SAM7L128_14 Datasheet, PDF (1/549 Pages) ATMEL Corporation – AT91SAM ARM-based Flash MCU

AT91SAM ARM-based Flash MCU
SAM7L128/SAM7L64
DATASHEET
Description
The AT91SAM7L128/64 are low power members of Atmel’s Smart ARM Microcontroller family based on the 32-
bit ARM7^™ RISC processor and high-speed Flash memory.
• AT91SAM7L128 features a 128 Kbyte high-speed Flash and a total of 6 Kbytes SRAM.
• AT91SAM7L64 features a 64 Kbyte high-speed Flash and a total of 6 Kbytes SRAM.
They also embed a large set of peripherals, including a Segment LCD Controller and a complete set of system
functions minimizing the number of external components.
These devices provide an ideal migration path for 8-bit microcontroller users looking for additional performance,
extended memory and higher levels of system integration with strong constraints on power consumption.
Featuring innovative power reduction modes and ultra-low-power operation, the AT91SAM7L128/64 is tailored
for battery operated applications such as calculators, toys, remote controls, medical devices, mobile phone
accessories and wireless sensors.
The embedded Flash memory can be programmed in-system via the JTAG-ICE interface or via a parallel inter-
face on a production programmer prior to mounting. Built-in lock bits and a security bit protect the firmware from
accidental overwrite and preserve its confidentiality.
The AT91SAM7L128/64 system controller includes a reset controller capable of managing the power-on
sequence of the microcontroller and the complete system. Correct device operation can be monitored by a built-
in brownout detector and a watchdog running off an integrated oscillator.
By combining the ARM7TDMI processor with on-chip Flash and SRAM, and a wide range of peripheral func-
tions, including USART, SPI, External Bus Timer Counter, RTC and Analog-to-Digital Converters on a
monolithic chip, the AT91SAM7L128/64 microcontroller is a powerful device that provides a flexible, cost-effec-
tive solution to many embedded control applications.
6257B–ATARM–01-Feb-13