ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 74

• Manufacturer Part Number: ATxmega256A3U
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3U

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 50
• Ext Interrupts: 50
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 10
• Twi (i2c): 2
• Uart: 7
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 4
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 16
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 7
• Output Compare Channels: 22
• Input Capture Channels: 22
• Pwm Channels: 22
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

35.13 Flash and EEPROM Memory Characteristics
Table 35-13. Endurance and Data Retention
Table 35-14. Programming time
Notes:
35.14 Clock and Oscillator Characteristics
35.14.1
Table 35-15. Calibrated 32.768kHz Internal Oscillator characteristics
8386A–AVR–07/11
Symbol
Symbol
Symbol
1. Programming is timed from the 2MHz internal oscillator.
2. EEPROM is not erased if the EESAVE fuse is programmed.
Calibrated 32.768kHz Internal Oscillator characteristics
Parameter
Flash
EEPROM
Parameter
Chip Erase
Flash
EEPROM
Parameter
Frequency
Factory calibration accuracy
User calibration accuracy
256KB Flash, EEPROM
192KB Flash, EEPROM
128KB Flash, EEPROM
64KB Flash, EEPROM
Page Erase
Page Write
Page WriteAutomatic Page Erase and Write
Page Erase
Page Write
Page WriteAutomatic Page Erase and Write
Write/Erase cycles
Data retention
Write/Erase cycles
Data retention
T = 85°C, V
Condition
CC
Condition
Condition
= 3.0V
(2)
(2)
(2)
(2)
and SRAM Erase
and SRAM Erase
and SRAM Erase
and SRAM Erase
25°C
85°C
25°C
55°C
25°C
85°C
25°C
55°C
Min
-0.5
-0.5
10K
10K
80K
30K
Min
Min
100
100
25
25
32.768
Typ
Typ
105
Typ
90
75
55
12
12
6
6
6
6
XMEGA A3U
(1)
Max
Max
Max
0.5
0.5
Units
Units
Units
Cycle
Cycle
Year
Year
kHz
ms
%
74