AEC-Q100 qualified | Choose when SFDP-based auto-configuration is required and extended temperature range is not mandatory |
Compared with W25Q40EW and S25FL004A, the SST25PF040CT-40V/MF uniquely combines AEC-Q100 Grade 2 qualification, hardware HOLD# suspend capability, and BPL-enabled status register lockdown - making it the only option for safety-critical automotive boot memory where transaction integrity and tamper resistance are non-negotiable.
Availability
SST25PF040CT-40V/MF is available at Aetrix Electronics and suitable for automotive infotainment, industrial PLCs, and medical diagnostic devices requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant flash memory.
Supply support for SST25PF040CT-40V/MF 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 and long-term product availability.
The SST25PF040CT-40V/MF belongs to Microchip's Serial Flash 25 Series, engineered specifically for embedded code execution and data logging in automotive, industrial, and medical systems demanding AEC-Q100 compliance and ultra-low power.
FAQ
What is the maximum operating frequency supported by SST25PF040CT-40V/MF?
The SST25PF040CT-40V/MF supports up to 40 MHz clock frequency when using the Fast-Read Dual I/O (BBH) instruction. Standard Read (03H) is rated at 25 MHz, and High-Speed Read (0BH) operates at 40 MHz with a dummy byte. This 40 MHz capability is confirmed in the DS20005397E datasheet Section 5.4 and Table 5-1, and applies specifically to the SST25PF040CT-40V/MF variant in its specified voltage and temperature range.
Does SST25PF040CT-40V/MF support AEC-Q100 qualification?
Yes, the SST25PF040CT-40V/MF is explicitly AEC-Q100 qualified per the datasheet (DS20005397E, page 1). It meets Grade 2 requirements for operation from –40°C to +105°C and is intended for automotive applications including infotainment and body control modules. This qualification is part of the official device specification and applies directly to the SST25PF040CT-40V/MF marking.
What package type is used for SST25PF040CT-40V/MF?
The SST25PF040CT-40V/MF uses an 8-contact USON (Ultra Thin Small Outline No-lead) package measuring 2 mm × 3 mm, as confirmed in DS20005397E Figure 2-1 and Table 2-1. This compact RoHS-compliant package is distinct from the SOIC and WDFN variants offered in the same family and is identified by the "/MF" suffix in the part number.
How does the HOLD# pin function on SST25PF040CT-40V/MF?
The HOLD# pin on SST25PF040CT-40V/MF suspends an ongoing SPI transaction without deselecting the device or resetting the internal address pointer. Activation requires CE# to be low and HOLD# to fall synchronously with SCK low (per Figure 4-2). During hold, SO enters high-impedance while SI and SCK remain functional. Resumption occurs on rising HOLD# edge aligned with SCK low. This behavior is defined in Section 4.0.1 of DS20005397E and applies identically to SST25PF040CT-40V/MF.
What erase granularities are supported by SST25PF040CT-40V/MF?
The SST25PF040CT-40V/MF supports three erase granularities: uniform 4 KByte sectors (128 total), uniform 64 KByte overlay blocks (8 total), and full-chip erase. Sector-erase time is 40 ms typical, block-erase is 80 ms typical, and chip-erase is 250 ms typical (DS20005397E, page 1). These values are measured under standard conditions and apply directly to the SST25PF040CT-40V/MF device.
SST25PF040CT-40V/MF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-WDFN 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WDFN (5x6)
SST25PF040CT-40V/MF FAQ
1.How can I place an order for SST25PF040CT-40V/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25PF040CT-40V/MF 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/MF reliable?
The price and inventory of SST25PF040CT-40V/MF 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/MF is usually 5 days.
3.What payment methods are accepted for SST25PF040CT-40V/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25PF040CT-40V/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25PF040CT-40V/MF?
SST25PF040CT-40V/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25PF040CT-40V/MF 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/MF?
For technical support, including SST25PF040CT-40V/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25PF040CT-40V/MF requirements.
6.How does Aetrix verify that SST25PF040CT-40V/MF is sourced from the original manufacturer or authorized distributors?
All SST25PF040CT-40V/MF 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/MF meets industry standards.
7.What is the process for return or replacement of SST25PF040CT-40V/MF?
All SST25PF040CT-40V/MF units undergo pre-shipment inspection (PSI). If there is an issue with SST25PF040CT-40V/MF, 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/MF part is unused and in its original packaging.
Return procedure for SST25PF040CT-40V/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST25PF040CT-40V/MF 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…
