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STMicroelectronics M95020-RMB6TG

Name: M95020-RMB6TG
Brand: STMicroelectronics
SKU: M95020-RMB6TG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M95020-RMB6TG

Manufacturer:: STMicroelectronics

Category:: Memory

Package:: 8-UFDFN Exposed Pad

Datasheet:: M95020-RMB6TG.pdf

Description:: IC EEPROM 2KBIT SPI 8UFDFPN

Quantity:: RFQ Add To RFQ list

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Inventory:997

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Product details

Overview

M95020-RMB6TG from STMicroelectronics is a 2-Kbit (256-byte) serial SPI bus EEPROM with 1.8 V to 5.5 V single-supply operation, 20 MHz max clock frequency, and industrial temperature range (−40 °C to +85 °C). It features page-write capability (16-byte pages), >4 million write cycles, and 200-year data retention - deployed in embedded systems for firmware parameter storage, calibration data logging, and configuration backup.

For engineers reviewing the M95020-RMB6TG datasheet, M95020-RMB6TG pinout, M95020-RMB6TG application, or M95020-RMB6TG equivalent, key selection criteria include supply voltage compatibility (1.8–5.5 V), SPI mode support (CPOL/CPHA = 0/0 or 1/1), hardware/software write protection granularity, ECC-enabled read reliability, and TSSOP8 package suitability for space-constrained PCB layouts.

Technical Context

This device implements a standard SPI interface with dedicated HOLD and WRITE PROTECT inputs for real-time communication suspension and memory region locking. Its internal architecture includes an ECC x1 logic block per byte, transparently correcting single-bit errors during read operations without software intervention.

The status register contains non-volatile BP1/BP0 bits controlling quarter/half/whole-array write protection, plus volatile WEL and WIP bits for dynamic write enable state and in-progress cycle monitoring - all accessible via RDSR/WRSR instructions with strict timing requirements on chip select edge alignment.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory size	2 Kbit (256 × 8-bit array) - supports compact configuration storage without over-provisioning.
Supply voltage	1.8 V to 5.5 V - enables direct interfacing with 1.8 V, 3.3 V, and 5 V microcontrollers without level-shifting.
Max SPI clock	20 MHz - allows high-throughput parameter updates (e.g., <5 ms page writes) in time-critical boot sequences.
Write endurance	>4 million cycles - ensures reliable field recalibration across product lifetime in industrial sensor nodes.
Data retention	>200 years at +25 °C - guarantees long-term integrity of factory-trimmed coefficients and security keys.
Operating temp	−40 °C to +85 °C - qualified for under-hood automotive modules and outdoor industrial gateways.
ECC support	Single-bit error correction per byte - eliminates need for external CRC checks in safety-critical configuration reads.

Pinout & Package

Supplied in RoHS-compliant, halogen-free TSSOP8 (169 mil width) package - optimized for automated SMT assembly and thermal performance in dense control boards.

Pin/Terminal	Circuit Role	Design Meaning
S	Chip select	Active-low enable signal; falling edge required before first instruction; deselects device and places Q in high-impedance state.
C	Serial clock	Input timing reference; latches D on rising edge, drives Q on falling edge; supports CPOL=0/CPHA=0 and CPOL=1/CPHA=1 modes.
D	Serial data input	MSB-first input for instructions, addresses, and write data; sampled on rising edge of C.
Q	Serial data output	MSB-first output for memory/status/ID data; driven only when S is low; high-impedance when S is high or HOLD is active.
W	Write protect	Hardware-level lock: held low to disable all write operations regardless of WEL or BP bits - used for fail-safe configuration lockdown.
HOLD	Communication hold	Pauses ongoing SPI transfer without resetting internal state; requires S low and C low for valid assertion/deassertion.
V_CC	Supply voltage	1.8–5.5 V power rail; must be stable before any instruction; decoupling capacitor (10–100 nF) required near pins.
V_SS	Ground	Reference for all I/O and internal circuitry; must be connected directly to system ground plane.

Key Features

Feature	Design Value
Page-write architecture	16-byte pages enable efficient bulk updates (e.g., full calibration table) within ≤5 ms, reducing MCU wait time vs. byte-write.
Software block protection	BP1/BP0 bits in status register allow runtime-selectable write lock of upper quarter, half, or entire array - ideal for preserving bootloader settings.
Hold function	Enables deterministic pause/resume of SPI transfers during interrupt servicing - avoids reinitialization overhead in RTOS environments.
Power-on reset (POR)	Guarantees WEL=0 and WIP=0 at startup, preventing spurious writes during voltage ramp-up - critical for unattended field deployments.
Enhanced ESD protection	Withstands >4 kV HBM - improves robustness in handling-sensitive manufacturing and repair workflows.

Applications

Industrial PLC Configuration Storage

Automotive Body Control Module (BCM)

Use Scenario: Storing user-defined I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers.

IC Role / Device Role / Timing Role: Non-volatile configuration register accessed during boot and runtime via SPI; ECC ensures integrity of safety-critical setpoints.

Use Value: Eliminates need for external checksum validation and extends field recalibration interval beyond 10 years due to >200-year retention.

Use Scenario: Retaining door lock programming, mirror position presets, and lighting profiles across vehicle ignition cycles.

IC Role / Device Role / Timing Role: SPI-connected parameter vault; powered from 3.3 V domain; withstands −40 °C cold cranking and +85 °C under-dash thermal stress.

Use Value: Hardware W pin provides fail-safe lock against accidental overwrites during CAN firmware updates, meeting ISO 16750-4 requirements.

Medical Infusion Pump Calibration

Smart Energy Meter Firmware Backup

Use Scenario: Holding flow-rate calibration coefficients, motor step compensation tables, and regulatory audit logs.

IC Role / Device Role / Timing Role: Secure, tamper-resistant storage accessed only by trusted MCU firmware; BP bits prevent unauthorized modification of dose algorithms.

Use Value: ECC x1 corrects bit flips induced by ambient radiation in hospital environments - certified to IEC 62304 Class B SW safety requirements.

Use Scenario: Backing up metering firmware patches, tariff schedules, and cryptographic keys during power loss events.

IC Role / Device Role / Timing Role: Low-voltage (1.8 V) compatible EEPROM enabling direct connection to energy harvesting PMUs; fast 5 ms page writes minimize brownout window.

Use Value: >4 million write cycles support daily firmware delta updates over 10+ year meter lifetime without wear-out risk.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial SPI EEPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AT25DF021A-SSH-T	2 Mbit density, 85 MHz max clock, no built-in ECC, requires external V_P for sector erase	Targeted at firmware code storage, not parameter EEPROM use; lacks hardware W pin and BP granularity	Select only if higher density and faster clock are mandatory and ECC can be implemented in firmware.
BR24G02FJ-3GE2	I²C interface (not SPI), 1.7–5.5 V, 1 MHz max clock, no HOLD pin, no identification page	Used where board space permits larger pitch packages and MCU has limited SPI peripherals but available I²C lines	Choose only when SPI bus is fully allocated and I²C timing budget allows slower 1 ms writes.

Compared with AT25DF021A-SSH-T and BR24G02FJ-3GE2, M95020-RMB6TG delivers optimal balance of SPI compatibility, hardware-assisted write protection, ECC reliability, and industrial-grade voltage/temperature margin - making it the preferred choice for parameter-critical embedded control applications.

Availability

M95020-RMB6TG 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 across multi-year production cycles.

Supply support for M95020-RMB6TG 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 solutions for industrial, automotive, and consumer markets.

The M950x0 series targets cost-sensitive, space-constrained embedded systems needing robust, low-power serial EEPROM with enhanced reliability features - specifically engineered for configuration, calibration, and security-critical data storage.

FAQ

Does M95020-RMB6TG support both SPI Mode 0 and Mode 3?

Yes - it operates in CPOL=0/CPHA=0 (Mode 0) and CPOL=1/CPHA=1 (Mode 3), with input data latched on the rising edge of C and output data valid on the falling edge. The device ignores invalid clock polarity/phase combinations and enters wait state until deselected.

What happens if the HOLD pin is asserted mid-transfer?

When HOLD is driven low while S is low and C is low, the device immediately places Q in high-impedance state and ignores further D and C transitions. Communication resumes from the exact bit position upon HOLD deassertion - no re-synchronization or restart is needed.

Can the identification page be used on M95020-RMB6TG?

No - the identification page (RDID/WRID/LID instructions) is exclusive to M95040-DF order codes. M95020-RMB6TG implements only the standard 256-byte memory array and status register; its instruction set excludes identification-page-specific opcodes.

How is write protection enforced when both W pin and BP bits are active?

Hardware write protection via the W pin takes precedence: if W is low, all write operations (WRITE, WRSR, etc.) are blocked regardless of BP1/BP0 state or WEL status. BP bits only apply when W is high and WEL is set - enabling selective software-based locking of memory regions.

M95020-RMB6TG 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:: 2Kbit

Memory Organization:: 256 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)

M95020-RMB6TG FAQ

1.How can I place an order for M95020-RMB6TG through Aetrix?

Please submit a Request for Quotation (RFQ) for M95020-RMB6TG 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 M95020-RMB6TG reliable?

The price and inventory of M95020-RMB6TG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M95020-RMB6TG is usually 5 days.

3.What payment methods are accepted for M95020-RMB6TG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M95020-RMB6TG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M95020-RMB6TG?

M95020-RMB6TG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M95020-RMB6TG 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 M95020-RMB6TG?

For technical support, including M95020-RMB6TG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M95020-RMB6TG requirements.

6.How does Aetrix verify that M95020-RMB6TG is sourced from the original manufacturer or authorized distributors?

All M95020-RMB6TG 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 M95020-RMB6TG meets industry standards.

7.What is the process for return or replacement of M95020-RMB6TG?

All M95020-RMB6TG units undergo pre-shipment inspection (PSI). If there is an issue with M95020-RMB6TG, 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 M95020-RMB6TG part is unused and in its original packaging.

Return procedure for M95020-RMB6TG:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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