ATXMEGA192D3-AU Atmel, ATXMEGA192D3-AU Datasheet - Page 24

MCU AVR 192K FLASH 64TQFP

ATXMEGA192D3-AU

Manufacturer Part Number
ATXMEGA192D3-AU
Description
MCU AVR 192K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® XMEGAr
Datasheets

Specifications of ATXMEGA192D3-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
50
Program Memory Size
192KB (96K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.6 V ~ 3.6 V
Data Converters
A/D 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Controller Family/series
ATXMEGA
No. Of I/o's
50
Eeprom Memory Size
2KB
Ram Memory Size
16KB
Cpu Speed
32MHz
Rohs Compliant
Yes
Processor Series
XMEGA
Core
AVR
Data Bus Width
8 bit, 16 bit
Data Ram Size
16 KB
Interface Type
SPI, TWI, USART
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
50
Number Of Timers
5
Operating Supply Voltage
2.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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12.3.6
13. WDT - Watchdog Timer
13.1
13.2
8068T–AVR–12/10
Features
Overview
Software reset
The MCU can be reset by the CPU writing to a special I/O register through a timed sequence.
The XMEGA A3 has a Watchdog Timer (WDT). The WDT will run continuously when turned on
and if the Watchdog Timer is not reset within a software configurable time-out period, the micro-
controller will be reset. The Watchdog Reset (WDR) instruction must be run by software to reset
the WDT, and prevent microcontroller reset.
The WDT has a Window mode. In this mode the WDR instruction must be run within a specified
period called a window. Application software can set the minimum and maximum limits for this
window. If the WDR instruction is not executed inside the window limits, the microcontroller will
be reset.
A protection mechanism using a timed write sequence is implemented in order to prevent
unwanted enabling, disabling or change of WDT settings.
For maximum safety, the WDT also has an Always-on mode. This mode is enabled by program-
ming a fuse. In Always-on mode, application software can not disable the WDT.
11 selectable timeout periods, from 8 ms to 8s.
Two operation modes
Runs from the 1 kHz output of the 32 kHz Ultra Low Power oscillator
Configuration lock to prevent unwanted changes
– Standard mode
– Window mode
XMEGA A3
24

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