The AT32F490 series is based on the ARM® Cortex®-M4 32-bit core, operating at a frequency of up to 216 MHz. This device features a single-precision floating-point unit (FPU), a digital signal processor (DSP), up to 256 KB of Flash memory, and 96+6 KB of SRAM (with parity check), as well as 2 MB of PSRAM. It also embeds 20 KB of system memory with two functions: one serving as a bootloader, and the other configurable as user instruction and data memory for achieving a maximum of 256 + 20 KB.
In addition, the device offers 1x USB OTG controller (supporting Xtal-less operation in device mode), 1x QSPI, 1x CAN, 8x UARTs, 3x SPIs/I²Ss, 1x separate full-duplex I²S, 3x I²Cs, 1x 16-bit advanced timer, 7x 16-bit general-purpose timers, 1x 32-bit general-purpose timer, 2x 16-bit basic timers, and 1x 12-bit 16-channel high-speed 2 Msps ADC. All I/Os have fast toggling capability, and almost all of them are 5V tolerant, allowing them to be used for various purposes such as port remapping. The device operates in a temperature range of -40 to 105°C. The AT32F490 series is suited for commercial applications such as microprinters, LED control cards, industrial automation, IoT, and consumer electronics.
