ATXMEGA32A4-CUR Atmel, ATXMEGA32A4-CUR Datasheet - Page 84
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
Available stocks
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Part Number
Manufacturer
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Price
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7.9
7.9.1
7.9.2
8077H–AVR–12/09
Register Description - Clock
CTRL - System Clock Control Register
PSCTRL - System Clock Prescaler Register
• Bit 7:3 - Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always
write these bits to zero when this register is written.
• Bit 2:0 - SCLKSEL[2:0]: System Clock Selection
SCLKSEL is used to select the source for the System Clock. See
selections. Changing the system clock source will take 2 clock cycles on the old clock source
and 2 clock cycles on the new clock source. These bits are protected by the Configuration
Change Protection mechanism, for details refer to
tion” on page
SCLKSEL cannot be changed if the new source is not stable.
Table 7-1.
• Bit 7 - Reserved
This bit is reserved and will always be read as zero. For compatibility with future devices, always
write this bit to zero when this register is written.
Bit
+0x00
Read/Write
Initial Value
Bit
+0x01
Read/Write
Initial Value
SCLKSEL[2:0]
000
001
010
011
100
101
110
111
12.
R
7
0
System Clock Selection
-
R
7
0
-
R/W
6
0
6
R
0
-
R/W
5
0
Group Configuration
R
5
0
-
RC32MHz
RC32KHz
PSADIV[4:0]
RC2MHz
XOSC
PLL
R/W
4
0
-
-
-
R
4
0
-
Section 3.12 ”Configuration Change Protec-
R/W
3
0
R
3
0
-
Description
External Oscillator or Clock
Phase Locked Loop
Reserved
Reserved
Reserved
2 MHz Internal RC Oscillator
32 MHz Internal RC Oscillator
32 kHz Internal RC Oscillator
R/W
R/W
2
0
2
0
SCLKSEL[2:0]
Table 7-1
R/W
R/W
1
0
1
0
PSBCDIV
XMEGA A
R/W
for the different
R/W
0
0
0
0
PSCTRL
CTRL
84
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