ATXMEGA32A4-CUR Atmel, ATXMEGA32A4-CUR Datasheet - Page 197
ATXMEGA32A4-CUR
Manufacturer Part Number
ATXMEGA32A4-CUR
Description
MCU AVR 32+4 FLASH 49VFBGA
Manufacturer
Atmel
Series
AVR® XMEGAr
Specifications of ATXMEGA32A4-CUR
Core Processor
AVR
Core Size
8/16-Bit
Speed
32MHz
Connectivity
I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
34
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.6 V ~ 3.6 V
Data Converters
A/D 12x12b, D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
49-VFBGA
For Use With
ATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMRATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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Price
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18. RTC32 - 32-bit Real Time Counter
18.1
18.2
Features
Overview
•
•
•
•
•
•
•
The 32-bit Real Time Counter is a 32-bit counter, counting reference clock cycles and giving an
event and/or an interrupt request when it reaches a configurable compare and/or top value. The
reference clock is generated from a high accuracy 32.768 kHz crystal, and the design is opti-
mized for low power consumption. The Real Time Counter (RTC) typically operates in low power
sleep modes, keeping track of time and waking up the device at regular intervals.
The RTC input clock can be taken from a 1.024 kHz or 1 Hz prescaled output from the 32.768
kHz reference clock. The RTC will give a compare interrupt request and/or event when the coun-
ter value equals the Compare register value. The RTC will give an overflow interrupt request
and/or event when the counter value equals the Period register value. Counter overflow will also
reset the counter value to zero.
The RTC can generate both compare and overflow interrupt request and/or events.
Figure 18-1. 32-bit Real Time Counter Overview
32-bit resolution
Selectable clock reference
One Compare register
One Period register
Clear Timer on overflow
Optional Interrupt/ Event on overflow and compare match
Isolated V
– 1.024 kHz
– 1 Hz
BAT
power domain with dynamic switch over from/to V
1.024 kHz
1 Hz
32-bit Compare
32-bit Counter
=
=
32-bit Period
Overflow
Compare Match
CC
power domain
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