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产品概述
A member of the Atmel® SAM7S series of flash microcontrollers based on the 32-bit ARM7TDMI® RISC processor. It operates at a maximum speed of 55MHz and features 128KB of flash and 64KB of SRAM. The peripheral set includes a FS USB device and Phy at 12Mbps, UART, two USARTs, TWI, SPI, SSC, two PWM timers, three 16-bit timers, RTT, 8x10-bit ADC and 32 IO lines. It achieves single-cycle instruction access from embedded flash at 27 MIPS. The multi-layer bus matrix, multiple SRAM banks, PDC, and DMA support parallel tasks and maximize data throughput. The SAM7S256 operates from 1.65V to 3.6V and is available in 64-pin LQFP and QFN packages.
关键参数
| Parameter | Value |
| Flash (Kbytes): | 256 Kbytes |
| Pin Count: | 64 |
| Max. Operating Freq. (MHz): | 55 MHz |
| CPU: | ARM7TDMI |
| Hardware QTouch Acquisition: | No |
| Max I/O Pins: | 32 |
| Ext Interrupts: | 32 |
| USB Transceiver: | 1 |
| USB Speed: | Full Speed |
| USB Interface: | Device |
芯片订购型号
| Ordering Code | Package | Speed | Power Supply | Operational Range |
| AT91SAM7S256D-AU | | 55 | 3.0-3.6 | Industrial (A) (-40°C to 85°C) |
| AT91SAM7S256D-MU | QFN R-QFN064_B 64 | 55 | 3.0-3.6 | Industrial (A) (-40°C to 85°C) |
