ATxmega32A4 Atmel Corporation, ATxmega32A4 Datasheet - Page 14

• Manufacturer Part Number: ATxmega32A4
• Manufacturer: Atmel Corporation

Specifications of ATxmega32A4

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Speed: No
• Usb Interface: No
• Spi: 7
• Twi (i2c): 2
• Uart: 5
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 2
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 4
• Eeprom (bytes): 1024
• 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: 5
• Output Compare Channels: 16
• Input Capture Channels: 16
• Pwm Channels: 16
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

7.7
8069Q–AVR–12/10
ATxmega16A4
ATxmega32A4
ATxmega64A4
ATxmega128A4
ATxmega16A4
ATxmega32A4
ATxmega64A4
ATxmega128A4
Devices
Devices
Flash and EEPROM Page Size
128 KB + 8 KB
16 KB + 4 KB
32 KB + 4 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) give the page number and the least significant address bits (FWORD)
give the word in the page.
Table 7-2.
Table 7-3 on page 14
EEPROM 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) give
the page number and the least significant address bits (E2BYTE) give the byte in the page.
Table 7-3.
Size
1 KB
1 KB
2 KB
2 KB
Page Size
(words)
128
128
128
256
Number of words and Pages in the Flash.
Number of Bytes and Pages in the EEPROM.
Page Size
FWORD
(Bytes)
Z[6:0]
Z[6:0]
Z[6:0]
Z[7:0]
shows the Flash Program Memory organization. Flash write and erase
32
32
32
32
shows EEPROM memory organization for the XMEGA A4 devices.
FPAGE
Z[13:7]
Z[14:7]
Z[15:7]
Z[16:8]
ADDR[4:0]
ADDR[4:0]
ADDR[4:0]
ADDR[4:0]
E2BYTE
128 KB
16 KB
32 KB
64 KB
Size
Application
No of Pages
ADDR[10:5]
ADDR[10:5]
ADDR[10:5]
ADDR[10:5]
E2PAGE
128
128
256
64
4 KB
8 KB
Size
4 KB
4 KB
XMEGA A4
No of Pages
Boot
No of Pages
32
32
64
64
16
16
16
16
14