Microchip Technology AT91SAM7S256D-AU
| Parameters | |
|---|---|
| Series | SAM7S |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 64-LQFP |
| Mfr | Microchip Technology |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Supplier Device Package | 64-LQFP (10x10) |
| Speed | 55MHz |
| Oscillator Type | Internal |
| Core Processor | ARM7® |
| RAM Size | 64K x 8 |
| Number of I/O | 32 |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Voltage - Supply (Vcc/Vdd) | 1.65V ~ 1.95V |
| EEPROM Size | - |
| Program Memory Type | FLASH |
| Connectivity | I²C, SPI, SSC, UART/USART, USB |
| Core Size | 16/32-Bit |
| Program Memory Size | 256KB (256K x 8) |
| Data Converters | A/D 8x10b |
| Package | Tray |
| Product Status | Active |
| Base Product Number | AT91SAM7S256 |
| REACH Status | REACH Unaffected |
| Other Names | AT91SAM7S256DAU |
| Standard Package | 160 |
| ECCN | 3A991A2 |
| HTSUS | 8542.31.0001 |
AT91SAM7S256D-AU 32-bit ARM7TDMI-based MCU
The AT91SAM7S256D-AU from Microchip Technology (formerly Atmel) is a high-performance 32-bit ARM7TDMI-based microcontroller designed for embedded applications requiring robust processing capabilities, extensive memory resources, and comprehensive peripheral integration. This advanced MCU features 256 KB of high-speed flash memory and 64 KB of SRAM, operating at a maximum frequency of 55 MHz to deliver up to 60 MIPS of processing power while maintaining low power consumption through advanced power management techniques.
The MCU chip operates from a single 3.3V supply and incorporates a wide range of peripherals including USB 2.0 Full-Speed Device, CAN controller, SPI, TWI, USART interfaces, and an 8-channel 10-bit ADC, making it ideal for industrial automation, automotive systems, medical devices, and consumer applications where reliable real-time performance and connectivity are essential. The AT91SAM7S256D-AU's combination of high computational efficiency, memory capacity, and extensive communication interfaces makes it particularly suitable for applications such as motor control, data acquisition, and embedded networking that demand both processing power and peripheral flexibility.
AT91SAM7S256D-AU Applications
The AT91SAM7S256D-AU is extensively used in industrial control systems including programmable logic controllers (PLCs), motor drives, and process monitoring equipment where its real-time performance and communication interfaces enable complex control algorithms. Automotive applications include body control modules, diagnostic equipment, and infotainment systems requiring CAN connectivity and robust operation in harsh environments. Medical devices such as patient monitors, infusion pumps, and diagnostic equipment utilize the MCU's processing power and analog peripherals for signal processing and data management. Consumer applications include smart home controllers, gaming accessories, and audio equipment leveraging the USB connectivity and processing capabilities. Additional applications include building automation, security systems, and telecommunications equipment where the device's combination of performance, memory resources, and peripheral integration meets demanding application requirements while maintaining cost-effectiveness.
Alternative ARM7 Microcontroller Recommendations
● LPC2138FBD64 (NXP Semiconductors): An ARM7TDMI-based microcontroller with 512 KB flash and 32 KB RAM, featuring multiple serial interfaces and 10-bit ADC for embedded control applications.
● STR710FZ2T6 (STMicroelectronics): A 32-bit ARM7TDMI MCU with 256 KB flash and 64 KB RAM, incorporating CAN, USB, and multiple timer peripherals for industrial applications.
● TMS470MF06616 (Texas Instruments): An ARM7-based automotive microcontroller with 384 KB flash and 16 KB RAM, offering CAN and LIN interfaces for automotive body electronics.
● MCIMX253DJM4A (NXP): An ARM9-based microcontroller with enhanced performance and peripheral set, suitable for applications requiring higher processing capabilities.
