ATMEGA64-16MI View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
ATMEGA64-16MI
Atmel Corporation
ATMEGA64-16MI Datasheet PDF : 363 Pages
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• AIN1/OC3A – Port E, Bit 3
AIN1 – Analog Comparator Negative input. This pin is directly connected to the negative
input of the Analog Comparator.
OC3A, Output Compare Match A output: The PE3 pin can serve as an external output
for the Timer/Counter3 Output Compare A. The pin has to be configured as an output
(DDE3 set – one) to serve this function. The OC3A pin is also the output pin for the
PWM mode timer function.
• AIN0/XCK0 – Port E, Bit 2
AIN0 – Analog Comparator Positive input. This pin is directly connected to the positive
input of the Analog Comparator.
XCK0, USART0 External Clock. The Data Direction Register (DDE2) controls whether
the clock is output (DDE2 set) or input (DDE2 cleared). The XCK0 pin is active only
when the USART0 operates in synchronous mode.
• PDO/TXD0 – Port E, Bit 1
PDO, SPI Serial Programming Data output. During Serial Program Downloading, this
pin is used as data output line for the ATmega64.
TXD0, UART0 Transmit Pin.
• PDI/RXD0 – Port E, Bit 0
PDI, SPI Serial Programming Data input. During serial program downloading, this pin is
used as data input line for the ATmega64.
RXD0, USART0 Receive pin. Receive Data (Data Input pin for the USART0). When the
USART0 Receiver is enabled this pin is configured as an input regardless of the value of
DDRE0. When the USART0 forces this pin to be an input, a logical one in PORTE0 will
turn on the internal pull-up.
Table 40 and Table 41 relates the alternate functions of Port E to the overriding signals
shown in Figure 33 on page 69.
Table 40. Overriding Signals for Alternate Functions PE7..PE4
Signal
Name
PE7/INT7/IC3
PE6/INT6/T3
PE5/INT5/OC3C
PUOE 0
0
0
PUOV 0
0
0
DDOE 0
0
0
DDOV 0
0
0
PVOE 0
0
OC3C ENABLE
PVOV 0
0
OC3C
DIEOE INT7 ENABLE
INT6 ENABLE
INT5 ENABLE
DIEOV 1
1
1
DI
INT7 INPUT/IC3 INT7 INPUT/T3
INT5 INPUT
INPUT
INPUT
AIO
–
–
–
PE4/INT4/OC3B
0
0
0
0
OC3B ENABLE
OC3B
INT4 ENABLE
1
INT4 INPUT
–
80 ATmega64(L)
2490G–AVR–03/04
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