AT45DB161E-MHD-T

AT45DB161E-MHD-T is Atmel/Microchip’s 16‑Mbit Serial DataFlash memory with an SPI interface. It provides non‑volatile storage equivalent to about 2 MB of flash, optimized for fast random access and page/block erase operations.
Key points:
- Interface: SPI (SCK, SI, SO, CS#) with the DataFlash command set (Read, Page Program, Sector/Block Erase, Chip Erase, Read/Write Status, Write Enable, Deep Power-Down, Release).
- Speed: supports clocking at tens of MHz (typical 50–55 MHz in 3.3 V operation) with high‑speed/continuous read modes.
- Organization: page‑based memory with erase blocks; supports random access and partial page writes.
- Power/Temp: operates on 2.7–3.6 V, with broad temperature ranges available.
- Packaging: MHD-T denotes 8‑lead SOIC, Tape & Reel packaging.
- Applications: firmware storage, data logging, configuration memory, and look‑up tables in embedded systems.
In short, a compact, high‑rate, non‑volatile SPI data flash suitable for embedded storage needs.

Equivalent products (16-Mbit SPI memory with similar interface), not exact DataFlash drop-ins:
- Winbond W25Q16JV / W25Q16FV
- Macronix MX25L1606E / MX25L1606F
- GigaDevice GD25Q16C
- ISSI IS25LPX016
- Spansion/Cypress S25FL016K
Note: DataFlash has unique internal buffering and page/sector architecture; verify page size, sectoring, timing, and packaging for your design.

Here are the key features of AT45DB161E-MHD-T (16-Mbit Serial DataFlash):
- 16-Mbit (2 MB) Serial DataFlash memory with SPI interface
- Two internal 256-byte RAM data buffers
- 256-byte page size; supports Page Program and Buffer-to-Flash operations
- Flexible erase modes: Sector, Block, and Chip erase
- Random and sequential (continuous) read support
- Ready/Busy (RDY/BSY) status and hardware write protection
- Deep power-down mode and low-power standby
- Endurance and data retention typical of DataFlash (e.g., up to ~10^5 P/E cycles; long data retention)
- Supply voltage: 2.7 V to 3.6 V
- Industrial temperature range: -40°C to +85°C
- Package: MHD-T (8-pin) small-outline
Note: exact sector/block sizes and timings are per the datasheet; the above lists cover typical dataflash features.

- Pin count: 8 pins (8-pin package, e.g., SOIC-8; AT45DB161E-MHD-T)
- Function: 16-Mbit SPI serial data flash memory (non-volatile storage). SPI pins: CS, SCK, SI (Data In), SO (Data Out); plus /WP, /HOLD, VCC, VSS.

- Manufacturer: Atmel Corporation (now part of Microchip Technology).
- What kind of company: a semiconductor company that designs and manufactures memory ICs and microcontrollers; Atmel is now a subsidiary of Microchip Technology, a global semiconductor company.

AT45DB161E-MHD-T is a 16-Mbit SPI Serial DataFlash. Typical application areas:
- Embedded systems needing nonvolatile program/data memory (firmware storage, boot code, updates)
- Consumer electronics (set-top boxes, digital cameras, audio players, printers) for firmware and data storage
- Data logging and configuration storage in portable meters, automotive data loggers, handheld instruments
- Industrial control and instrumentation for parameter storage, event logs, and firmware updates
- Medical devices for local data caching and firmware
- Telecommunications and networking gear for logs, configurations, and firmware storage

The AT45DB161E-MHD-T uses an 8‑pin SOIC (Small Outline) package. The trailing -T denotes Tape & Reel packaging.