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AT25FF321A-SSHN-T

Name: AT25FF321A-SSHN-T
Rating: 4.7 (12 reviews)

IC FLASH 32MBIT SPI/QUAD 8SOIC

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Mfr。パート #AT25FF321A-SSHN-T
パッケージ 8-SOIC (0.154, 3.90mm Width)
データシート
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仕様

Supplier	Dialog Semiconductor GmbH
Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
MemoryType	Non-Volatile
MemoryFormat	FLASH
Technology	FLASH - NOR
MemorySize	32Mb (4M x 8)
MemoryInterface	SPI - Quad I/O
ClockFrequency	104 MHz
Voltage-Supply	1.65V ~ 3.6V
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
Package/Case	8-SOIC (0.154, 3.90mm Width)

概要

Description

AT25FF321A-SSHN-T is a Microchip/Atmel 32‑Mbit serial SPI flash memory used to store firmware or data in embedded systems. Key points:
- Capacity: 32 Mbit (4 MBytes) of non-volatile flash.
- Interface: SPI-compatible serial interface in an 8-pin SSHN package.
- Organization: 256-byte pages; 4 KB sectors; 64 KB blocks; supports 4-byte addressing for full array.
- Features: fast read, page program, sector/block erase, write enable/disable, status register, deep power-down.
- Voltage: typically 2.7–3.6 V supply.
- Packaging/Temp: SSHN package with options for industrial temperature ranges (-40°C to +85°C or similar per datasheet).
- Applications: code storage, boot memory, data logging, LUTs.
- Why choose: small pin count, reliable non-volatile storage, widely supported by SPI drivers.
Note: Always consult the datasheet for exact timing, voltage, and package details.

Features

Here are the key features of AT25FF321A-SSHN-T (concise):
- Capacity: 32-Mbit (4 MBytes) serial Flash memory
- Interface: SPI-compatible serial interface (standard/read and fast read)
- Addressing: 3-byte addressing (sufficient for 4 MB)
- Organization: 256-byte page size; erase options include 4 KB sectors and 32 KB/64 KB blocks; bulk erase supported
- Programming: Page program with Write Enable; status/WIP and block-protect features
- Power modes: Active and Deep Power-Down for low current
- Voltage: 2.7 V to 3.6 V operation
- Temperature: Industrial range, typically -40°C to 85°C
- Endurance/Data retention: Typical P/E endurance in the 100k+ range; data retention ~years (typical 20+ years)
- Package: 8-pin package (SSHN variant)
- Security: Write protection options (software/ hardware block protection)
- Applications: Firmware/storage for embedded systems, boot ROM, data logging
Note: exact clock speed (MHz) and some package details may vary by lot; consult the datasheet for precise electrical specs.

Package

It uses an 8‑pin SOIC (Small Outline IC) package (package code SSHN).

Pinout

- Pin count: 8 pins (SPI serial flash package, e.g., SOIC-8)
- Function: Non-volatile serial SPI flash memory (Atmel AT25FF321A); stores data/code with standard SPI interface (CS, SCK, SI, SO) plus WP and HOLD pins, plus VCC and GND.

Manufacturer

- Manufacturer: Microchip Technology Inc. (owns the Atmel product line; AT25FF321A-SSHN-T is a Serial DataFlash memory part)
- What kind of company: A global semiconductor company that designs and manufactures microcontrollers, memory ICs, analog/linear devices, and other embedded components.

Application

AT25FF321A-SSHN-T is a 32‑Mbit SPI serial flash. Typical applications:
- External flash for firmware code and boot loaders
- Firmware update storage
- Program and data storage for embedded systems
- Configuration/calibration data and logs
- Caching/buffering in microcontrollers
Common in automotive, industrial controls, consumer electronics, networking gear, printers and set‑top boxes needing reliable nonvolatile storage with fast SPI access.

Equivalent

Common 32-Mbit SPI flash equivalents (8-pin, 3.3V) to AT25FF321A-SSHN-T:
- Winbond W25Q32FV / W25Q32JV
- Macronix MX25L3206E / MX25L3206F
- Gigadevice GD25Q32C
- ISSI IS25LP032D
- Micron N25Q032 / N25Q032A
- Puya P25Q32H
- Spansion S25FL327S / S25FL327P
Note: verify JEDEC ID, voltage, and timing from datasheets for exact pinout/compatibility.