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Atmels AT91SAM7S is a range of general purpose Flash microcontrollers that are based on the 32-bit ARM RISC processor. These devices are an ideal migration path for 8-bit users looking for the additional performance and extended memory of a 32-bit device but at a competitively low price.
The comprehensive feature set of these devices, which minimises the number of external components required, and which includes high-speed Flash, SRAM, integrated USB2.0 device and excellent power management functions, make them perfectly suited to mobile and peripheral applications requiring connectivity to a PC, PDA or cellular phone, and where low power consumption is a critical design goal.
A further benefit of these devices is that they are programmable in-circuit via the JTAG-ICE interface, using the AT91SAM-ICE 73-4262 (see this section for details), or alternatively via a parallel interface on a production programmer prior to mounting. Built-in locking and security protects the firmware from deliberate or accidental overwrite and preserves data confidentiality.
- 64 or 256KByte of Flash memory
- Housed in an LQFP64 package
- High density 16-bit instruction set
- Leading device in MIPS/W
- 10,000 Write cycles and 10-year data retention
- Advanced power management functions
- Debug unit
- Embedded Flash controller
- Low power 3 to 20MHz clock generator
- Watchdog
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| Device | Flash | SRAM | USB Device | USART | External | PDC | TC | I/O Lines | | | memory | | port | | interrupt | Channels | Channels | | | | | | | | source | | | | | | AT91SAM7S64 | 64KByte | 16KByte | 1 | 2 | 2 | 11 | 3 | 32 | | | AT91SAM7S256 | 256KByte | 64KByte | 1 | 2 | 2 | 11 | 3 | 32 | | |
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