| Parameter | Value |
|---|---|
| CPU | ARM7TDMI |
| Output Compare channels | 3 |
| Hardware QTouch Acquisition | No |
| Pin Count | 64 |
| 32kHz RTC | Yes |
| Max. Operating Frequency | 55 MHz |
| USB Speed | Full Speed |
| EEPROM (Bytes) | 0 |
| DRAM Memory | No |
| ADC Speed (ksps) | 384 |
| Calibrated RC Oscillator | No |
| Crypto Engine | No |
| SPI | 1 |
| Max I/O Pins | 32 |
| Temp. Range (deg C) | -40 to 85 |
| Camera Interface | No |
| Graphic LCD | No |
| ADC channels | 8 |
| DAC Channels | 0 |
| MPU / MMU | no / no |
| External Bus Interface | 0 |
| FPU | No |
| Ext Interrupts | 32 |
| Self Program Memory | NO |
| Operating Voltage (Vcc) | 3.0 to 3.6 |
| PWM Channels | 4 |
| picoPower | No |
| Timers | 3 |
| SSC | 1 |
| I/O Supply Class | 1.8/3.3 |
| Video Decoder | No |
| Flash (Kbytes) | 32 Kbytes |
| USB Interface | Device |
| Temp. Sensor | No |
| Resistive Touch Screen | No |
| DAC Resolution (bits) | 0 |
| UART | 3 |
| ADC Resolution (bits) | 10 |
| TWI (I2C) | 1 |
| NAND Interface | No |
| SRAM (Kbytes) | 8 |
| USB Transceiver | 1 |
| Input Capture Channels | 3 |
| 系列 | AT91SAM |
| 核心处理器 | ARM7 |
| 芯体尺寸 | 16/32-Bit |
| 速度 | 55MHz |
| RAM容量 | 8K x 8 |
| 程序存储器类型 | FLASH |
| 程序存储器容量 | 32KB (32K x 8) |
| 输入/输出数 | 32 |
| 振荡器型 | Internal |
| 数据转换器 | A/D 8x10b |
| 连通性 | I²C, SPI, SSC, UART/USART, USB |
| 工作电压 | 1.65 V ~ 1.95 V |
| 工作温度 | -40°C ~ 85°C |
| 周边设备 | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
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 16KB of flash and 4KB 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 SAM7S321 operates from 1.65V to 3.6V and is available in 64-pin QFN and LQFP packages.
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