My Inquiry
My Account
STMicroelectronics M95512-DFDW6TP
- Part No.:
- M95512-DFDW6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M95512-DFDW6TP.pdf
- Description:
- IC EEPROM 512KBIT SPI 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,443
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
M95512-DFDW6TP from STMicroelectronics is a 512-Kbit (64-Kbyte) serial SPI EEPROM with 1.7 V to 5.5 V single-supply operation, 128-byte page size, and an additional lockable 128-byte Identification page. It supports 16 MHz clock speed, delivers ≤5 ms byte/page write time, and guarantees >4 million write cycles and >200-year data retention. Used in industrial sensor calibration storage and embedded firmware parameter retention where low-voltage operation and secure configuration locking are required.
For engineers reviewing the M95512-DFDW6TP datasheet, M95512-DFDW6TP pinout, M95512-DFDW6TP application, or M95512-DFDW6TP equivalent, key selection criteria include its 1.7 V minimum VCC, Identification page lockability, quarter/half/whole-array hardware write protection via W pin and BP bits, and ECOPACK2-compliant WLSCP8 (1.289 × 1.955 mm) package for space-constrained PCBs.
Technical Context
This SPI EEPROM implements a synchronous serial interface compliant with CPOL=0/CPHA=0 and CPOL=1/CPHA=1 modes, latching input on C's rising edge and outputting data on its falling edge. Internal high-voltage generation enables byte-level erasure and programming without external circuitry.
The device integrates a nonvolatile Status register with SRWD, BP1/BP0, WEL, and WIP bits - enabling configurable software write protection and real-time write-in-progress monitoring. The dedicated Identification page (addressed via RDID/WRID instructions) supports permanent read-only locking after initial provisioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 512 Kbit (65536 × 8), directly addressable as 64-Kbyte linear array |
| Supply voltage range | 1.7 V to 5.5 V - enables direct interfacing with 1.8 V logic and legacy 3.3/5 V systems |
| Max clock frequency | 16 MHz - supports ≤62.5 ns clock period for high-throughput configuration reads/writes |
| Write endurance | >4 million cycles - ensures reliable field updates over product lifetime in telemetry or calibration use cases |
| Data retention | >200 years at 25 °C - eliminates need for periodic refresh in unpowered storage applications |
| Operating temperature | −40 °C to +85 °C - qualified for industrial-grade deployment without derating |
| Page size | 128 bytes - aligns with common MCU DMA buffer sizes and minimizes partial-page write overhead |
Pinout & Package
Package: WLSCP8 (WLCSP, 1.289 × 1.955 mm, 8-bump array, ECOPACK2-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply | 1.7–5.5 V main supply; requires local 10–100 nF decoupling |
| VSS | Ground reference | Return path for all signals and internal charge pump; must be low-impedance |
| C | Serial clock input | Edge-triggered timing source; sampled on rising edge for input, drives Q on falling edge |
| D | Serial data input | MSB-first instruction/address/data input; latched on rising edge of C |
| Q | Serial data output | MSB-first read data output; valid on falling edge of C; high-Z when deselected or in HOLD |
| S | Chip select input | Active-low enable; edge-sensitive reset behavior prevents spurious writes at power-up |
| W | Hardware write protect | Freezes BP/SRWD bits when pulled low with SRWD=1 - enables irreversible status register lockdown |
| HOLD | Communication pause | Halts ongoing SPI transfer without deselecting device; Q goes high-Z, D/C ignored |
Key Features
| Feature | Design Value |
|---|---|
| Identification page (128 B) | Dedicated memory region with LID instruction for permanent read-only locking - ideal for storing cryptographic keys or calibrated coefficients |
| Multi-level write protection | Configurable via BP1/BP0 bits (none/quarter/half/full array) plus W pin + SRWD bit - enables hierarchical security for boot code vs. runtime parameters |
| Low-voltage operation | 1.7 V minimum VCC - supports direct connection to 1.8 V I/O domains without level shifters |
| Enhanced ESD robustness | >4 kV HBM - reduces risk of field failure during handling or system integration |
| ECOPACK2 packaging | Halogen-free, RoHS-compliant WLSCP8 footprint - meets modern environmental compliance and miniaturization requirements |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
|
Use Scenario: Storing factory-calibrated offset/gain coefficients and temperature compensation tables in pressure or gas sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with secure write-lock capability post-calibration. Use Value: Eliminates need for external OTP or flash; Identification page lock prevents accidental overwrite of certified calibration data. |
Use Scenario: Retaining user-configured alarm thresholds, measurement units, and audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: SPI-accessible persistent memory supporting infrequent but critical parameter updates. Use Value: 1.7 V operation ensures compatibility with battery-backed 1.8 V microcontrollers; >200-year retention avoids recalibration during device service life. |
| Smart Meter Firmware Patching | Automotive Body Control Module |
|
Use Scenario: Storing delta patches and version metadata for over-the-air (OTA) firmware updates in utility meters. IC Role / Device Role / Timing Role: Secure, low-power configuration store accessible during MCU bootloader execution. Use Value: Hardware write protection (BP bits + W pin) prevents corruption during brown-out conditions; 16 MHz interface accelerates patch validation. |
Use Scenario: Holding seat position presets, mirror angles, and lighting profiles in automotive interior modules. IC Role / Device Role / Timing Role: SPI EEPROM integrated into LIN/CAN gateway subsystems for user preference persistence. Use Value: −40 °C to +85 °C rating ensures reliability across vehicle cabin environments; ECOPACK2 WLSCP8 enables compact placement near MCU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial SPI EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DF512C-SSH-T | 512 Kbit SPI Flash (not EEPROM); lacks Identification page; 2.7–3.6 V only; no hardware W pin | Requires software-managed wear leveling; unsuitable for secure key storage or sub-2.7 V systems | Select only if cost-sensitive and flash endurance suffices; not drop-in for M95512-DFDW6TP's EEPROM behavior or low-VCC needs |
| M95512-WDW6TP | Same density/interface, but 2.5–5.5 V VCC range; no Identification page; identical pinout and command set | Cannot store locked calibration data; limited to higher-voltage host systems | Choose when design uses ≥2.5 V rails and does not require permanent parameter lockdown |
Compared with AT25DF512C-SSH-T and M95512-WDW6TP, M95512-DFDW6TP uniquely combines ultra-low 1.7 V operation, dedicated lockable Identification page, and hardware-enforced status register protection - making it the only option among the three for secure, battery-powered, long-life calibration storage.
Availability
M95512-DFDW6TP is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, smart meter OTA patching, and automotive body control module designs requiring stable component supply across extended temperature and low-voltage operating conditions.
Supply support for M95512-DFDW6TP 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and memory products for industrial, automotive, and consumer markets.
M95512-DFDW6TP belongs to ST's serial EEPROM product line, engineered specifically for secure, low-voltage, long-retention nonvolatile storage in resource-constrained embedded systems where reliability and data integrity are critical.
FAQ
What is the function of the HOLD pin on M95512-DFDW6TP?
The HOLD pin pauses ongoing SPI communication without deselecting the device or resetting internal state. When driven low while S is low and C is low, Q enters high-impedance, and D/C are ignored - allowing the host MCU to service higher-priority interrupts while preserving transaction context. It resumes automatically when HOLD returns high.
How does the Identification page differ from the main memory array?
The Identification page is a separate 128-byte region accessible only via RDID/WRID/LID instructions. Unlike main memory, it supports permanent read-only locking via the LID command - once locked, no further writes are possible even with WEL set. This makes it suitable for immutable data like cryptographic keys or factory calibration constants.
Can M95512-DFDW6TP operate reliably at 1.7 V across its full temperature range?
Yes - ST specifies guaranteed operation from 1.7 V to 5.5 V over −40 °C to +85 °C. At 1.7 V, AC timing parameters (e.g., tCLCH, tDH) are relaxed per DS4192 Rev 24 Section 9, but all functions including WRITE, RDSR, and HOLD remain fully operational with validated margins.
What happens if the W pin is left floating during operation?
Leaving W floating violates the absolute maximum ratings and risks undefined behavior: SRWD protection may fail, BP bits could become inadvertently modifiable, and the device may enter unstable states during power transitions. ST mandates W be actively driven high or low - typically pulled up via 10–100 kΩ resistor unless hardware lock is required.
M95512-DFDW6TP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 16 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
M95512-DFDW6TP FAQ
1.How can I place an order for M95512-DFDW6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M95512-DFDW6TP 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 M95512-DFDW6TP reliable?
The price and inventory of M95512-DFDW6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M95512-DFDW6TP is usually 5 days.
3.What payment methods are accepted for M95512-DFDW6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M95512-DFDW6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M95512-DFDW6TP?
M95512-DFDW6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M95512-DFDW6TP 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 M95512-DFDW6TP?
For technical support, including M95512-DFDW6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M95512-DFDW6TP requirements.
6.How does Aetrix verify that M95512-DFDW6TP is sourced from the original manufacturer or authorized distributors?
All M95512-DFDW6TP 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 M95512-DFDW6TP meets industry standards.
7.What is the process for return or replacement of M95512-DFDW6TP?
All M95512-DFDW6TP units undergo pre-shipment inspection (PSI). If there is an issue with M95512-DFDW6TP, 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 M95512-DFDW6TP part is unused and in its original packaging.
Return procedure for M95512-DFDW6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M95512-DFDW6TP 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
