Microchip Technology AT25160A-10TU-1.8-T

Overview

AT25160A-10TU-1.8-T from Microchip Technology (formerly Atmel) is a 16-Kbit SPI serial EEPROM organized as 2048 × 8 bits, operating from 1.8 V to 5.5 V, supporting 20 MHz clock rate at 5 V, featuring 32-byte page write and hardware/software write protection. It serves as nonvolatile configuration storage in industrial controllers, power supply monitors, and embedded sensor nodes requiring low-voltage reliability.

For engineers reviewing the AT25160A-10TU-1.8-T datasheet, AT25160A-10TU-1.8-T pinout, AT25160A-10TU-1.8-T application, or AT25160A-10TU-1.8-T equivalent, key selection criteria include 1.8 V minimum supply, TSSOP-8 package compatibility, SPI Mode 0/3 support, block write protection granularity, and 1 million endurance cycles.

Technical Context

The AT25160A-10TU-1.8-T implements a synchronous SPI slave interface with dedicated SI/SO pins, CS-controlled selection, and HOLD pin for communication suspension without sequence reset. Its status register controls BP0/BP1 for 0%, 25%, 50%, or 100% array protection and WPEN for hardware write protect enable/disable.

It uses self-timed internal write cycles (≤5 ms), requires WREN before WRITE/WRSR, and supports continuous read with automatic address increment. The device powers up write-disabled and maintains data retention for 100 years across –40°C to +85°C industrial temperature range.

Key Specifications

Pinout & Package

AT25160A-10TU-1.8-T is housed in an 8-lead TSSOP (Thin Shrink Small Outline Package) with 4.4 mm body width, RoHS-compliant lead-free finish, and 0.65 mm pitch - optimized for automated PCB assembly and thermal performance in dense layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with M95160-DRMN6TP/K and BR24G16FJ-3GE2, the AT25160A-10TU-1.8-T offers broader SPI mode support and HOLD functionality for deterministic bus arbitration, while maintaining industry-standard endurance and retention - making it optimal for mixed-voltage industrial systems requiring robust communication control.

Availability

AT25160A-10TU-1.8-T is available at Aetrix Electronics and suitable for industrial PLCs, smart power supplies, medical sensor nodes, and automotive body control modules requiring stable component supply, long-term obsolescence management, and RoHS-compliant packaging.

Supply support for AT25160A-10TU-1.8-T 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 devices, and nonvolatile memory solutions, with a focus on embedded control and connectivity.

The AT25160A-10TU-1.8-T belongs to Microchip's AT25xxx family of SPI serial EEPROMs, designed specifically for low-power, multi-voltage industrial and automotive applications demanding high reliability and flexible interface compatibility.

FAQ

What is the memory organization of the AT25160A-10TU-1.8-T?

The AT25160A-10TU-1.8-T contains 16,384 bits of EEPROM memory organized as 2048 words × 8 bits. This structure supports byte-level random reads and writes, with 32-byte page write capability to accelerate bulk data programming. The memory map is linear and directly addressable via 11-bit addresses (A10–A0), as confirmed in Table 3-6 of the datasheet.

Does the AT25160A-10TU-1.8-T support both SPI Mode 0 and Mode 3?

Yes, the AT25160A-10TU-1.8-T explicitly supports SPI Modes 0 (CPOL = 0, CPHA = 0) and 3 (CPOL = 1, CPHA = 1), as stated in the Features section. Mode 0 operation is fully documented in the datasheet timing diagrams and AC characteristics; Mode 3 compatibility is verified by the device's bidirectional clock polarity and phase handling per its slave interface architecture.

What is the function of the HOLD pin on the AT25160A-10TU-1.8-T?

The HOLD pin on the AT25160A-10TU-1.8-T suspends ongoing SPI communication without resetting the internal address counter or command state. When asserted low while SCK is low, it places SO in high-impedance and ignores SI inputs; resuming requires bringing HOLD high while SCK remains low. This enables priority interrupt handling in multi-master or resource-constrained systems.

How does write protection work on the AT25160A-10TU-1.8-T?

Write protection on the AT25160A-10TU-1.8-T operates through two independent mechanisms: hardware protection via the WP pin (when WPEN = 1 and WP = low) and software-configurable block protection via BP0/BP1 bits in the status register. These bits define four protection levels (0%, 25%, 50%, 100% of memory), and all protections are nonvolatile and retain settings across power cycles.

What is the maximum write cycle time for the AT25160A-10TU-1.8-T?

The maximum write cycle time for the AT25160A-10TU-1.8-T is 5 ms, as specified in Table 1-3 under tWC (Write Cycle Time) across all supported voltage ranges (1.8–5.5 V). This self-timed value applies to both byte and page writes; the device automatically exits write mode upon completion and returns to standby, requiring no external delay or polling beyond RDSR status checking.