ATxmega128A1 Atmel Corporation, ATxmega128A1 Datasheet - Page 313

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ATxmega128A1

Manufacturer Part Number
ATxmega128A1
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATxmega128A1

Flash (kbytes)
128 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)
8
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

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25.17.4
25.17.5
25.17.5.1
25.17.5.2
8077H–AVR–12/09
INTFLAGS - ADC Channel Interrupt Flag registers
RESH - ADC Channel n Result register High
12-bit mode, left adjusted
12-bit mode, right adjusted
• Bits 1:0 – INTLVL[1:0]: ADC Interrupt Priority Level and Enable
These bits enable the ADC channel interrupt and select the interrupt level as described in
tion 12. ”Interrupts and Programmable Multi-level Interrupt Controller” on page
interrupt will be triggered when the IF in the INTFLAGS register is set.
• Bits 7:1 – Reserved
These bits are reserved and will always read as zero. For compatibility with future devices,
always write these bits to zero when this register is written.
• Bit 0 – IF: ADC Channel Interrupt Flag
The interrupt flag is set when the ADC conversion is complete. If the channel is configured for
compare mode, the flag will be set if the compare condition is met. IF is automatically cleared
when the ADC channel interrupt vector is executed. The bit can also be cleared by writing a one
to the bit location.
For all result registers and with any ADC result resolution, a signed number is represented in 2’s
complement form and the MSB represents the sign bit.
The RESL and RESH register pair represents the 16-bit value ADCRESULT. Reading and writ-
ing 16-bit values require special attention, refer to
page 12
• Bits 7:0 - RES[11:4]: ADC Channel Result, high byte
These are the 8 MSB of the 12-bit ADC result.
• Bits 7:4 - Reserved
These bits will in practice be the extension of the sign bit CHRES11 when ADC works in differen-
tial mode and set to zero when ADC works in signed mode.
• Bits 3:0 - RES[11:8]: ADC Channel Result, high byte
These are the 4 MSB of the 12-bit ADC result.
Bit
+0x03
Read/Write
Initial Value
12-bit, left.
12-bit, right
8-bit
for details.
Bit
+0x05
Read/Write
Initial Value
R
7
0
-
R
6
0
-
R
7
0
-
-
R
0
5
-
R
6
0
-
-
R
4
0
-
R
5
0
-
-
Section 3.11 ”Accessing 16-bits Registers” on
R
3
0
-
R
4
0
-
-
RES[11:4]
R
2
0
-
R
3
0
-
R
1
0
R
-
2
0
-
RES[11:8]
XMEGA A
123. The enabled
R/W
IF
0
0
R
1
0
-
INTFLAGS
R
0
0
-
Sec-
313

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