Renesas AT25PE16-MHF-Y

Overview

AT25PE16-MHF-Y from Adesto Technologies is a 16-Mbit serial Flash memory with SPI interface, 512/528-byte page architecture, dual 512/528-byte SRAM buffers, and RapidS™ high-speed read capability up to 85 MHz. It operates from a single 2.3V–3.6V supply and supports industrial temperature range (−40°C to +85°C), making it suitable for embedded firmware storage in space-constrained industrial controllers.

For engineers reviewing the AT25PE16-MHF-Y datasheet, AT25PE16-MHF-Y pinout, AT25PE16-MHF-Y application, or AT25PE16-MHF-Y equivalent, key selection criteria include its dual-buffer interleaved write capability, ultra-low 300nA deep power-down current, flexible erase granularity (page/4KB/128KB/chip), and hardware write-protect pin - all critical for reliable firmware update and data logging in battery-powered edge devices.

Technical Context

The AT25PE16-MHF-Y implements a sequential-access DataFlash-L® architecture with two independent SRAM buffers enabling concurrent receive-and-program operation. Its SPI interface supports modes 0 and 3, with four distinct continuous read opcodes (01h, 03h, 0Bh, 1Bh) optimized for low-power, standard, high-frequency, and ultra-high-frequency operation respectively.

Memory organization comprises 4,096 pages of 512 bytes (default) or 528 bytes (customer-selectable), totaling 17,301,504 bits. Erase operations are fully self-timed and support page (512/528 B), block (4 KB), sector (128 KB), and chip (16 Mbit) levels, while program operations include byte/page direct write, buffer write, and buffer-to-main-memory page program with or without built-in erase.

Key Specifications

Pinout & Package

AT25PE16-MHF-Y is packaged in an 8-pad Ultra-thin DFN (5 × 6 × 0.6 mm) with exposed thermal pad (non-connected). Pin functions align with standard SPI serial flash interface and include hardware reset and write-protect control.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q16JW and MX25L1633F, the AT25PE16-MHF-Y uniquely delivers dual-SRAM-buffered concurrent operation, 2.3 V minimum supply, and 300 nA deep power-down - making it the only option among the three for battery-backed firmware streaming in industrial edge nodes.

Availability

AT25PE16-MHF-Y is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, smart energy meter data logging, automotive telematics OTA staging, and secure IoT node configuration requiring stable component supply across extended product lifecycles.

Supply support for AT25PE16-MHF-Y 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 non-volatile memory and analog ICs for industrial and IoT applications.

The AT25PE16-MHF-Y belongs to Adesto's DataFlash-L® family, designed specifically for sequential-access firmware and data storage in resource-constrained embedded systems requiring ultra-low power, rapid read, and robust in-system reprogrammability.

FAQ

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

The AT25PE16-MHF-Y ships with a default page size of 512 bytes. A customer-selectable 528-byte page option is available at order time and affects addressing (21-bit vs. 22-bit), dummy byte count in read/write commands, and buffer usage for ECC or metadata storage. The AT25PE16-MHF-Y does not support runtime switching between page sizes - the configuration is fixed at manufacturing.

Does the AT25PE16-MHF-Y support Quad SPI or only standard SPI?

The AT25PE16-MHF-Y supports only standard 3-wire SPI (CS, SCK, SI, SO) in modes 0 and 3. It does not implement Quad SPI (QSPI) or Dual SPI interfaces. Its high-speed performance is achieved through RapidS™ protocol optimization of the standard SPI waveform, not additional I/O lines. The AT25PE16-MHF-Y pinout and command set are incompatible with Quad SPI devices.

How does the dual-buffer architecture of the AT25PE16-MHF-Y improve write throughput?

The AT25PE16-MHF-Y's two independent 512/528-byte SRAM buffers allow the host to stream data into one buffer while the other buffer's contents are being programmed into main memory - eliminating wait states during page reprogramming. This interleaving enables sustained write rates approaching the maximum SPI clock frequency. The AT25PE16-MHF-Y achieves this without requiring host-side buffering or complex timing coordination.

What is the purpose of the 128-byte security register in the AT25PE16-MHF-Y?

The 128-byte security register in the AT25PE16-MHF-Y is factory-programmed with a unique device identifier used for cryptographic binding in secure boot flows. It is read-only, non-erasable, and immune to software commands - providing a hardware-rooted identity anchor. This register is separate from user memory and cannot be overwritten; it is accessed via dedicated JEDEC-standard ID read instructions. The AT25PE16-MHF-Y leverages this for anti-cloning and firmware authenticity verification.

Can the AT25PE16-MHF-Y operate reliably at 2.3 V across the full industrial temperature range?

Yes, the AT25PE16-MHF-Y is fully specified and tested for operation from 2.3 V to 3.6 V across the full industrial temperature range (−40°C to +85°C). All key parameters - including 85 MHz RapidS™ read, 300 nA ultra-deep power-down current, and 100,000-cycle endurance - are guaranteed at 2.3 V minimum supply. The AT25PE16-MHF-Y uses internal charge pump compensation to maintain timing and erase/program margins at the lowest voltage point.