This document describes the features and characteristics of a product. The product incorporates the ARM7TDMI® ARM® Thumb® processor core, which has a high-performance 32-bit RISC architecture and a high-density 16-bit instruction set. It also features 256K bytes of on-chip static random access memory (SRAM) and 1024K words of 16-bit flash memory. The product also includes a fully programmable external bus interface, an interrupt controller, a timer/counter, USARTs, and other features. Additionally, the product has advanced power-saving features and can operate within a wide temperature range.
The AT91FR40162S is a 16/32‑bit microcontroller from Atmel’s AT91 family, based on the ARM7TDMI core. It integrates 256 KB of SRAM, 2 MB of Flash memory, two USARTs, three 16‑bit timer/counters, a programmable watchdog, and an external bus interface supporting up to eight chip selects.
The device is offered in a 121‑ball BGA package (10 × 10 × 1.2 mm) with a temperature range of –40 °C to 85 °C. Power is supplied via separate VDDCORE and VDDIO pins, allowing flexible I/O voltage levels. Detailed pin descriptions, block diagrams, and ordering codes are provided for designers.
| On‑chip SRAM | 256 KB |
|---|---|
| Flash memory | 2 MB (1024 K words, 16‑bit) |
| External address space | 64 MB |
| Data bus width | 32‑bit |
| Core frequency range | 0 Hz to 75 MHz |
| I/O voltage range | 2.7 V to 3.6 V (I/O), 1.65 V to 1.95 V (core) |
| Operating temperature | -40 °C to 85 °C |
| Package | 121‑ball BGA, 10 × 10 × 1.2 mm |
The microcontroller includes 256 KB of internal SRAM.
The device contains two independent USARTs.
Up to 64 MB of external address space can be accessed.