ATMEGA169L-8MI Atmel, ATMEGA169L-8MI Datasheet - Page 216

• Manufacturer Part Number: ATMEGA169L-8MI
• Description: IC MCU AVR 16K LV 8MHZ IND 64QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA169L-8MI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 53
• 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-MLF®, 64-QFN
• For Use With: ATAVRISP2 - PROGRAMMER AVR IN SYSTEMATAVRBFLY - KIT EVALUATION AVR BUTTERFLYATSTK502 - MOD EXPANSION AVR STARTER 500
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: ATMEGA169L-4MI; ATMEGA169L-4MI

LCD Usage
LCD Initialization
216
ATmega169V/L
Prior to enabling the LCD some initialization must be preformed. The initialization pro-
cess normally consists of setting the frame rate, duty, bias and port mask. LCD contrast
is set initially, but can also be adjusted during operation.
Consider the following LCD as an example:
Figure 103.
Display:
Number of common terminals:
Number of segment terminals:
Bias system:
Drive system:
Operating voltage:
ATmega169
51
1b
1c
50
COM3
SEG0
SEG1
SEG2
49
2e
2f
48
47
46
45
LCD
2a
2g
2d
TN Positive, Reflective
3
21
1/3 Bias
1/3 Duty
3.3 ± 0.9 V
2b
2c
SEG2
SEG1
SEG0
Connection table
COM0
1b,1c
2c
2f
COM1
2g
2d
2a
COM2
2e
2b
..
2514H–AVR–05/03