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STMicroelectronics M95512-DRMB6TG
- Part No.:
- M95512-DRMB6TG
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
M95512-DRMB6TG.pdf
- Description:
- IC EEPROM 512KBIT SPI 8UFDFPN
- Quantity:
- Payment:
- Shipping:
Inventory:1,263
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Product details
Overview
M95512-DRMB6TG from STMicroelectronics is a 512-Kbit (64-Kbyte) serial SPI EEPROM organized as 65536 × 8 bits, featuring 128-byte page architecture, 1.7 V to 5.5 V single-supply operation, and an Identification page for secure parameter storage. It supports 16 MHz clock speed, offers >4 million write cycles and >200-year data retention, and is deployed in industrial control modules requiring nonvolatile configuration storage with hardware-level write protection.
For engineers reviewing the M95512-DRMB6TG datasheet, M95512-DRMB6TG pinout, M95512-DRMB6TG application, or M95512-DRMB6TG equivalent, this device is selected for embedded systems demanding robust SPI EEPROM with configurable quarter/half/whole-array write lock, hold functionality for bus arbitration, and ECOPACK2-compliant compact packaging including WLCSP8 and UFDFPN8.
Technical Context
The M95512-DRMB6TG implements a standard SPI interface with CPOL/CPHA = (0,0) or (1,1), latching input data on the rising edge of C and outputting data on the falling edge. Its internal HV generator enables byte/page writes within 5 ms without external high-voltage programming circuitry.
It integrates a nonvolatile Status register with BP1/BP0 bits for software-configurable memory protection and SRWD + W pin for hardware-enforced lock of protection settings. The dedicated 128-byte Identification page supports permanent read-only locking after initial provisioning - a feature absent in M95512-W/R variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 512 Kbit (64 Kbyte), organized as 65536 × 8 bits - directly addressable via two-byte addressing with MSB-first protocol |
| Page size | 128 bytes - defines minimum write granularity and buffer requirement for efficient firmware updates |
| Write time | ≤5 ms per byte or per page - enables deterministic timing for real-time configuration saves without polling overhead |
| Supply voltage | 1.7 V to 5.5 V - supports direct interfacing with 1.8 V microcontrollers and legacy 3.3 V/5 V systems |
| Data retention | >200 years at 25 °C - ensures long-term reliability in unattended industrial deployments |
| Endurance | >4 million write cycles - exceeds typical field lifetime requirements for calibration and event-logging use cases |
| Operating temp | −40 °C to +85 °C - qualified for extended temperature range in automotive body control and factory automation |
Pinout & Package
Available in ECOPACK2-compliant packages: SO8N (150 mil), TSSOP8 (169 mil), UFDFPN8 (2 × 3 mm), and WLCSP8 (1.289 × 1.955 mm). Pin functions are identical across all variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| S | Chip select | Active-low enable signal; falling edge required after power-up before first instruction; deselect resets internal state except WEL/WIP |
| C | Serial clock | Input timing reference; data latched on rising edge (D), output shifted on falling edge (Q); supports 16 MHz max frequency |
| D | Serial data input | MSB-first input for instructions, addresses, and write data; sampled on first rising edge of C after S goes low |
| Q | Serial data output | MSB-first output for read data and status register; high-impedance when S is high or HOLD is active |
| W | Write protect | Hardware control for SRWD bit: drives Status register into read-only mode when SRWD = 1 and W = low |
| HOLD | Hold control | Pauses ongoing SPI transaction without deselecting device; Q goes high-Z, D/C become don't-care; requires S = low to activate |
| VCC | Power supply | Single supply rail (1.7–5.5 V); internal POR ensures no spurious writes during power ramp; decoupling cap (10–100 nF) required near pins |
| VSS | Ground | Reference for all I/O and internal logic; must be connected before VCC and maintained stable during operation |
Key Features
| Feature | Design Value |
|---|---|
| Identification page (128 bytes) | Dedicated nonvolatile area for storing calibration constants or security keys; can be permanently locked in read-only mode via LID instruction |
| Configurable write protection | BP1/BP0 bits enable software-selectable lock of upper quarter (C000h–FFFFh), upper half (8000h–FFFFh), or full array (0000h–FFFFh) |
| Hardware+software protection synergy | SRWD bit + W pin combine to freeze BP1/BP0/SRWD values - prevents accidental or malicious reconfiguration of protection settings |
| HOLD functionality | Enables multi-master SPI arbitration by pausing transactions without resetting internal address pointer or command state |
| ECOPACK2 packaging | All package options meet RoHS, halogen-free, and lead-free requirements; WLCSP8 enables ultra-compact PCB layouts in space-constrained IoT sensors |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Storing calibrated sensor offsets, actuator limits, and user-defined operational modes in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration EEPROM interfaced via SPI to ARM Cortex-M7 host MCU; accessed during boot and runtime parameter updates. Use Value: 128-byte page writes complete in ≤5 ms, enabling fast field firmware updates without system interruption; >200-year retention ensures data integrity over equipment lifetime. |
Use Scenario: Retaining door lock settings, mirror position memory, and lighting profiles across vehicle ignition cycles. IC Role / Device Role / Timing Role: SPI EEPROM co-located with BCM microcontroller; powered from 3.3 V rail; operates across −40 °C to +85 °C ambient. Use Value: Hardware write protection (W + SRWD) prevents corruption during battery transients; Identification page stores VIN-linked security tokens. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Parameters |
|
Use Scenario: Storing flow-rate calibration coefficients, dose history logs, and safety-critical alarm thresholds in Class II medical devices. IC Role / Device Role / Timing Role: Safety-redundant nonvolatile memory; accessed only during maintenance mode via isolated SPI interface. Use Value: >4 million write cycles support daily recalibration over 10+ years; ECOPACK2 WLCSP8 minimizes board footprint in sealed enclosure. |
Use Scenario: Holding tariff tables, metering constants, and communication credentials in ANSI C12.19-compliant smart meters. IC Role / Device Role / Timing Role: SPI EEPROM integrated into metrology SoC subsystem; retains data during brownout events and firmware upgrades. Use Value: Quarter-array protection isolates tariff tables from firmware update routines; 1.7 V operation ensures function down to end-of-battery life. |
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 built-in Identification page; no hardware W pin; requires sector erase before write | Used where code storage dominates over frequent small-data writes; unsuitable for calibration logging with >10⁴ annual writes | Select only if application requires execute-in-place (XIP) or larger block erase tolerance; not drop-in for M95512-DRMB6TG's byte-write workflow |
| M95512-DRE6TG | Same die, identical electrical specs, but in TSSOP8 (169 mil) instead of WLCSP8; no difference in pinout or functionality | Preferred for manual assembly or prototyping where WLCSP rework is impractical; same ECOPACK2 compliance | Choose based on PCB assembly capability: WLCSP8 for miniaturized production, TSSOP8 for lab validation and low-volume builds |
Compared with AT25DF512C-SSH-T, M95512-DRMB6TG delivers true byte-addressable endurance and deterministic 5 ms writes without erase latency; versus M95512-DRE6TG, it trades package form factor for board-area savings - both share identical functional behavior and qualification.
Availability
M95512-DRMB6TG is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply with guaranteed long-term availability.
Supply support for M95512-DRMB6TG 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, specializing in microcontrollers, power management, sensors, and nonvolatile memory solutions for industrial, automotive, and consumer markets.
The M95512 series belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, high-endurance data logging and configuration storage in harsh environments with wide voltage and temperature ranges.
FAQ
What is the purpose of the Identification page in M95512-DRMB6TG?
The Identification page is a dedicated 128-byte memory region used to store sensitive application-specific data such as calibration coefficients, security keys, or device-unique identifiers. Unlike the main array, it supports a permanent lock command (LID) that disables further writes - making it ideal for tamper-resistant provisioning in certified medical or industrial devices.
How does the HOLD pin function during an active SPI transaction?
The HOLD pin pauses communication without resetting the internal address counter or command state. When asserted low while S is low, Q enters high-impedance, and D/C are ignored. The transaction resumes from the exact bit position once HOLD returns high - enabling seamless bus arbitration in multi-master systems without data loss or reinitialization.
Can M95512-DRMB6TG operate reliably at 1.7 V supply?
Yes - M95512-DRMB6TG is rated for 1.7 V to 5.5 V operation, with full functionality including 16 MHz clock support, 5 ms write times, and −40 °C to +85 °C temperature range. This allows direct interfacing with 1.8 V microcontrollers even under brownout conditions, eliminating level-shifting components in battery-powered designs.
What happens if the Write Protect (W) pin is left floating?
The W pin must be actively driven high or low; floating violates the datasheet's DC input specification and may cause undefined behavior in Status register protection logic. In practice, an undriven W pin risks intermittent activation of Hardware Protected mode, blocking WRSR execution and preventing future BP1/BP0 updates - always tie W to VCC or GND via appropriate pull-up/down resistor.
M95512-DRMB6TG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 20 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UFDFPN (2x3)
M95512-DRMB6TG FAQ
1.How can I place an order for M95512-DRMB6TG through Aetrix?
Please submit a Request for Quotation (RFQ) for M95512-DRMB6TG 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-DRMB6TG reliable?
The price and inventory of M95512-DRMB6TG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M95512-DRMB6TG is usually 5 days.
3.What payment methods are accepted for M95512-DRMB6TG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M95512-DRMB6TG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M95512-DRMB6TG?
M95512-DRMB6TG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M95512-DRMB6TG 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-DRMB6TG?
For technical support, including M95512-DRMB6TG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M95512-DRMB6TG requirements.
6.How does Aetrix verify that M95512-DRMB6TG is sourced from the original manufacturer or authorized distributors?
All M95512-DRMB6TG 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-DRMB6TG meets industry standards.
7.What is the process for return or replacement of M95512-DRMB6TG?
All M95512-DRMB6TG units undergo pre-shipment inspection (PSI). If there is an issue with M95512-DRMB6TG, 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-DRMB6TG part is unused and in its original packaging.
Return procedure for M95512-DRMB6TG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
M95512-DRMB6TG Tags
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