ATxmega128D3 Atmel Corporation, ATxmega128D3 Datasheet - Page 209
ATxmega128D3
Manufacturer Part Number
ATxmega128D3
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega128D3
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
5
Twi (i2c)
2
Uart
3
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
200
Analog Comparators
2
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
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
5
Output Compare Channels
18
Input Capture Channels
18
Pwm Channels
18
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega128D3-AU
Manufacturer:
SIMCOM
Quantity:
1 000
Company:
Part Number:
ATxmega128D3-MH
Manufacturer:
XILINX
Quantity:
250
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8210B–AVR–04/10
The following equations can be used to calculate the ratio of the incoming data rate and internal
receiver baud rate.
Table 1.
Table 1.
Table 18-3
tolerated. Normal Speed mode has higher toleration of baud rate variations.
Table 18-3.
Table 18-4.
D
S
S
S
R
R
#(Data + Parity Bit)
#(Data + Parity Bit)
F
M
slow
fast
R
Sum of character size and parity size (D = 5 to 10 bit).
Samples per bit. S = 16 for Normal Speed mode and S = 8 for Double Speed mode.
First sample number used for majority voting. S
Double Speed mode.
Middle sample number used for majority voting. S
for Double Speed mode.
Is the ratio of the slowest incoming data rate that can be accepted in relation to the
receiver baud rate.
Is the ratio of the fastest incoming data rate that can be accepted in relation to the
receiver baud rate.
10
slow
D
D
5
6
7
8
9
5
6
7
and
Recommended Maximum Receiver Baud Rate Error for Normal Speed Mode
(CLK2X = 0)
Recommended Maximum Receiver Baud Rate Error for Double Speed Mode
(CLK2X = 1)
=
Table 18-4 on page 209
------------------------------------------ -
S 1
–
(
D
+
+
D S ⋅
R
R
slow
slow
1
93.20
94.12
94.81
95.36
95.81
96.17
94.12
94.92
95.52
)S
+
(%)
(%)
S
F
R
R
106.67
105.79
105.11
104.58
104.14
103.78
105.66
104.92
104.35
fast
fast
list the maximum receiver baud rate error that can be
(%)
(%)
Max Total Error (%)
Max Total Error (%)
+6.67/-6.80
+5.79/-5.88
+5.11/-5.19
+4.58/-4.54
+4.14/-4.19
+3.78/-3.83
+5.66/-5.88
+4.92/-5.08
+4.35/-4.48
R
fast
F
= 8 for normal speed and S
M
=
= 9 for normal speed and S
-----------------------------------
(
D
(
+
D
1
+
)S
2
)S
+
S
Recommended Max
Recommended Max
Receiver Error (%)
Receiver Error (%)
M
XMEGA D
± 3.0
± 2.5
± 2.0
± 2.0
± 1.5
± 1.5
± 2.5
± 2.0
± 1.5
F
= 4 for
M
= 5
209
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