Microchip Technology AT25010A-10TI-1.8

Overview

AT25010A-10TI-1.8 from Microchip Technology (formerly Atmel) is a 1-Kbit SPI serial EEPROM organized as 128 words × 8 bits, operating from 1.8 V to 5.5 V, supporting 20 MHz clock rate at 5 V, featuring 8-byte page write mode and hardware/software write protection via WP pin and status register. It serves as nonvolatile configuration storage in low-power industrial sensor nodes and embedded microcontroller peripherals.

For engineers reviewing the AT25010A-10TI-1.8 datasheet, AT25010A-10TI-1.8 pinout, AT25010A-10TI-1.8 application, or AT25010A-10TI-1.8 equivalent, key selection considerations include its 1.8 V minimum supply, TSSOP-8 package footprint, SPI Mode 0/3 compatibility, block write protection granularity, and automotive-grade temperature range (−40°C to +85°C).

Technical Context

The AT25010A-10TI-1.8 implements a synchronous SPI slave interface with dedicated SI/SO pins, MSB-first data framing, and chip-select–driven command protocol. Its internal architecture includes an 8-bit instruction register, status register with BP1/BP0 for 1/4–full array protection, and automatic address increment during sequential reads.

Write operations require explicit WREN instruction followed by WRITE op-code; self-timed internal write cycles complete in ≤5 ms with no external erase step. HOLD pin enables communication suspension without sequence reset, while WP pin provides hardware-level write inhibition independent of software state.

Key Specifications

Pinout & Package

AT25010A-10TI-1.8 is supplied in an 8-lead Thin Shrink Small Outline Package (TSSOP), 0.170" wide body, with 0.65 mm lead pitch and JEDEC MO-153 compliant footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with M95128-WMN6TP and BR24G01FJ-WE2, the AT25010A-10TI-1.8 delivers optimal balance of SPI compatibility, 20 MHz throughput at 5 V, and proven industrial reliability in compact TSSOP-8 - making it ideal for cost-sensitive, performance-aware embedded systems where interface consistency and timing predictability are critical.

Availability

AT25010A-10TI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded firmware configuration, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AT25010A-10TI-1.8 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

Microchip Technology is a global semiconductor company specializing in microcontrollers, analog components, and nonvolatile memory solutions, with a focus on reliability, longevity, and embedded system integration.

The AT25010A-10TI-1.8 belongs to Microchip's legacy Atmel SPI EEPROM product line, designed specifically for robust, low-power, pin-efficient nonvolatile storage in resource-constrained industrial and automotive applications.

FAQ

What is the minimum supply voltage required for reliable operation of the AT25010A-10TI-1.8?

The AT25010A-10TI-1.8 operates reliably from 1.8 V to 5.5 V. At 1.8 V, DC characteristics including standby current (0.1 µA) and logic thresholds are fully specified per Table 3. Operation below 1.8 V is not guaranteed and may result in undefined behavior or data corruption during write cycles. The "−1.8" suffix in the part number explicitly denotes this low-voltage capability.

Does the AT25010A-10TI-1.8 support SPI Mode 3, and how is it configured?

Yes, the AT25010A-10TI-1.8 supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1). No hardware or register configuration is required - the device automatically adapts to the master's clock polarity and phase. Mode 0 is documented in detail, but Mode 3 operation is explicitly verified in the Features section and functional timing diagrams.

How does the HOLD pin function during an active SPI transaction on the AT25010A-10TI-1.8?

The HOLD pin suspends serial communication without resetting the internal address counter or command state. To activate HOLD, the pin must be driven low while SCK is low; SO enters high-impedance and SI inputs are ignored. Resuming requires bringing HOLD high while SCK remains low. This enables priority interrupt handling in the host MCU without losing EEPROM transaction context.

Can the AT25010A-10TI-1.8 be used in automotive applications, and what qualifications does it meet?

Yes, the AT25010A-10TI-1.8 is rated for automotive-grade extended temperature operation (−40°C to +85°C) and offered in lead-free/halogen-free variants. While not AEC-Q100 certified as a standalone component, its specification compliance, 100-year data retention, and 1-million-cycle endurance align with functional safety requirements for non-safety-critical body electronics such as mirror controls and lighting modules.

What happens if the WP pin is pulled low during a write cycle on the AT25010A-10TI-1.8?

If WP is pulled low while CS is still low but before the internal write cycle begins, the write operation is aborted and the device returns to standby. If WP goes low after the internal write has started, it has no effect - the cycle completes normally. This behavior is explicitly defined in the WRITE PROTECT section and ensures predictable failure modes during transient noise events.