ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 216
ATMEGA169
Manufacturer Part Number
ATMEGA169
Description
8-bit Microcontroller with 16K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA169.pdf
(365 pages)
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LCD Usage
LCD Initialization
216
ATmega169/V
The following section describes how to use the LCD.
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 104. LCD usage example.
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
3.0 ± 0.3 V
2b
2c
SEG2
SEG1
SEG0
Connection table
COM0
1b,1c
2c
2f
COM1
2g
2d
2a
COM2
2e
2b
..
2514P–AVR–07/06
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