ATMEGA32A – AU: 32KB Flash Memory 8 – bit AVR Microcontroller

Manufacturer: Microchip
Product Category: 8 – bit Microcontroller
Series: ATmega32A
Core: AVR
Memory Characteristics
Program Memory: 32KB of in – system programmable Flash memory, with a write/erase cycle of 10,000 times. It supports true Read – While – Write operation and has an optional Boot code area with independent lock bits.
Data Memory: 2KB of SRAM for fast data access during program execution, and 1KB of EEPROM with a write/erase cycle of 100,000 times, suitable for storing data that needs to be retained after power – off.
Performance Parameters
Operating Frequency: The maximum operating frequency is 16MHz, and it can achieve a throughput of up to 16 MIPS at 16MHz.
Instruction Set: Based on the advanced AVR RISC architecture, it has 131 powerful instructions, and most instructions are executed in a single clock cycle.
Working Registers: It is equipped with 32 8 – bit general – purpose working registers, which are directly connected to the arithmetic logic unit (ALU), allowing two independent registers to be accessed in one instruction executed in one clock cycle.
Peripheral Devices
ADC: It has an 8 – channel 10 – bit A/D converter, including 8 single – ended channels, 7 differential channels in the TQFP package, and 2 differential channels with programmable gain (1x, 10x, or 200x).
Timers: There are two 8 – bit timer/counters with independent prescalers and comparator functions, one 16 – bit timer/counter with a prescaler, comparator function, and capture function, and a real – time counter (RTC) with an independent oscillator.
Communication Interfaces: It supports communication interfaces such as I²C, SPI, and UART/USART, facilitating data exchange with other devices.
PWM: It has four – channel PWM with 8 – bit and 16 – bit resolution.
Other Peripherals: It also has a byte – oriented two – wire interface, a programmable watchdog timer with an independent on – chip oscillator, and an on – chip analog comparator.
Electrical Characteristics
Power Supply Voltage: The operating voltage range is 2.7V to 5.5V.
Operating Temperature Range: The minimum operating temperature is – 40 °C, and the maximum operating temperature is 85 °C.
Package Information
Package Type: TQFP – 44, with a size of 10.1 x 10.1 x 1.05mm, and a surface – mount installation method.
Special Features
It has a JTAG interface (compatible with the IEEE 1149.1 standard), which supports boundary – scan functions and extended on – chip debugging functions. It can also program Flash, EEPROM, fuse bits, and lock bits through the JTAG interface. In addition, it has power – on reset, programmable brown – out detection, an on – chip calibrated RC oscillator, and six sleep modes.