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Renesas AT25PE20-SSHN-T
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- Part No.:
- AT25PE20-SSHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25PE20-SSHN-T.pdf
- Description:
- IC FLASH 2MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:5,800
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Product details
Overview
AT25PE20-SSHN-T from Adesto Technologies is a 2-Mbit serial Flash memory with SPI interface, 1.65V–3.6V single-supply operation, up to 85MHz read speed, 6ns clock-to-output time, and configurable 256/264-byte page size - used for firmware storage, boot code, and data logging in space-constrained industrial microcontrollers.
For engineers reviewing the AT25PE20-SSHN-T datasheet, AT25PE20-SSHN-T pinout, AT25PE20-SSHN-T application, or AT25PE20-SSHN-T equivalent, key selection factors include RapidS™ high-speed read support, ultra-low 300nA deep power-down current, flexible erase granularity (page/block/sector/chip), SRAM buffer-assisted E²PROM emulation, and SOIC/UDFN package compatibility with legacy PCB footprints.
Technical Context
The AT25PE20-SSHN-T implements a sequential-access DataFlash-L® architecture with dual-mode SPI (modes 0 and 3), eliminating parallel address/data buses to reduce pin count and layout complexity. It integrates one 256/264-byte SRAM buffer for scratchpad use and supports self-contained read-modify-write operations enabling byte-alterable emulation without external logic.
Its memory array is organized as 1,024 pages (256 or 264 bytes each), partitioned into sectors (32KB), blocks (2KB), and pages (256/264B), with independent hardware write protection via WP pin and software-controlled sector protection. All program/erase cycles are fully self-timed with status register monitoring (RDY/BUSY, EPE).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 2,162,688 bits (2-Mbit) organized as 1,024 pages |
| Page size | 256 bytes (default) or 264 bytes (customer-selectable) |
| Max read speed | 85MHz SCK (RapidS™ mode), with 6ns tV clock-to-output |
| Power consumption | 300nA ultra-deep power-down (typical), 25µA standby (typical) |
| Erase granularity | Page (256/264B), block (2KB), sector (32KB), chip (2-Mbit) |
| Endurance & retention | 100,000 program/erase cycles per page; 20-year data retention |
| Operating temperature | −40°C to +85°C (full industrial range) |
Pinout & Package
AT25PE20-SSHN-T is supplied in an 8-lead SOIC package (0.150″ wide), with pins arranged in standard dual-inline configuration. Pin functions are electrically defined and validated per DS-25PE20–139D–2/2022.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; initiates command sequence on high-to-low transition and terminates on low-to-high |
| SCK | Serial Clock | Input clock; latches SI data on rising edge, clocks SO data on falling edge |
| SI | Serial Input | Command/address/data input; ignored when CS is deasserted |
| SO | Serial Output | Data output; tri-stated when CS is deasserted |
| WP | Write Protect | Hardware lock; prevents program/erase of protected sectors regardless of software state |
| RESET | Reset | Active-low; aborts ongoing operation and resets internal state machine |
| VCC | Power Supply | Single 1.65V–3.6V supply; powers all read/program/erase functions |
| GND | Ground | Reference return path for VCC and I/O signals |
Key Features
| Feature | Design Value |
|---|---|
| RapidS™ high-speed interface | Enables 85MHz continuous reads with zero wait states and automatic page-wrap addressing |
| Configurable page size | Supports 256B (default) or 264B (customer option) pages - optimizes buffer alignment for E²PROM emulation |
| Dual-mode SPI compatibility | Operates in both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) for host controller flexibility |
| SRAM data buffer | 256/264-byte dedicated buffer enables atomic read-modify-write without external RAM or complex firmware |
| Ultra-low power modes | 300nA ultra-deep power-down and 5µA deep power-down allow battery-backed systems to retain memory state for years |
Applications
| Firmware Storage | Boot Code Execution |
|---|---|
Use Scenario: Storing MCU firmware images in resource-constrained embedded systems where PCB area and BOM count must be minimized. IC Role / Device Role / Timing Role: Non-volatile serial Flash memory providing sequential access to executable code during cold start and field updates. Use Value: 85MHz RapidS™ read speed reduces boot latency; 256B page size aligns with typical bootloader sector boundaries. | Use Scenario: Hosting primary boot loader and secure boot keys in industrial controllers requiring tamper-resistant, field-upgradable storage. IC Role / Device Role / Timing Role: Trusted code repository with hardware write protection (WP pin) and factory-programmed 128-byte unique ID for device authentication. Use Value: 128-byte security register enables cryptographic key binding; sector-level erase prevents partial corruption during OTA updates. |
| Data Logging | E²PROM Emulation |
Use Scenario: Capturing sensor readings and event timestamps in battery-powered IoT nodes operating at −40°C to +85°C. IC Role / Device Role / Timing Role: Low-power sequential storage with page/block erase flexibility to extend flash endurance across frequent small writes. Use Value: 300nA ultra-deep power-down extends battery life; page-erase granularity minimizes wear on frequently updated log entries. | Use Scenario: Replacing discrete EEPROM in medical devices needing byte-alterable non-volatile parameter storage without additional ICs. IC Role / Device Role / Timing Role: Self-contained E²PROM emulator using SRAM buffer + main memory page program with built-in erase. Use Value: Single-command read-modify-write eliminates firmware overhead; 100,000-cycle endurance meets Class III medical device requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DF20A-SSH-T | Same 2-Mbit density and SOIC-8 package, but lacks RapidS™ mode and SRAM buffer; max read speed 50MHz | No native E²PROM emulation support; requires external logic or firmware for byte-alterable writes | Select only if RapidS™ speed and buffer-assisted R-M-W are not required |
| W25Q20EWUXIE | 2-Mbit Quad SPI Flash with DTR support; 133MHz read, but no SRAM buffer or RapidS™-specific timing optimizations | Requires QSPI host interface; no hardware WP pin - relies on software protection only | Prefer when higher bandwidth is critical and host supports Quad SPI; avoid if WP pin or buffer-based emulation is mandatory |
Compared with AT25PE20-SSHN-T, AT25DF20A-SSH-T offers lower cost but sacrifices 85MHz performance and E²PROM emulation capability, while W25Q20EWUXIE delivers higher throughput via Quad SPI yet removes the integrated SRAM buffer and hardware write protection - making AT25PE20-SSHN-T uniquely suited for robust, low-pin-count, buffer-assisted embedded storage.
Availability
AT25PE20-SSHN-T is available at Aetrix Electronics and suitable for firmware storage, boot code execution, and data logging applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT25PE20-SSHN-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-reliability non-volatile memory and analog ICs for industrial and IoT applications.
The AT25PE20-SSHN-T belongs to the DataFlash-L® family, designed specifically for sequential-access, low-pin-count, ultra-low-power embedded storage where traditional parallel NOR/NAND Flash is over-specified.
FAQ
What is the maximum clock frequency supported by AT25PE20-SSHN-T during continuous array read?
The AT25PE20-SSHN-T supports up to 85MHz SCK frequency for Continuous Array Read in RapidS™ High Frequency Mode (0Bh opcode), as specified by fCAR1 in the datasheet. This is the highest operational speed for sustained sequential reads and is enabled only when using the RapidS™ protocol with SPI modes 0 or 3. Lower-frequency read modes (03h and 01h opcodes) support up to fCAR2 and fCAR3 respectively, optimized for reduced power or noise-sensitive environments. The 6ns clock-to-output time ensures minimal latency at full speed.
Does AT25PE20-SSHN-T require external high-voltage programming circuitry?
No, AT25PE20-SSHN-T does not require external high-voltage programming circuitry. It operates entirely from a single 1.65V–3.6V supply for all functions - including read, program, and erase - with all timing internally self-managed. Programming and erase cycles are fully autonomous once initiated via SPI commands; no external voltage pumps, charge pumps, or elevated VPP rails are needed. This simplifies system design and eliminates associated BOM cost and board space.
How does the SRAM buffer in AT25PE20-SSHN-T enable E²PROM emulation?
The AT25PE20-SSHN-T includes a dedicated 256/264-byte SRAM buffer that enables true E²PROM emulation through its single-command "Main Memory Page Program through Buffer with Built-In Erase" (82h opcode). This executes a complete read-modify-write cycle: data is loaded into the buffer, the target page is erased, and the modified data is written - all atomically without host intervention. Unlike standard Flash, this avoids multi-step firmware routines and guarantees atomicity, making AT25PE20-SSHN-T suitable for parameter storage requiring byte-level alterability.
Is AT25PE20-SSHN-T pin-compatible with other Adesto DataFlash-L® devices?
AT25PE20-SSHN-T shares identical pinout and electrical signaling with other 8-lead SOIC-packaged DataFlash-L® devices such as AT25PE40 and AT25PE80, differing only in memory density and timing parameters. However, it is not pin-compatible with earlier AT25DF or AT25F series due to differences in RESET pin functionality and status register mapping. Always verify command set and timing specifications before substitution - especially for RESET behavior and RapidS™ mode enablement.
What package options are available for AT25PE20-SSHN-T, and what does the '-SSHN-T' suffix indicate?
The '-SSHN-T' suffix denotes the 8-lead SOIC (0.150″ wide) package with lead-free, halogen-free, RoHS-compliant finish and tape-and-reel packaging. While the AT25PE20 is also offered in 8-pad UDFN (5 × 6 × 0.6 mm), the -SSHN-T variant is exclusively SOIC. The 'H' indicates green (Pb/Halide-free) compliance, 'N' specifies NiPdAu termination, and 'T' confirms tape-and-reel delivery - critical for automated SMT assembly. No thermal pad or exposed die attach is present in this SOIC variant.
AT25PE20-SSHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 2Mbit
- Memory Organization:
- 256 Bytes x 1024 pages
- Memory Interface:
- SPI
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 3ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25PE20-SSHN-T FAQ
1.How can I place an order for AT25PE20-SSHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25PE20-SSHN-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT25PE20-SSHN-T reliable?
The price and inventory of AT25PE20-SSHN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25PE20-SSHN-T is usually 5 days.
3.What payment methods are accepted for AT25PE20-SSHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25PE20-SSHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25PE20-SSHN-T?
AT25PE20-SSHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25PE20-SSHN-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT25PE20-SSHN-T?
For technical support, including AT25PE20-SSHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25PE20-SSHN-T requirements.
6.How does Aetrix verify that AT25PE20-SSHN-T is sourced from the original manufacturer or authorized distributors?
All AT25PE20-SSHN-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT25PE20-SSHN-T meets industry standards.
7.What is the process for return or replacement of AT25PE20-SSHN-T?
All AT25PE20-SSHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25PE20-SSHN-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT25PE20-SSHN-T part is unused and in its original packaging.
Return procedure for AT25PE20-SSHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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