Adesto Technologies AT25DF321A-SH-T
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 8-SOIC (0.209", 5.30mm Width) |
| Mfr | Adesto Technologies |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TC) |
| Technology | FLASH |
| Supplier Device Package | 8-SOIC |
| Memory Size | 32Mbit |
| Memory Type | Non-Volatile |
| Voltage - Supply | 2.7V ~ 3.6V |
| Clock Frequency | 100 MHz |
| Memory Organization | 256 Bytes x 16384 pages |
| Memory Format | FLASH |
| Memory Interface | SPI |
| Write Cycle Time - Word, Page | 7µs, 3ms |
| Package | Tape & Reel (TR) |
| Product Status | Not For New Designs |
| Base Product Number | AT25DF321 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,000 |
| ECCN | 3A991B1A |
| HTSUS | 8542.32.0071 |
AT25DF321A-SH-T 32Mb serial flash memory SPI 100 MHz 8-SOIC
The AT25DF321A-SH-T is a high-performance 32-megabit (4MB) serial flash memory chip manufactured by Microchip Technology (formerly Atmel), designed for embedded systems requiring reliable, non-volatile data storage. It utilizes a single-supply voltage range of 2.7V to 3.6V and supports the SPI (Serial Peripheral Interface) protocol with clock frequencies up to 104 MHz, enabling fast read and write operations. The device features a uniform 4KB sector architecture, a 64KB block erase capability, and a deep power-down mode to minimize energy consumption. Its compact 8-pin SOIC package makes it suitable for space-constrained PCB layouts, while its industrial-grade temperature range (-40°C to +85°C) ensures robust performance in harsh environments.
Key Applications
The AT25DF321A-SH-T is widely used in embedded systems such as industrial controllers, automotive infotainment units, and consumer electronics (e.g., set-top boxes, gaming consoles) where reliable code storage and fast boot times are critical. Its high-speed SPI interface and low power consumption make it ideal for battery-powered devices like wearables and IoT sensors. Additionally, its uniform sector architecture simplifies firmware updates and data logging tasks in medical devices and telecommunications equipment.
Alternative flash memory Models
● AT25DF081A-SH-T: An 8-megabit (1MB) variant of the AT25DF321A, offering identical pinout and features but with lower storage capacity for cost-sensitive applications.
● W25Q32JVSSIQ: A 32-megabit flash memory chip from Winbond with a Quad-SPI interface for higher throughput (up to 40 MB/s) and a 4KB sector size, suitable for high-performance systems.
● S25FL321K0XMFI043: A 32-megabit flash memory by Cypress (now Infineon) with a 3.3V supply, 100K program/erase cycles, and a 64KB block erase feature, optimized for automotive and industrial use.
● MX25L3206EM2I-10G: A 32-megabit chip from Macronix with a 104 MHz SPI interface, 4KB sectors, and a -40°C to +105°C temperature range, ideal for ruggedized applications.
