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ATMEGA640 датащи(PDF) 91 Page - Microchip Technology

номер детали ATMEGA640
подробное описание детали  8-bit Microcontroller with 16/32/64KB In-System Programmable Flash
PDF  436 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

ATMEGA640 датащи(HTML) 91 Page - Microchip Technology

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ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
DS40002211A
• RXD3/PCINT9 - Port J, Bit 0
RXD3, USART3 Receive pin. Receive Data (Data input pin for the USART3). When the USART3 Receiver is
enabled, this pin is configured as an input regardless of the value of DDJ0. When the USART3 forces this pin to be
an input, a logical one in PORTJ0 will turn on the internal pull-up.
PCINT9, Pin Change Interrupt Source 9. The PJ0 pin can serve as External Interrupt Sources.
Table 13-28 on page 92 and Table 13-29 on page 92 relates the alternate functions of Port J to the overriding sig-
nals shown in Figure 13-5 on page 73.



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