AT32F421K8U7

Technical Specifications

Product Introduction

Features

• Core: ARM 32-bit Cortex-M4 CPU，120 MHz maximum frequency, with a memory protection unit (MPU), single-cycle multiplication and hardware division, DSP instructions
• 16 to 64 KB of internal Flash memory
• 4 Kbytes of boot memory used as a Bootloader
• sLib: configurable part of main Flash set as a library area with code executable but secured, non-readable
• 8 to 16 Kbytes of SRAM
• 2.4 to 3.6V power supply
• Power-on reset (POR), low voltage reset (LVR) and power voltage monitoring (PVM)
• Low power modes: Sleep, Deepsleep and Standby modes; four WKUP pins used for wakeup from Standby mode
• Supports 5 x 32-bit battery powered registers (BPR)
• 4 to 25 MHz crystal oscillator (HEXT)
• Internal 48 MHz factory-trimmed HICK (±1% at TA=25°C, ±2% at TA=-40°C to +105°C)
• PLL flexible 31 to 500 multiplication and 1 to 15 division factor
• 32 kHz crystal (LEXT)
• Low speed internal clock (LICK)
• 1 x 12-bit 2 MSPS A/D converter, up to 15 input channels
• Temperature sensor (VTES) and internal reference voltage (VINTRV)
• 1 x CMP with 5 external input channels
• 1 x 5-channel DMA controller
• All mappable on 16 external interrupts (EXINT)
• Almost all 5 V-tolerant
• 1 x 16-bit 7-channel advanced timer, including 3 channels for complementary PWM output, with dead-time generator and emergency brake
• Up to 5 x 16-bit timers, each with 4 IC/OC /PWM or pulse counter and quadrature (incremental) encoder input
• 1 x 16-bit basic timer
• 2 x watchdog timers (general WDT and windowed WWDT)
• SysTick timer: a 24-bit downcounter
• ERTC: enhanced RTC, with alarm, subsecond accuracy, hardware calendar and calibration
• 2 x I²C interfaces (SMBus/PMBus)
• 2 x USARTs supporting master synchronous SPI and modem control, with ISO7816 interface, LIN, IrDA capability and swappable TX/RX
• 2 x SPIs (36 Mbit/s), all with multiplexed half-duplex I²S
• 96-bit unique ID (UID)
• Serial wire debug (SwD) interface
• Operating temperature: -40 to +105°C
• Packages: LQFP48 7 x 7 mm, LQFP32 7 x 7 mm, QFN32 5 x 5 mm, QFN32 4 x 4 mm, QFN28 4 x 4 mm, TSSOP20 6.5 x 4.4 mm

Datasheet

Compliance & Export Codes