ATMEGA169-16AU Atmel, ATMEGA169-16AU Datasheet - Page 213
![IC AVR MCU 16K 16MHZ 5V 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA169-16AU
Manufacturer Part Number
ATMEGA169-16AU
Description
IC AVR MCU 16K 16MHZ 5V 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA169-16AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
For Use With
ATAVRBFLY - KIT EVALUATION AVR BUTTERFLYATSTK502 - MOD EXPANSION AVR STARTER 500
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
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Price
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1/2 Duty and 1/2 Bias
2514P–AVR–07/06
Figure 99. Driving a LCD with One Common Terminal
For LCD with two common terminals (1/2 duty) a more complex waveform must be used
to individually control segments. Although 1/3 bias can be selected 1/2 bias is most
common for these displays. Waveform is shown in Figure 100. SEG0 - COM0 is the volt-
age across a segment that is on, and SEG0 - COM1 is the voltage across a segment
that is off.
Figure 100. Driving a LCD with Two Common Terminals
-1
1
1
V
GND
V
GND
V
GND
-V
/
/
/
LCD
LCD
LCD
2
2
2
-V
LCD
V
GND
V
V
GND
V
V
GND
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
Frame
Frame
Frame
Frame
SEG0
COM0
SEG0 - COM0
SEG0
COM0
SEG0 - COM0
-1
1
1
V
GND
V
GND
GND
/
/
/
2
2
2
-V
LCD
LCD
V
V
V
V
V
V
GND
GND
GND
LCD
LCD
LCD
LCD
LCD
LCD
LCD
Frame
Frame
ATmega169/V
Frame
Frame
SEG1
COM0
SEG1 - COM0
SEG0
COM1
SEG0 - COM1
213
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