ATXMEGA16D4-AU Atmel, ATXMEGA16D4-AU Datasheet - Page 8

• Manufacturer Part Number: ATXMEGA16D4-AU
• Description: MCU AVR 16KB FLASH 44TQFP
• Manufacturer: Atmel
• Series: AVR® XMEGAr

Specifications of ATXMEGA16D4-AU

• Core Processor: AVR
• Core Size: 8/16-Bit
• Speed: 32MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 3.6 V
• Data Converters: A/D 12x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Processor Series: ATXMEGA16x
• Core: AVR8
• Data Bus Width: 8 bit
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6. AVR CPU
6.1
6.2
8135J–AVR–12/10
Features
Overview
•
•
•
•
•
•
•
•
The XMEGA D4 uses the 8/16-bit AVR CPU. The main function of the CPU is program execu-
tion. The CPU must therefore be able to access memories, perform calculations and control
peripherals. Interrupt handling is described in a separate section.
the CPU block diagram.
Figure 6-1.
The AVR uses a Harvard architecture - with separate memories and buses for program and
data. Instructions in the program memory are executed with a single level pipeline. While one
instruction is being executed, the next instruction is pre-fetched from the program memory.
8/16-bit high performance AVR RISC Architecture
32x8-bit registers directly connected to the ALU
Stack in RAM
Stack Pointer accessible in I/O memory space
Direct addressing of up to 16M Bytes of program and data memory
True 16/24-bit access to 16/24-bit I/O registers
Support for for both 8-, 16- and 32-bit Arithmetic
Configuration Change Protection of system critical features
– 138 instructions
– Hardware multiplier
Peripheral
Module 1
CPU block diagram
CONTROL
STATUS/
Program
Counter
OCD
Peripheral
Module 2
Instruction
Instruction
Program
Register
Memory
Decode
Flash
DATA BUS
SRAM
DATA BUS
ALU
EEPROM
32 x 8 General
Registers
Multiplier
Purpose
Figure 6-1 on page 8
PMIC
XMEGA D4
shows
8