ATxmega64B1 Atmel Corporation, ATxmega64B1 Datasheet - Page 305
ATxmega64B1
Manufacturer Part Number
ATxmega64B1
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64B1
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
53
Ext Interrupts
53
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
3
Twi (i2c)
1
Uart
2
Segment Lcd
160
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
Temp. Sensor
Yes
Crypto Engine
AES/DES
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
3
Output Compare Channels
10
Input Capture Channels
10
Pwm Channels
10
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64B1-AUR
Manufacturer:
ATMEL
Quantity:
210
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24.4.3
Figure 24-5. Driving an LCD With Three Common Terminals
24.4.4
Figure 24-6. Driving an LCD With Four Common Terminals
8291A–AVR–10/11
-1/3 V
-2/3 V
2/3 V
1/3 V
2/3 V
1/3 V
2/3 V
1/3 V
- V
GND
GND
GND
V
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
1/3 Duty and 1/3 Bias
1/4 Duty and 1/3 Bias
Frame
1/3 bias is usually recommended for an LCD with three common terminals (1/3 duty). The wave-
form is shown in
“ON” and SEG0-COM1 is the voltage across a segment that is “OFF”.
1/3 bias is optimal for an LCD displays with four common terminals (1/4 duty). The waveform is
shown in
and SEG0-COM1 is the voltage across a segment that is “OFF”.
Figure 24-6 on page
Frame
Figure 24-5 on page
SEG0
COM0
SEG0-COM0
305. SEG0-COM0 is the voltage across a segment that is ON”
-1/3 V
-2/3 V
305. SEG0-COM0 is the voltage across a segment that is
2/3 V
1/3 V
2/3 V
1/3 V
2/3 V
1/3 V
- V
GND
GND
GND
V
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
Frame
Atmel AVR XMEGA B
Frame
SEG0
COM1
SEG0-COM1
305
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