ATxmega64A4U Atmel Corporation, ATxmega64A4U Datasheet - Page 424
ATxmega64A4U
Manufacturer Part Number
ATxmega64A4U
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64A4U
Flash (kbytes)
64 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
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)
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
5
Output Compare Channels
16
Input Capture Channels
16
Pwm Channels
16
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64A4U-AU
Manufacturer:
ON
Quantity:
29 000
Company:
Part Number:
ATxmega64A4U-U
Manufacturer:
ATMEL
Quantity:
74
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32.7
32.7.1
32.7.2
32.7.3
8331A–AVR–07/11
Register Description – PDI Control and Status Registers
STATUS
RESET
CTRL
–
–
Program and Debug Interface Control Register
–
Program and Debug Interface Reset Register
Program and Debug Interface Status Register
The PDIcontrol and status registers are accessible in the PDI control and status register space
(CSRS) using the LDCS and STCS instructions. The CSRS contains registers directly involved
in configuration and status monitoring of the PDI itself.
• Bit 7:2
These bits are reserved and will always be read as zero. For compatibility with future devices,
always write these bits to zero when this register is written.
• Bit 1
This status bit is set when the key signalling enables the NVM programming interface. The exter-
nal programmer can poll this bit to verify successful enabling. Writing the NVMEN bit disables
the NVM interface.
• Bit 0
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 7:0
When the reset signature, 0x59, is written to RESET, the device is forced into reset. The device
is kept in reset until RESET is written with a data value different from the reset signature. Read-
ing the lsb will return the status of the reset. The seven msbs will always return the value 0x00,
regardless of whether the device is in reset or not.
• Bit 7:3
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
+0x01
Read/Write
Initial Value
Bit
+0x00
Read/Write
Initial Value
Bit
+0x02
Read/Write
Initial Value
–
–
–
–
–
NVMEN: Nonvolatile Memory Enable
Reserved Bit
Reserved
RESET[7:0]: Reset Signature
Reserved
R/W
R
R
7
–
0
7
0
7
–
0
R/W
R
R
6
–
0
6
0
6
–
0
R/W
R
R
5
–
0
5
0
5
–
0
R/W
R
R
4
–
0
4
0
4
–
0
RESET[7:0]
Atmel AVR XMEGA AU
R/W
R
R
3
–
0
3
0
3
–
0
R/W
R/W
R
2
–
0
2
0
2
0
GUARDTIME[2:0]
NVMEN
R/W
R/W
R/W
1
0
1
0
1
0
R/W
R/W
R
0
–
0
0
0
0
0
STATUS
RESET
CTRL
424
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