AT91 ARM Thumb-based Microcontrollers AT91SAM7A1 Summary
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AT91SAM7A1-AU | AT91SAM7A1-AU (pdf) |
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• Processor Core High-performance 32-bit RISC High-density 16-bit Thumb Instruction Set Leader in MIPS/Watt Embedded ICE In Circuit Emulation • 4 Kbytes Internal RAM • Clock Manager CM with Programmable PLL PLL Multiplier from x2 to x20 kHz Oscillator for Low-power Operation Master Clock Divider/multiplier • Fully Programmable External Bus Interface EBI through Advanced Memory Controller AMC Maximum External Address Space of 16 Mbytes, Up to Six Chip Select Lines • 8-level Priority, Vectored Interrupt Controller Individually Maskable, Two External Interrupts including One Fast Interrupt Line • 11-channel Peripheral Data Controller PDC • 49 Programmable I/O Lines • One 3-channel 16-bit General Purpose Timers GPT Three Configurable Modes Counter, PWM, Capture Three Multi-purpose I/O Pins Per Channel • Four 16-bit Simple Timers ST • 4-channel 16-bit Pulse Width Modulation PWM • Two 16-bit Capture Modules CAPT • CAN Controller 2.0A and 2.0B Full CAN 16 Buffers • Three USARTs Six Peripheral Data Controller PDC Channels Support for Up to 9-bit Data Lengths Support for LIN Software Protocol • Master SPI Interface Two Peripheral Data Controller PDC Channels 8- to 16-bit Programmable Data Length Four External Chip Select Lines • One 8-channel 10-bit Analog-to-digital Converter ADC One Peripheral Data Controller PDC Channel • Programmable Watch Timer WT • Programmable Watchdog WD • Power Management Controller PMC CPU and Peripherals Can Be Deactivated Individually • Fully Static Operation Up to 40 MHz 3.0V to 3.6V Core, Memory and Analog Voltage Range V to 5.5V Compliant I/Os -40° to +85°C Operating Temperature Range • Available in a 144-pin LQFP AT91 ARM Thumb-based Microcontrollers AT91SAM7A1 Summary NOTE This is a summary document. The complete document is available on the Atmel website at The AT91SAM7A1 is a member of the Atmel Smart ARM Microcontrollers product family, based on the ARM7TDMI embedded processor. This processor has a high-performance 32-bit RISC architecture with a high-density 16-bit instruction set and very low power consumption. In addition, a large number of internally banked registers result in very fast exception handling, making the device ideal for real-time control applications. The AT91SAM7A1 has a direct connection to off-chip memory, including Flash, through the fully-programmable External Bus Interface. An 8-level priority vectored Interrupt Controller in conjunction with the Peripheral Data Controller significantly improves the real-time performance of the device. The device is manufactured using high-density CMOS technology. By combining the ARM7TDMI processor with an on-chip RAM and a wide range of peripheral functions on a monolithic chip, the AT91SAM7A1 is a powerful device that provides a flexible, cost-effective solution to many compute-intensive embedded control applications in the industrial world. 2 AT91SAM7A1 Block Diagram Figure AT91SAM7A1 Block Diagram 5V-compliant AT91SAM7A1 3V3 Supply VDDCORE GND IRQ0 FIQ SCANEN TDI TDO TCK TMS TEST NWAIT 3V3 Supply 5V-compliant 3V3 Supply 5V-compliant VDDIO GND SPCK/MPIO MISO/MPIO MOSI/MPIO NPCS0/MPIO NPCS1/MPIO NPCS2/MPIO NPCS3/MPIO RXD0/MPIO TXD0/MPIO SCK0/MPIO RXD1/MPIO TXD1/MPIO SCK1/MPIO RXD2/MPIO TXD2/MPIO SCK2/MPIO T0TIOA0/MPIO T0TIOB0/MPIO T0TCLK0/MPIO T0TIOA1/MPIO T0TIOB1/MPIO T0TCLK1/MPIO T0TIOA2/MPIO T0TIOB2/MPIO T0TCLK2/MPIO I/O Power Core Power Supply Supply SPI PIO 2 PDC Channels Generic Interrupt Controller 11 Channel PDC Controller Select Arbiter ASB Controller JTAG Advanced Memory Controller Ordering Information Table AT91SAM7A1 Ordering Information Ordering Code Package AT91SAM7A1-AU LQFP144 AT91SAM7A1 Package Type Green Temperature Operating Range Industrial -40° C to +85° C 6048CS Date 22-Jul-04 03-Mar-05 29-JUN-06 Comments First issue. Removed Preliminary status. Changed package from TQFP to LQFP, type Green. Removed references to Automotive applications. “Features” on page 1, “Description” on page 2 replaced with features and description from full datasheet. Change Request Ref. 2740 16 AT91SAM7A1 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel 41 26-426-5555 Fax 41 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel 852 2721-9778 Fax 852 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel 81 3-3523-3551 Fax 81 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel 1 408 441-0311 Fax 1 408 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel 33 2-40-18-18-18 Fax 33 2-40-18-19-60 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel 33 4-42-53-60-00 Fax 33 4-42-53-60-01 1150 East Cheyenne Mtn. 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