The AT32F457 series are based on the high-performance ARM® Cortex®-M4F 32-bit RISC core operating at a frequency of up to 192 MHz. The Cortex®-M4F core features a Floating Point Unit (FPU) single precision supporting all ARM® single-precision data processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) that enhances application security.
The AT32F457 series incorporate high-speed embedded memories, including up to 512 Kbytes of Flash memory, 128+16 Kbytes of SRAM, and 26 Kbytes of boot memory that can be used as a Bootloader or as a general instruction/data memory (one-time-configurable) to achieve the maximum of 512+26 Kbytes, as well as 4 Kbytes of OTP data storage space. Any block of the embedded Flash memory can be protected by the ¡°sLib¡± (security library), functioning as a security area with code-executable only. In addition, the AT32F457 device includes high-level memory extensions: one external memory controller (XMC) (including SDRAM interface) and one quad SPI memory interface (QSPI).
The AT32F457 series offer two 12-bit ADCs, two 12-bit DACs, ten general-purpose 16-bit timers (including two motor control PWM advanced timers), two general-purpose 32-bit timers, two basic timers, one low-power ERTC, one AES hardware accelerator, and one true random number generator (TRNG). They feature standard and advanced communication interfaces: up to three I2Cs, four SPIs (multiplexed as I2S), one full-duplex I2SF interface, one SDIO, eight USARTs, three CANFD interfaces, one infrared transmitter, one OTGFS and one Ethernet MAC interface.
The AT32F457 series operate in the -40 ¡ãC to +105 ¡ãC temperature range, from a 2.4 to 3.6 V power supply. A comprehensive set of power-saving mode allows the design of low-power application.
The AT32F457 offer devices in different package types. They are fully pin-to-pin, software and functionally compatible throughout the AT32F457 series, except the configurations of peripherals which are not fully identical depending on the package types.
¡¤ Core: ARM® 32-bit Cortex®-M4F CPU with FPU
- 192 MHz maximum frequency, with a memory protection unit (MPU), single-cycle multiplication and hardware division
- Floating point unit (FPU)
- DSP instructions
¡¤ Memories
- 256 to 512 Kbytes of Flash memory
- 26 Kbytes of boot memory used as a Bootloader or as a general instruction/data memory (one-time-configurable)
- 4 Kbytes of OTP memory
- sLib: configurable part of main Flash as a library area with code executable but secured, non-readable
- 144 to 108 Kbytes of SRAM (configurable as 128 to 96 KB SRAM with party check)
- External memory controller (XMC) with 16-bit data bus supporting SRAM, PSRAM, NOR and SDRAM memories
- QSPI interface for external SPI Flash or SPI RAM extension, supporting address mapping
¡¤ XMC as LCD parallel interface, 8080/6800 modes
¡¤ Power control (PWC)
- 2.4 to 3.6 V supply
- Power-on reset (POR), low voltage reset (LVR), and power voltage monitoring (PVM)
- Low power modes: Sleep, Deepsleep and Standby modes (woke up via 6 WKUP pins)
- VBAT supply for LEXT, ERTC and 20x 32-bit battery powered registers (BPR)
¡¤ Clock and reset management (CRM)
- 4 to 25 MHz crystal oscillator (HEXT)
- 48 MHz internal factory-trimmed high speed clock (HICK) with ¡À1% accuracy at TA=25 ¡ãC and ¡À2.5% at TA= -40 ¡ãC to +105 ¡ãC, with automatic clock calibration (ACC)
- 32 kHz crystal oscillator (LEXT)
- Low speed internal clock (LICK)
¡¤ Analog
- 2 x 12-bit 5.33 MSPS A/D converters, up to 16 external input channels; 12/10/8/6-bit resolution, hardware oversampling up to equivalent 16-bit resolution
- Temperature sensor (VTS), internal reference voltage (VINTRV), VBAT monitor (VBAT/4)
- 2 x 12-bit D/A converters
¡¤ DMA
- 2 x 7-channel DMA controllers for flexible mapping
¡¤ Up to 117 fast GPIOs
- All mappable on 16 external interrupts (EXINT)
- Almost all 5 V-tolerant
¡¤ Up to 17 timers (TMR)
- 2x 16-bit 8-channel advanced timers, including PWM outputs with dead-time generator and emergency brake
- Up to 8x 16-bit + 2x 32-bit general-purpose timers, each with up to 4 IC/OC/PWM or pulse counter and incremental encoder input
- 2x 16-bit basic timers
- 2x watchdog timers (general WDT and windowed WWDT)
- SysTick timer: a 24-bit downcounter
¡¤ ERTC: enhanced RTC with auto-wakeup, alarm, subsecond accuracy, and hardware calendar with calibration feature
¡¤ Up to 23 communication interfaces
- Up to 3x I2C interfaces (SMBus/PMBus)
- Up to 8x USART interfaces support master synchronization SPI and modem control, ISO7816 interface, LIN, IrDA, and RS485 driver enable, supporting TX/RX swap
- Up to 4x SPI interfaces (40 Mbit/s), all with multiplexed half-duplex I2S, and I2S2/I2S3 full-duplex mode
- 1x separated full-duplex I2S interface (I2SF)
- Up to 3x CAN interfaces, each with dedicated 1408 bytes of buffer, and support CAN FD protocol
- SDIO interface
- OTGFS full-speed controller with on-chip PHY, dedicated 1280 bytes of buffer, supporting crystal-less in device mode
- 10/100M Ethernet MAC (EMAC) with dedicated DMA and 4 Kbytes of buffer, IEEE 1588 hardware support, MII/RMII available
- Infrared transmitter (IRTMR)
¡¤ CRC calculation unit
¡¤ 96-bit unique ID (UID)
¡¤ AES hardware accelerator supporting 256/192/128-bit key
¡¤ True random number generator (TRNG)
¡¤ Debug mode
- Serial wire debug (SWD) and serial wire output (SWO)
¡¤ Operating temperature: -40 to +105 ¡ãC
¡¤ Packages
- LQFP144 20 x 20 mm
- LQFP100 14 x 14 mm
- LQFP64 10 x 10 mm