AT32F421C8T7 – ARM Cortex-M4 Microcontroller

Artari Technologies AT32F421 series of value-added ARM ® Cortex ® -M4 microcontrollers, up to 120MHz CPU operation speed and built-in digital signal processor (DSP), can support up to 64KB flash memory (Flash) and 16KB random access Memory (SRAM), up to 2 USARTs, 2 SPIs (reusable I²S), 2 I²Cs, 1 16-bit advanced timer, 5 16-bit general-purpose timers, and 5-channel DMA control are also integrated on-chip device. At the same time, it also expands a high-speed rail-to-rail input/output analog voltage comparator, a 12-bit 15-channel high-speed ADC with a sampling rate of up to 2M SPS, which can fully meet the requirements of high-speed data acquisition, mixed signal processing and industrial control and motor applications. . Almost all I/O ports can tolerate 5V input signal, and all I/O ports are fast I/O, with a variety of optional functions and support for port remapping, excellent flexibility and ease of use to meet a variety of applications need.

The AT32F421 series is equipped with the sLib security library (Security Library) developed by Arteli, which can support password protection of the specified range of program areas. The solution provider burns the core algorithm to this area and provides it to downstream customers for secondary development, which strengthens the product itself. The security, reliability and ease of use of secondary development. AT32F421 can operate in the industrial temperature range of -40~105°C.

Main features

• Efficiency/Performance
• ARM ® Cortex ® -M4 up to 120MHz
• Has DSP instruction set
• 2.4V ~ 3.6V supply voltage
• I/Os are 5V tolerant
• Temperature range -40 ~ +105°C
• Memory
• Up to 64KB Flash
• 16KB/8KB SRAM
• sLib: Set the specified main storage area as the execution code safe library area (can only be called and cannot be read)
• clock
• PLL (120 MHz output)
• External high-speed 4~25MHz crystal oscillator
• Internal High Speed ​​48 MHz RC Oscillator (-40°C ~ 105°C)
  (1 % accuracy at 25 °C, 2% accuracy at -40 °C ~ 105 °C)
• External low speed 32.768kHz RTC crystal oscillator
• Internal low speed 40kHz RC oscillator
• Reset and Power Management
  • Sleep, Shutdown, and Standby Modes
  • Power-on/power-off reset (POR/LVM)
  • Programmable Voltage Monitor (PVM)
  • Supports five 32-bit backing registers
• Emulate high-performance peripherals
• 1 set of 2M sampling rate 12-bit A/D converter (15 channels)
• 1 comparator

• timer
• One 16-bit 7-channel with advanced timer, 6-channel PWM output, with dead-band control and emergency stop function
• Up to 5 16-bit timers, up to 4 per timer, channels and incremental encoder inputs for input capture/output compare/PWM or pulse count
• 1 16-bit basic timer
• 2 watchdog timers (independent and windowed)
• 1 system time timer: 24-bit auto-decrement
• RTC: Enhanced RTC with alarm clock, sub-second accuracy, and hardware calendar
• Peripheral interface
• 2 x I²C (supports SMBus/PMBus)
• 2 x SPI/I²S
• 2 x USART (support ISO7816, LIN, IrDA interface and modem control)
• Infrared transmitter
• DMA
• 5-channel, supports timer, ADC, I²S, SPI, I²C and USART
• Fast I/O ports
• Up to 39 I/O ports, all of which can be mapped to external interrupts; almost all I/O ports can tolerate 5V input signals
• All I/O ports are fast I/O, register access speed is the highest fᴀʜʙ
• package
• LQFP48 7 x 7 mm
• Resources and technical support Link