The AT91SAM7S64C-AU is a high-performance, low-power 32-bit ARM microcontroller introduced by Atmel Corporation, belonging to the SAM7S series. This microcontroller combines powerful processing capabilities with a wealth of peripheral resources, making it an ideal choice for various embedded system applications.
Atmel’s SAM7S is a series of low pincount Flash microcontrollers based on the 32-bit ARM RISC processor. It features a high-speed Flash and an SRAM, a large set of peripherals, including a USB 2.0 device (except for the SAM7S32 and SAM7S16), and a complete set of system functions minimizing the number of external components.
The device is an ideal migration path for 8-bit microcontroller users looking for additional performance and extended memory.
The embedded Flash memory can be programmed in-system via the JTAG-ICE interface or via a parallel interface on a production programmer prior to mounting. Built-in lock bits and a security bit protect the firmware from accidental overwrite and preserves its confidentiality.
The SAM7S Series 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 RC oscillator.
The SAM7S Series are general-purpose microcontrollers. Their integrated USB Device port makes them ideal devices for peripheral applications requiring connectivity to a PC or cellular phone. Their aggressive price point and high level of integration pushes their scope of use far into the cost-sensitive, high-volume consumer market.
1. Basic Parameters
① Core Processor — ARM7TDMI, supporting 16/32-bit instruction sets with a maximum clock frequency of up to 55MHz.
② Memory Configuration — 64KB of Flash memory for storing program code and constant data, and 16KB of SRAM as data RAM for storing temporary variables and stack data.
③ Peripheral Interfaces — Providing various communication interfaces such as I²C, SPI, SSC, UART/USART, USB, as well as an 8-channel, 10-bit Analog-to-Digital Converter (ADC) for easy connection and data exchange with other devices and sensors.
④ I/O Pins — Featuring 32 programmable I/O pins that support multiple voltage levels and multiplexing functions.
⑤ Power Management — Operating voltage range from 1.65V to 1.95V, with intelligent power management capabilities to dynamically adjust power consumption based on actual application needs.
⑥ Package Form — Adopting a 64-pin LQFP package, which is compact and easy to integrate.
⑦ Operating Temperature Range — From -40°C to 85°C, suitable for various harsh industrial environments.
2. Technical Advantages
① High Performance and Low Power Consumption — Combining a high-performance processor with low-power design, this microcontroller provides powerful processing capabilities while maintaining low power consumption, suitable for battery-powered applications. It supports multiple low-power modes such as idle mode and power-down mode, effectively reducing power consumption and extending battery life when not in use.
② Rich Peripheral Interfaces — Offering a variety of communication and analog interfaces, facilitating developers to connect and exchange data with external devices and sensors, reducing system design complexity.
③ Reliable Power Management — With intelligent power management functions, it can dynamically adjust states based on actual application needs, extending battery life and improving system stability and reliability.
④ Easy Development and Debugging — Supporting JTAG-ICE online simulation and debugging interfaces, making it convenient for developers to debug code and optimize performance, reducing development difficulty and cost.
3. Applications
① Industrial Control
Programmable Logic Controllers (PLCs) — Used in industrial automation control for logical operations, data acquisition, and device control.
Motor Control — Supporting PWM output and encoder interfaces, suitable for controlling DC motors, stepper motors, and servo motors.
Sensor Interfaces — Connecting various sensors such as temperature sensors, pressure sensors, and photoelectric sensors through SPI, I2C, or UART interfaces.
Industrial Communication — Supporting industrial communication protocols such as CAN and RS485 for data exchange between devices.
② Consumer Electronics
In the consumer electronics field, the low power consumption and high integration of AT91SAM7S64C-AU make it an ideal choice.
Smart Home Devices — Used for controlling smart lighting, smart sockets, thermostats, and other devices.
Wearable Devices — Suitable for low-power applications such as smartwatches and health monitoring devices.
Digital Cameras and Printers — Used for image processing, data transmission, and device control.
Household Appliances — Control systems for appliances such as washing machines, refrigerators, and microwaves.
③ Medical Equipment
Portable Medical Devices — Such as glucometers, blood pressure monitors, ECG machines, supporting data acquisition, processing, and display.
Medical Monitoring Systems — Used for real-time monitoring of patients' vital signs and transmitting data through communication interfaces.
Medical Instrument Control — Used to control the operation of medical equipment such as infusion pumps and ventilators.
④ Automotive Electronics
Body Control — Such as window control, seat adjustment, and lighting control.
Dashboard Systems — Used to display vehicle speed, fuel consumption, engine status, and other information.
In-car Entertainment Systems — Supporting audio processing, display control, and user interaction.
In-car Communication — Enabling communication between devices within the vehicle via CAN bus.
⑤ Communication Equipment
The communication interfaces and data processing capabilities of AT91SAM7S64C-AU make it important in communication equipment.
Wireless Modules — Used for controlling wireless communication modules such as Bluetooth, Wi-Fi, and ZigBee.
Network Equipment — Control and management of network devices such as routers and switches.
Data Acquisition and Transmission — Used in remote data acquisition and transmission systems supporting multiple communication protocols.
⑥ IoT Devices
Smart Sensor Nodes — Used in environmental monitoring, agricultural monitoring, and other scenarios.
Gateway Devices — Enabling data conversion and transmission between different communication protocols.
Edge Computing Devices — Used for local data processing and decision-making, reducing the burden on the cloud.
⑦ Test and Measurement Equipment
Data Acquisition Systems — Used for high-speed data acquisition and real-time processing.
Signal Generators — Supporting PWM and DAC outputs for generating various signals.
Instrument Control — Control cores for instruments such as oscilloscopes and spectrum analyzers.
⑧ Security Systems
Access Control Systems — Supporting RFID, fingerprint recognition, and other functions.
Monitoring Systems — Used for video acquisition, storage, and transmission.
Alarm Systems — Realizing sensor data acquisition and alarm triggering.
