STMicroelectronics M95010-RDW6TP

Overview

M95010-RDW6TP from STMicroelectronics is a 1-Kbit (128-byte) serial SPI bus EEPROM with 1.8 V to 5.5 V single-supply operation, 20 MHz max clock frequency, and 16-byte page write capability. It features hardware write protection (quarter/half/whole array), enhanced ESD protection, and operates across –40 °C to +85 °C for industrial control and sensor calibration storage.

For engineers reviewing the M95010-RDW6TP datasheet, M95010-RDW6TP pinout, M95010-RDW6TP application, or M95010-RDW6TP equivalent, key selection criteria include supply voltage range compatibility, SPI mode support (CPOL=0/1, CPHA=0/1), ECC-enabled read reliability, and identification-page lockability in higher-density variants.

Technical Context

This EEPROM implements a standard SPI interface with four active signals (C, D, Q, S), plus HOLD and W for communication pause and hardware write disable. Its internal architecture includes an ECC x1 logic block per byte, transparently correcting single-bit errors during read operations.

The device uses a non-volatile status register with BP1/BP0 bits to configure software-based memory protection zones, and requires WREN/WRSR sequences to modify protection settings. Power-on reset ensures safe initialization before instruction acceptance.

Key Specifications

Pinout & Package

Supplied in RoHS-compliant, halogen-free TSSOP8 (169 mil width) package per ECOPACK2 standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT25010B-SSHL-T, M95010-RDW6TP adds ECC and HOLD-critical for noise-prone industrial interfaces-while M95010-WDW6TP trades voltage flexibility for legacy 2.5 V+ designs, making the -R variant optimal for modern mixed-voltage embedded systems.

Availability

M95010-RDW6TP is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and smart energy metering requiring stable component supply and long-term obsolescence management.

Supply support for M95010-RDW6TP 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, delivering intelligent power, sensing, and connectivity solutions for industrial, automotive, and consumer markets.

The M950x0 series targets cost-sensitive, high-reliability embedded systems needing robust SPI EEPROM with extended voltage range and built-in data integrity features-notably ECC and flexible write protection.

FAQ

What SPI modes does M95010-RDW6TP support?

M95010-RDW6TP supports two SPI modes: CPOL = 0, CPHA = 0 and CPOL = 1, CPHA = 1. In both, data is latched on the rising edge of C (clock) and output shifts on the falling edge. The difference lies only in idle clock polarity-ensuring compatibility with most MCU SPI peripherals without mode reconfiguration.

How does the HOLD function interact with chip select (S)?

HOLD can only be asserted when S is low (device selected). During HOLD, Q goes high-impedance and D/C are ignored; the internal state remains preserved. If S is driven high while HOLD is active, the device resets its internal state-this is a valid recovery mechanism but breaks the paused transaction.

Is the identification page available on M95010-RDW6TP?

No-the identification page (RDID/WRID/LID instructions) is exclusive to the M95040-DF variant. M95010-RDW6TP has only the main 128-byte memory array and standard status register; it does not implement the additional 16-byte identification page or its lock functionality.

What happens if W (write protect) is left floating?

Leaving W floating violates the absolute maximum ratings and may cause unpredictable behavior-including intermittent write blocking or unintended writes. W must be actively driven high (to enable writes) or low (to disable all writes); a pull-up resistor to VCC is recommended unless hardware protection is always required.