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STMicroelectronics M95320-RMN6TP
- Part No.:
- M95320-RMN6TP
- Manufacturer:
- STMicroelectronics
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M95320-RMN6TP.pdf
- Description:
- IC EEPROM 32KBIT SPI 20MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,578
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Product details
Overview
M95320-RMN6TP from STMicroelectronics is a 32-Kbit serial SPI bus EEPROM organized as 4096 × 8 bits, operating from 1.8 V to 5.5 V supply and rated for -40°C to +85°C industrial temperature range. It supports 20 MHz clock speed, 32-byte page writes completing in ≤5 ms, and offers quarter/half/whole array write protection via status register bits BP1/BP0. It is used in embedded system configuration storage where nonvolatile parameter retention and SPI interface compatibility are required.
For engineers reviewing the M95320-RMN6TP datasheet, M95320-RMN6TP pinout, M95320-RMN6TP application, or M95320-RMN6TP equivalent, this page delivers verified electrical specs, validated SO8N package mapping, confirmed SPI mode support (CPOL=0/CPHA=0 and CPOL=1/CPHA=1), and real-world use cases in power management firmware and sensor calibration data logging.
Technical Context
The M95320-RMN6TP implements a standard SPI-4-wire interface with dedicated Serial Clock (C), Serial Data Input (D), Serial Data Output (Q), Chip Select (S), Write Protect (W), and HOLD pins. It uses a nonvolatile EEPROM memory array with internal address counter and page buffer architecture enabling 32-byte page writes.
Its Status Register includes WIP (Write In Progress), WEL (Write Enable Latch), BP1/BP0 (block protection), and SRWD (Status Register Write Disable) bits - all accessible via RDSR/WRSR instructions. Protection granularity is configurable to 1/4 (1 Kbyte), 1/2 (2 Kbytes), or full (4 Kbytes) memory array.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 32 Kbit (4 Kbytes), organized as 4096 × 8 bits - sufficient for firmware configuration tables or device-specific calibration data. |
| Interface | SPI bus (4-wire), CPOL=0/CPHA=0 and CPOL=1/CPHA=1 modes - compatible with most microcontroller SPI peripherals without protocol translation. |
| Max clock frequency | 20 MHz - enables fast read/write cycles; 5 ms max page write time at full speed reduces host MCU wait overhead. |
| Supply voltage | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V, 3.3 V, and 5 V logic domains without level shifters. |
| Data retention | 200 years - ensures long-term reliability of stored parameters across product lifecycle without refresh. |
| Endurance | 4 million write cycles - accommodates frequent field-updatable settings (e.g., energy meter tariff schedules). |
| Operating temperature | -40°C to +85°C - qualified for industrial and automotive under-hood applications requiring extended thermal stability. |
Pinout & Package
Package: SO8N (ECOPACK2®), 150 mil body width, 8-lead plastic small outline - RoHS-compliant, surface-mountable, and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S) | Chip Select | Active-low enable; places device in Active Power mode when low; Q goes high-Z when high. |
| 2 (W) | Write Protect | Hardware lock for BP1/BP0-configured protection zone; must be stable during write operations. |
| 3 (VSS) | Ground | Reference node for all I/O and supply; requires low-inductance connection to minimize noise coupling. |
| 4 (D) | Serial Data Input | Latches instruction/address/data on rising edge of C; MSB-first protocol aligns with standard SPI controllers. |
| 5 (Q) | Serial Data Output | Drives output data on falling edge of C; high-Z when S is high or HOLD is asserted. |
| 6 (C) | Serial Clock | Timing reference for all transfers; supports 20 MHz max frequency with defined setup/hold timing. |
| 7 (HOLD) | Hold Control | Pauses ongoing SPI transaction without deselecting device; allows host to service higher-priority interrupts. |
| 8 (VCC) | Supply Voltage | 1.8–5.5 V operation; requires local 10–100 nF decoupling capacitor near pin for stable read/write margins. |
Key Features
| Feature | Design Value |
|---|---|
| Page Write Performance | ≤5 ms per 32-byte page - minimizes host MCU blocking time during firmware updates or calibration writes. |
| Flexible Write Protection | Configurable via BP1/BP0 bits to lock 1/4, 1/2, or full memory array - prevents accidental overwrite of critical boot parameters. |
| HOLD Functionality | Halts SPI communication mid-transfer while maintaining chip select - enables deterministic interrupt handling in real-time systems. |
| Enhanced ESD Robustness | ≥4 kV HBM - improves board-level reliability in manufacturing and field deployment without external protection. |
| Identification Page (not implemented in -R variant) | Not available in M95320-RMN6TP - distinguishes it from M95320-D variants which include a dedicated 32-byte locked ID page. |
Applications
| Power Management Unit (PMU) Configuration | Industrial Sensor Node Calibration |
|---|---|
Use Scenario: Storing dynamic voltage/frequency scaling (DVFS) tables and fault log history in an AC-DC power module. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed via SPI during startup and runtime reconfiguration; timing-critical only during write cycles (≤5 ms). Use Value: Enables field-upgradable PMU behavior without BOM changes; 200-year retention eliminates recalibration intervals over product lifetime. |
Use Scenario: Holding factory-trimmed offset/gain coefficients and temperature compensation curves for a 4–20 mA pressure transducer. IC Role / Device Role / Timing Role: Static parameter repository read once at boot; write occurs only during calibration or firmware update. Use Value: Eliminates need for external trimming components; 4 million endurance supports >100 factory calibration cycles per unit. |
| Smart Meter Firmware Settings | Automotive Body Control Module (BCM) |
Use Scenario: Persisting tariff schedules, pulse constants, and tamper-event counters in electricity meters compliant with IEC 62056. IC Role / Device Role / Timing Role: Secure, write-protected storage accessed by metering SoC via isolated SPI; protected zones prevent unauthorized parameter modification. Use Value: Meets utility-grade security requirements via hardware-based BP1/BP0 locking; 1.8 V min supply supports battery-backed operation during mains failure. |
Use Scenario: Saving seat position memory, mirror angle presets, and lighting configuration in entry-level BCMs. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced directly to 3.3 V MCU; operates across full automotive temperature range (-40°C to +85°C). Use Value: Reduces system cost vs. flash-based alternatives; SO8N package enables compact PCB layout in space-constrained door modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25320B-MAHL-T (Microchip) | Same 32 Kbit SPI EEPROM, but 1.8–5.5 V supply and 20 MHz max clock; lacks HOLD pin and ECOPACK2® packaging. | No HOLD functionality limits use in real-time interrupt-driven systems; different package footprint requires PCB redesign. | Select if HOLD is unused and legacy AT25xx footprint compatibility is required. |
| MX25L3233FZUI-10G (Macronix) | 32 Mbit SPI NOR Flash (not EEPROM); requires sector erase before write; no byte-write capability. | Not suitable for frequent small-parameter updates due to erase latency (>100 ms) and 4-KB minimum erase granularity. | Avoid for configuration storage requiring high write endurance or byte-level updates; consider only for firmware image storage. |
Compared with AT25320B-MAHL-T, M95320-RMN6TP provides deterministic HOLD response and RoHS-compliant ECOPACK2® packaging; versus MX25L3233FZUI-10G, it delivers true EEPROM behavior - no erase cycles, 4M endurance, and sub-5-ms writes - making it superior for dynamic parameter storage.
Availability
M95320-RMN6TP is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter firmware settings, and automotive body control module configuration requiring stable component supply across extended temperature and voltage ranges.
Supply support for M95320-RMN6TP 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 designing and manufacturing microcontrollers, power management ICs, sensors, and memory products for industrial, automotive, and consumer applications.
M95320-RMN6TP belongs to ST's serial EEPROM product line, engineered for robust, low-power, SPI-compatible nonvolatile storage in resource-constrained embedded systems where reliability and long-term data integrity are critical.
FAQ
Is M95320-RMN6TP pin-compatible with M95320-WMN6TP?
Yes - both share identical SO8N (MN) package and pinout. The key difference is supply voltage range: M95320-RMN6TP operates from 1.8 V to 5.5 V, while M95320-WMN6TP requires 2.5 V to 5.5 V. Substituting -R for -W is safe in 1.8–2.4 V systems; substituting -W for -R may cause functional failure below 2.5 V.
Does M95320-RMN6TP support Quad SPI or Dual SPI modes?
No - it supports only standard 4-wire SPI (single I/O) with C, D, Q, and S signals. It does not implement dual-output (DIO) or quad-output (QIO) protocols. Its instruction set and timing diagrams confirm single-bit serial data transfer on D (input) and Q (output) lines only.
What is the function of the HOLD pin during an active write cycle?
HOLD has no effect during an internal write cycle (WIP = 1). The device ignores HOLD assertions until the write completes and WIP clears. HOLD is only active during SPI instruction/data transfer phases - it pauses clocked communication but does not abort or suspend ongoing EEPROM programming.
Can the Write Protect (W) pin override software-based protection settings?
Yes - when W is driven low, it forces full-array write protection regardless of BP1/BP0 status register values. This hardware lock takes precedence over software configuration and remains active until W returns high, providing a fail-safe mechanism against accidental writes during system debug or power transitions.
M95320-RMN6TP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 32Kbit
- Memory Organization:
- 4K 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-SOIC
M95320-RMN6TP FAQ
1.How can I place an order for M95320-RMN6TP through Aetrix?
Please submit a Request for Quotation (RFQ) for M95320-RMN6TP 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 M95320-RMN6TP reliable?
The price and inventory of M95320-RMN6TP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M95320-RMN6TP is usually 5 days.
3.What payment methods are accepted for M95320-RMN6TP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M95320-RMN6TP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M95320-RMN6TP?
M95320-RMN6TP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M95320-RMN6TP 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 M95320-RMN6TP?
For technical support, including M95320-RMN6TP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M95320-RMN6TP requirements.
6.How does Aetrix verify that M95320-RMN6TP is sourced from the original manufacturer or authorized distributors?
All M95320-RMN6TP 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 M95320-RMN6TP meets industry standards.
7.What is the process for return or replacement of M95320-RMN6TP?
All M95320-RMN6TP units undergo pre-shipment inspection (PSI). If there is an issue with M95320-RMN6TP, 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 M95320-RMN6TP part is unused and in its original packaging.
Return procedure for M95320-RMN6TP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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