AT91SAM7S321-MU
IC MCU 16/32BIT 32KB FLASH 64QFN
Embedded Microcontrollers
64-VFQFN Exposed Pad
SAM7S
Obsolete
$5.12 / unit (market reference)
MOQ: 59 pcs
Submit your quantity via the inquiry form for a competitive quote within 24 hours.
Parameters
| Parameter | Value |
|---|---|
| Brand | Rochester Electronics, LLC |
| Model | AT91SAM7S321-MU |
| Package / Case | 64-VFQFN Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Core Processor | ARM7® |
| Speed | 55MHz |
| Program Memory Size | 32KB (32K x 8) |
| RAM Size | 8K x 8 |
| Number of I/O | 32 |
| Data Converters | A/D 8x10b |
| Voltage - Supply | 1.65V ~ 1.95V |
| Connectivity | I²C, SPI, SSC, UART/USART, USB |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Supplier Device Package | 64-QFN (9x9) |
| RoHS | RoHS |
| Part Status | Obsolete |
Application & Notes
AT91SAM7S321-MU by Rochester Electronics, LLC is a ARM7® microcontroller widely used in industrial control, motor drives, IoT devices, 3D printer mainboards, and consumer electronics. The 64-VFQFN Exposed Pad package fits automated SMT assembly. Operating temperature is -40°C ~ 85°C (TA) — verify your application environment. Pin-compatible domestic alternatives include GigaDevice GD32 series and Artery AT32 series — note GD32 ADC specs may differ slightly from ST originals.
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All Technical Specifications
| Speed | 55MHz |
| RAM Size | 8K x 8 |
| Core Size | 16/32-Bit |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | I²C, SPI, SSC, UART/USART, USB |
| Number of I/O | 32 |
| Core Processor | ARM7® |
| Data Converters | A/D 8x10b |
| Oscillator Type | Internal |
| Program Memory Size | 32KB (32K x 8) |
| Program Memory Type | FLASH |
| Voltage - Supply (Vcc/Vdd) | 1.65V ~ 1.95V |
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