ATmega3290P datasheet(233/385 Pages) ATMEL

Part #	ATmega3290P

Description	8-bit Microcontroller with 32K Bytes In-System Programmable Flash

PDF	385 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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233 / 385 page

233

8021E–AVR–07/09

ATmega329P/3290P

(TOSC1) pin instead of a 32 kHz crystal. See ”Asynchronous Operation of Timer/Counter2” on

page 149 for further details.

Before entering Power-down mode, Standby mode or ADC Noise Reduction mode with synchro-

nous LCD clock selected, the user have to disable the LCD. Refer to ”Disabling the LCD” on

page 236.

22.3.7

Display Blanking

When LCDBL is written to one, the LCD is blanked after completing the current frame. All seg-

ments and common pins are connected to GND, discharging the LCD. Display memory is

preserved. Display blanking should be used before disabling the LCD to avoid DC voltage

across segments, and a slowly fading image.

22.3.8

Port Mask

For LCD with less than 25/40 segment terminals, it is possible to mask some of the unused pins

and use them as ordinary port pins instead. Refer to Table 22-3 for details. Unused common

pins are automatically configured as port pins.

ATmega3290P Datasheet(PDF) 233 Page - ATMEL Corporation