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2552KS–AVR–04/11
ATmega329/3290/649/6490
2.3.17
LCDCAP
An external capacitor (typical > 470nF) must be connected to the LCDCAP pin as shown in Fig-
ure 23-2. This capacitor acts as a reservoir for LCD power (V
LCD). A large capacitance reduces
ripple on V
LCD but increases the time until VLCD reaches its target value.
3.
Resources
A comprehensive set of development tools, application notes and datasheets are available for
download on http://www.atmel.com/avr.
Note:
1.
4.
Data Retention
Reliability Qualification results show that the projected data retention failure rate is much less
than 1 PPM over 20 years at 85°C or 100 years at 25°C.
5.
About Code Examples
This documentation contains simple code examples that briefly show how to use various parts of
the device. These code examples assume that the part specific header file is included before
compilation. Be aware that not all C compiler vendors include bit definitions in the header files
and interrupt handling in C is compiler dependent. Please confirm with the C compiler documen-
tation for more details.
For I/O Registers located in extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI”
instructions must be replaced with instructions that allow access to extended I/O. Typically
“LDS” and “STS” combined with “SBRS”, “SBRC”, “SBR”, and “CBR”.
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