Renesas AT25PE16-SSHF-T

Overview

AT25PE16-SSHF-T from Adesto Technologies is a 16-Mbit serial Flash memory with SPI interface, optimized for sequential data access in embedded systems. It features dual 512/528-byte SRAM buffers, supports RapidS™ high-speed read up to 85 MHz, and delivers 6 ns clock-to-output timing. Used in firmware storage, voice/image buffering, and code execution in industrial controllers and IoT edge nodes.

For engineers reviewing the AT25PE16-SSHF-T datasheet, AT25PE16-SSHF-T pinout, AT25PE16-SSHF-T application, or AT25PE16-SSHF-T equivalent, key selection criteria include page-erase flexibility (512/528-byte configurable), ultra-low deep power-down current (300 nA), continuous array read with automatic page-wrap, and hardware write protection via WP pin.

Technical Context

The AT25PE16-SSHF-T implements a serial Flash architecture with two independent SRAM buffers enabling concurrent receive-and-program operation - data can be loaded into one buffer while the other buffers contents are written to main memory. Its RapidS™ interface supports SPI modes 0 and 3 with up to 85 MHz SCK frequency and 6 ns tV (clock-to-output).

Memory organization comprises 4,096 pages of 512 bytes (default) or 528 bytes (customer-selectable), totaling 17,301,504 bits. Erase granularity includes page (512/528 B), block (4 KB), sector (128 KB), and chip (16 Mbit), with self-timed internal erase/program cycles and status register monitoring (EPE, RDY/BUSY).

Key Specifications

Pinout & Package

AT25PE16-SSHF-T is packaged in an 8-lead SOIC (0.208" wide), RoHS-compliant, green package. Pin functions are electrically defined and validated per DS-25PE16-143D–2/2022.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT25PE16-SSHF-T, W25Q16JVSNIQ offers higher raw read speed but lacks concurrent buffer operation and ultra-low power states, while MX25L1606EM2I-12G omits both the dual-buffer architecture and sub-µA power-down - making AT25PE16-SSHF-T uniquely suited for streaming-aware, energy-constrained embedded firmware storage.

Availability

AT25PE16-SSHF-T is available at Aetrix Electronics and suitable for industrial control systems, IoT edge gateways, and medical diagnostic devices requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for AT25PE16-SSHF-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 (now part of Dialog Semiconductor, part of Renesas Electronics) specialized in low-power, high-performance serial Flash and non-volatile memory solutions for resource-constrained embedded systems.

The AT25PE16-SSHF-T belongs to the DataFlash-L® family, designed specifically for sequential-access applications demanding concurrent buffering, ultra-low power, and rapid streaming-targeting voice, image, and firmware storage in industrial and connected devices.

FAQ

What is the default page size of the AT25PE16-SSHF-T, and can it be changed?

The AT25PE16-SSHF-T defaults to 512-byte pages, but supports a customer-selectable 528-byte page option. This configuration is set at manufacturing and cannot be altered in-circuit. The 528-byte variant enables E2PROM emulation by reserving 16 bytes per page for metadata or wear-leveling overhead, while maintaining full 16-Mbit density.

Does the AT25PE16-SSHF-T support true simultaneous read-while-write operation?

The AT25PE16-SSHF-T does not support true simultaneous read-while-write to the same memory region, but achieves effective concurrency via its dual SRAM buffers: while one buffer is being written via SI, the other can be programmed into main memory-or data can be read from main memory or either buffer independently. This eliminates stalls in streaming applications.

What is the purpose of the RESET pin on the AT25PE16-SSHF-T, and is it required?

The RESET pin on the AT25PE16-SSHF-T provides hardware-initiated abort of ongoing program/erase operations and forces the internal state machine back to idle. It is not mandatory-internal power-on reset ensures safe initialization-but recommended for systems requiring deterministic recovery from bus errors or watchdog timeouts. If unused, tie RESET high externally.

How does the WP pin interact with software-based write protection on the AT25PE16-SSHF-T?

The WP pin on the AT25PE16-SSHF-T enforces unconditional hardware-level write inhibition: when pulled low, it overrides all software protection mechanisms-including Sector Protection Register settings-and blocks all program and erase commands. This provides fail-safe protection against firmware corruption during power transients or software faults.

What are the timing differences between the four Continuous Array Read opcodes (01h, 03h, 0Bh, 1Bh) in the AT25PE16-SSHF-T?

The AT25PE16-SSHF-T's Continuous Array Read opcodes define distinct performance/power trade-offs: 01h (Low Power Mode) supports up to fCAR3 (≤15 MHz) with no dummy bytes; 03h (Legacy Low Freq) supports up to fCAR2 (≤33 MHz); 0Bh (High Freq) supports up to fCAR1 (≤50 MHz) with one dummy byte; 1Bh (RapidS™) supports up to fCAR4 (≤85 MHz) with two dummy bytes-enabling optimal selection per system clock budget.