This document introduces the features of the AT91SAM7L series SAM7L128 and SAM7L64 microcontrollers, including the ARM7TDMI® ARM® Thumb® processor, internal high-speed flash, internal high-speed SRAM, memory controller, reset controller and clock generator.
The AT91SAM7L64 is a low‑power 32‑bit ARM7TDMI‑based microcontroller with 64 KB of high‑speed Flash and 6 KB of SRAM. It integrates a wide range of peripherals such as USART, SPI, ADC, PWM, LCD controller and power‑management features, making it suitable for battery‑operated devices.
The document provides a detailed block diagram, signal description, package options (128‑lead LQFP and 144‑ball LFBGA), electrical characteristics, and ordering codes, along with a revision history for reference.
| Flash memory size | 64 KB |
|---|---|
| SRAM size | 6 KB |
| Supply voltage (VDDIO1) | 1.8 V to 3.6 V |
| Operating temperature range | -40 °C to 85 °C |
| Maximum clock speed | Up to 36 MHz |
| Package options | 128‑lead LQFP (0.5 mm pitch) or 144‑ball LFBGA (0.8 mm pitch) |
The AT91SAM7L64 contains 64 KB of high‑speed Flash memory.
It is offered in a 128‑lead LQFP package with 0.5 mm pitch and a 144‑ball LFBGA package with 0.8 mm pitch.
The device supports Idle, Wait, Backup and Power‑Down (Off) modes to reduce power consumption.