ATxmega64A1 Atmel Corporation, ATxmega64A1 Datasheet - Page 14
ATxmega64A1
Manufacturer Part Number
ATxmega64A1
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64A1
Flash (kbytes)
64 Kbytes
Pin Count
100
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
78
Ext Interrupts
78
Usb Speed
No
Usb Interface
No
Spi
12
Twi (i2c)
4
Uart
8
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
4
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
4
Eeprom (bytes)
2048
Self Program Memory
YES
External Bus Interface
1
Dram Memory
sdram
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
8
Output Compare Channels
24
Input Capture Channels
24
Pwm Channels
24
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64A1-AU
Manufacturer:
Atmel
Quantity:
135
Company:
Part Number:
ATxmega64A1U-AU
Manufacturer:
ATMEL
Quantity:
953
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3.14.3
3.14.4
3.14.5
8077H–AVR–12/09
RAMPX - Extended X-Pointer Register
RAMPY - Extended Y-Pointer Register
RAMPZ - Extended Z-Pointer Register
data addresses below 64K bytes, this register is not in use. This register is not available if the
data memory including external memory is less than 64K bytes.
• Bit 7:0 – RAMPD[7:0]: Extended Direct Addressing bits
These bits holds the 8 MSB of the 24-bit address created by RAMPD and the 16-bit operand.
Only the number of bits required to address the available data memory is implemented for each
device. Unused bits will always read as zero.
This register is concatenated with the X-register for indirect addressing (LD/LDD/ST/STD) of the
whole data memory space on devices with more than 64K bytes of data memory. When access-
ing data addresses below 64K bytes, this register is not in use. This register is not available if the
data memory including external memory is less than 64K bytes.
• Bit 7:0 – RAMPX[7:0]: Extended X-pointer Address bits
These bits holds the 8 MSB of the 24-bit address created by RAMPX and the 16-bit X-register.
Only the number of bits required to address the available data memory is implemented for each
device. Unused bits will always read as zero.
This register is concatenated with the Y-register for indirect addressing (LD/LDD/ST/STD) of the
whole data memory space on devices with more than 64K bytes of data memory. When access-
ing data addresses below 64K bytes, this register is not in use. This register is not available if the
data memory including external memory is less than 64K bytes.
• Bit 7:0 – RAMPY[7:0]: Extended Y-pointer Address bits
These bits hold the 8 MSB of the 24-bit address created by RAMPY and the 16-bit Y-register.
Only the number of bits required to address the available data memory is implemented for each
device. Unused bits will always read as zero.
This register is concatenated with the Z-register for indirect addressing (LD/LDD/ST/STD) of the
whole data memory space on devices with more than 64K bytes of data memory. RAMPZ is
concatenated with the Z-register when reading (ELPM) program memory locations above the
Bit
+0x0A
Read/Write
Initial Value
Bit
+0x09
Read/Write
Initial Value
Bit
+0x08
Read/Write
Initial Value
R/W
R/W
R/W
7
0
7
0
7
0
R/W
R/W
R/W
6
0
6
0
6
0
R/W
R/W
R/W
5
0
5
0
5
0
R/W
R/W
R/W
4
0
4
0
4
0
RAMPD[7:0]
RAMPX[7:0]
RAMPY[7:0]
R/W
R/W
R/W
3
0
3
0
3
0
R/W
R/W
R/W
2
0
2
0
2
0
R/W
R/W
R/W
1
0
1
0
1
0
XMEGA A
R/W
R/W
R/W
0
0
0
0
0
0
RAMPD
RAMPX
RAMPY
14
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