ATxmega128A3 Atmel Corporation, ATxmega128A3 Datasheet - Page 14

• Manufacturer Part Number: ATxmega128A3
• Manufacturer: Atmel Corporation

Specifications of ATxmega128A3

• Flash (kbytes): 128 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 Speed: No
• Usb Interface: No
• 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): 8
• Eeprom (bytes): 2048
• 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

7.7
8068T–AVR–12/10
ATxmega64A3
ATxmega128A3
ATxmega192A3
ATxmega256A3
ATxmega64A3
ATxmega128A3
ATxmega192A3
ATxmega256A3
Devices
Devices
Flash and EEPROM Page Size
128 KB + 8 KB
192 KB + 8 KB
256 KB + 8 KB
64 KB + 4 KB
Flash
Size
EEPROM
The Flash Program Memory and EEPROM data memory are organized in pages. The pages are
word accessible for the Flash and byte accessible for the EEPROM.
Table 7-2 on page 14
operations are performed on one page at a time, while reading the Flash is done one byte at a
time. For Flash access the Z-pointer (Z[m:n]) is used for addressing. The most significant bits in
the address (FPAGE) gives the page number and the least significant address bits (FWORD)
gives the word in the page.
Table 7-2.
Table 7-3 on page 14
EEEPROM write and erase operations can be performed one page or one byte at a time, while
reading the EEPROM is done one byte at a time. For EEPROM access the NVM Address Regis-
ter (ADDR[m:n]) is used for addressing. The most significant bits in the address (E2PAGE) gives
the page number and the least significant address bits (E2BYTE) gives the byte in the page.
Table 7-3.
Size
2 KB
2 KB
2 KB
4 KB
Page Size
(words)
128
256
256
256
Number of words and Pages in the Flash.
Number of bytes and Pages in the EEPROM.
Page Size
FWORD
(Bytes)
Z[7:1]
Z[8:1]
Z[8:1]
Z[8:1]
shows the Flash Program Memory organization. Flash write and erase
32
32
32
32
shows EEPROM memory organization for the XMEGA A3 devices.
FPAGE
Z[16:8]
Z[17:9]
Z[18:9]
Z[18:9]
ADDR[4:0]
ADDR[4:0]
ADDR[4:0]
ADDR[4:0]
E2BYTE
128K
192K
256K
Size
64K
Application
No of Pages
ADDR[10:5]
ADDR[10:5]
ADDR[10:5]
ADDR[11:5]
E2PAGE
256
256
384
512
Size
4 KB
8 KB
8 KB
8 KB
XMEGA A3
No of Pages
Boot
No of Pages
128
64
64
64
16
16
16
16
14