Renesas AT25PE16-MHF-T

Overview

AT25PE16-MHF-T from Adesto Technologies is a 16-Mbit serial Flash memory with sequential access architecture, supporting SPI modes 0 and 3, RapidS™ high-speed interface up to 85 MHz, and dual 512/528-byte SRAM buffers for concurrent read-while-write operation. It delivers 6 ns clock-to-output time, ultra-low 300 nA deep power-down current, and industrial temperature range operation - deployed in embedded firmware storage, voice/data logging, and boot code retention systems.

For engineers reviewing the AT25PE16-MHF-T datasheet, AT25PE16-MHF-T pinout, AT25PE16-MHF-T application, or AT25PE16-MHF-T equivalent, key selection criteria include page size configurability (512 vs. 528 bytes), buffer-assisted streaming write capability, multi-level erase granularity (page/block/sector/chip), hardware write protection via WP pin, and SOIC/UDFN package compatibility in space-constrained industrial designs.

Technical Context

The AT25PE16-MHF-T implements a serial Flash architecture optimized for sequential data access rather than random addressing, eliminating parallel bus overhead and reducing pin count to eight. Its dual independent SRAM buffers enable true interleaved writes: while one buffer receives incoming data, the other transfers content to main memory - critical for continuous streaming applications like audio buffering or telemetry logging.

It supports four distinct Continuous Array Read opcodes (01h, 03h, 0Bh, 1Bh) with differentiated timing specs (fCAR1–fCAR4), enabling trade-offs between speed (up to 85 MHz), power (low-frequency 01h mode), and simplicity (no dummy bytes in 01h/03h). All program/erase cycles are fully self-timed, with status register monitoring of RDY/BUSY and EPE (Erase/Program Error) flags.

Key Specifications

Pinout & Package

AT25PE16-MHF-T is packaged in an 8-lead SOIC (0.208" wide), with pins arranged in standard dual-inline configuration. The metal pad on the bottom of alternative UDFN variants is unconnected and may be left floating or tied to GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT25PE16-MHF-T, AT25SF161-MHN-T offers higher base SPI speed but sacrifices buffer-assisted streaming and RapidS™ low-latency read modes, while W25Q16JVSNIQ delivers greater bandwidth via QSPI yet removes fine-grained erase control and sequential-access efficiency - making AT25PE16-MHF-T uniquely suited for deterministic streaming and firmware patching in resource-constrained industrial systems.

Availability

AT25PE16-MHF-T is available at Aetrix Electronics and suitable for industrial firmware storage, audio data logging, medical device boot memory, and smart meter firmware vault applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AT25PE16-MHF-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

Adesto Technologies (acquired by Dialog Semiconductor, now part of Renesas Electronics) specialized in low-power, high-reliability serial Flash and conductive polymer memory solutions for industrial and IoT applications.

The AT25PE16 product line was designed specifically for sequential-access, streaming-data applications requiring concurrent read-while-write, ultra-low power states, and robust industrial-grade endurance - distinguishing it from conventional random-access SPI Flash devices.

FAQ

What is the default page size configuration for the AT25PE16-MHF-T?

The AT25PE16-MHF-T ships with a default page size of 512 bytes. A customer-selectable 528-byte page option is available at order time and affects address mapping (21-bit vs. 22-bit), dummy byte count in read/write commands, and buffer addressing structure - both configurations maintain full command compatibility and performance specifications.

Does the AT25PE16-MHF-T support true read-while-write functionality?

Yes, the AT25PE16-MHF-T implements true read-while-write via two fully independent 512/528-byte SRAM buffers. While one buffer receives new data over SPI, the other can simultaneously transfer its contents to main memory using Buffer-to-Main-Memory Page Program commands (83h/86h), enabling uninterrupted streaming in data acquisition and audio buffering applications.

What is the purpose of the RESET pin on the AT25PE16-MHF-T?

The RESET pin on the AT25PE16-MHF-T provides asynchronous hardware reset: asserting it low terminates any ongoing program or erase operation and forces the internal state machine into idle mode. It is recommended to tie RESET high externally if unused, as the device includes an internal power-on reset circuit that ensures reliable initialization without external components.

How does the WP pin function on the AT25PE16-MHF-T?

The WP (Write Protect) pin on the AT25PE16-MHF-T is an active-low hardware lock that overrides all software-based protection mechanisms. When pulled low, it prevents all program and erase operations across all sectors - even if the Sector Protection Register is disabled - ensuring immutable firmware storage during power faults or software errors.

What package type is used for the AT25PE16-MHF-T?

The AT25PE16-MHF-T is supplied in an 8-lead SOIC package measuring 0.208" wide (5.3 mm), with standard pinout matching JEDEC MS-012. This package is lead (Pb)-free, halide-free, and RoHS compliant - suitable for automated SMT assembly and industrial thermal cycling requirements.