The document introduces the features and characteristics of AT91SAM7S series processors
This handbook describes the AT91SAM7S256 microcontroller, a low‑pin‑count 32‑bit ARM7TDMI based device. It outlines the core architecture, flash and SRAM memory organization, peripheral set, and power management features.
The document includes block diagrams, signal descriptions, electrical and mechanical characteristics, ordering information, and errata tables, giving developers the data needed for hardware design and firmware development.
| Flash memory size | 256 Kbytes |
|---|---|
| SRAM size | 64 Kbytes |
| Maximum CPU frequency | 30 MHz |
| Core supply voltage | 1.65 V to 1.95 V |
| USB device port | USB 2.0 Full Speed (12 Mbit/s) |
| Package options | 64‑lead LQFP or 64‑pad QFN (green) |
The AT91SAM7S256 contains 256 Kbytes of internal flash memory.
Yes, it provides one USB 2.0 Full Speed device port (except for the AT91SAM7S32/16 variants).
The core supply voltage must be between 1.65 V and 1.95 V.