ATMEGA32A-MNR Atmel, ATMEGA32A-MNR Datasheet - Page 3

• Manufacturer Part Number: ATMEGA32A-MNR
• Description: IC MCU AVR 32K 16MHZ 44VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32A-MNR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2. Overview
2.1
8155C–AVR–02/11
Block Diagram
The Atmel
enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the
ATmega32A achieves throughputs approaching 1 MIPS per MHz allowing the system designer
to optimize power consumption versus processing speed.
Figure 2-1.
VCC
GND
®
AVCC
AREF
AVR
Block Diagram
®
ATmega32A is a low-power CMOS 8-bit microcontroller based on the AVR
INSTRUCTION
INSTRUCTION
AVR CPU
PROGRAMMING
CONTROL
PROGRAM
PROGRAM
REGISTER
COUNTER
DECODER
FLASH
LINES
PORTA DIGITAL INTERFACE
MUX &
PORTB DIGITAL INTERFACE
PORTA DRIVERS/BUFFERS
PORTB DRIVERS/BUFFERS
LOGIC
ADC
+
-
PA0 - PA7
PB0 - PB7
INTERFACE
REGISTERS
INTERFACE
GENERAL
PURPOSE
REGISTER
POINTER
STATUS
STACK
COMP.
SRAM
ALU
ADC
SPI
X
Y
Z
OSCILLATOR
WATCHDOG
COUNTERS
INTERRUPT
MCU CTRL.
INTERNAL
& TIMING
EEPROM
TIMERS/
USART
PORTC DIGITAL INTERFACE
TIMER
PORTD DIGITAL INTERFACE
PORTC DRIVERS/BUFFERS
PORTD DRIVERS/BUFFERS
UNIT
TWI
PC0 - PC7
PD0 - PD7
OSCILLATOR
OSCILLATOR
CALIBRATED
OSCILLATOR
INTERNAL
ATmega32A
XTAL1
XTAL2
RESET
3