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ATSAM4LS4AA-AU
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Product Detailed Parameters
- Description：IC MCU 32BIT 256KB FLASH 48TQFP
- Series：SAM4L
- Mfr：Microchip Technology
- Package：Tray
- Core Processor：ARM® Cortex®-M4
- Core Size：32-Bit Single-Core
- Speed：48MHz
- Connectivity：I2C, IrDA, LINbus, SPI, UART/USART, USB
- Peripherals：Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O：32
- Program Memory Size：256KB (256K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：32K x 8
- Voltage - Supply (Vcc/Vdd)：1.68V ~ 3.6V
- Data Converters：A/D 3x12b; D/A 1x10b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：48-TQFP (7x7)
- Package / Case：48-TQFP
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Overview
The ATSAM4LS4AA-AU is a 32-bit ARM Cortex-M4 microcontroller from the Microchip SAM4L series, operating at frequencies up to 48MHz. It features 256 kB of embedded Flash memory and 32 kB of SRAM within a 48-lead TQFP package. The device supports a single power supply ranging from 1.68V to 3.6V. Key peripherals include a USB 2.0 Device interface, four TWI interfaces, three USARTs with SPI mode capability, one Master SPI, and a 16-channel 12-bit ADC. It incorporates picoPower technology for ultra-low power consumption.
Feature Summary
- Integrates picoPower technology enabling active current consumption down to 90 µA/MHz with configurable voltage scaling.
- Supports multiple low-power modes including WAIT, RETENTION, and BACKUP, offering fast wake-up capabilities and minimal current draw.
- Includes an on-chip Advanced Encryption System (AES) module compliant with FIPS 197 for secure data processing.
- Features a Peripheral Event System allowing direct peripheral-to-peripheral communication without CPU intervention.
Applications
- Battery-powered portable devices requiring extended operational life
- Secure IoT endpoints utilizing hardware encryption
- USB-enabled consumer electronics and peripherals
- Low-power industrial monitoring systems
Procurement Notes
Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with required voltage levels and interface configurations before integration. Cross-reference datasheet revision history for any pinout or functional updates.
Selection Notes
Select this component when a balance of moderate Flash capacity and ultra-low power performance is required. The SAM4LS sub-series lacks the LCD controller found in the LC variant but retains USB host/device capabilities. Evaluate peripheral availability against application needs, as I/O multiplexing may limit simultaneous function usage.
Part Context
This part belongs to the SAM4L family, designed for high-performance, low-power applications. It shares the Cortex-M4 core architecture with other SAM4 variants but distinguishes itself through optimized power management features and specific peripheral sets tailored for battery-operated environments.
Replacement Considerations
ATSAM4LC4AA-AU: Offers similar specifications but includes an LCD controller and AES module; verify if these additional features are necessary or if they impact cost and availability.
FAQ
Does the ATSAM4LS4AA-AU support USB Host functionality?
No, the SAM4LS sub-series supports only USB Device functionality. The SAM4LC sub-series is required for Embedded Host support.
What is the maximum clock frequency for this microcontroller?
The ARM Cortex-M4 core runs at frequencies up to 48 MHz.
