ATMEGA64A-AUR Atmel, ATMEGA64A-AUR Datasheet - Page 75
![IC MCU AVR 64K FLASH 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA64A-AUR
Manufacturer Part Number
ATMEGA64A-AUR
Description
IC MCU AVR 64K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets
1.ATMEGA64A-MUR.pdf
(21 pages)
2.ATMEGA64A-AU.pdf
(392 pages)
3.ATMEGA64A-AU.pdf
(3 pages)
Specifications of ATMEGA64A-AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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13.3.1
8160C–AVR–07/09
Alternate Functions of Port A
The Port A has an alternate function as the address low byte and data lines for the External
Memory Interface.
Table 13-3.
Table 13-4
shown in
Table 13-4.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Port Pin
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Figure 13-5 on page
and
A7 • ADA | D7 OUTPUT
Port A Pins Alternate Functions
Overriding Signals for Alternate Functions in PA7:PA4
~(WR | ADA
PORTA7 • PUD
Table 13-5
Alternate Function
AD7 (External memory interface address and data bit 7)
AD6 (External memory interface address and data bit 6)
AD5 (External memory interface address and data bit 5)
AD4 (External memory interface address and data bit 4)
AD3 (External memory interface address and data bit 3)
AD2 (External memory interface address and data bit 2)
AD1 (External memory interface address and data bit 1)
AD0 (External memory interface address and data bit 0)
PA7/AD7
D7 INPUT
WR | ADA
• WR
SRE
SRE
SRE
0
0
–
(1)
) •
relates the alternate functions of Port A to the overriding signals
73.
PORTA6 • PUD
OUTPUT • WR
~(WR | ADA) •
A6 • ADA | D6
PA6/AD6
WR | ADA
D6 INPUT
SRE
SRE
SRE
0
0
–
PORTA5 • PUD
OUTPUT • WR
~(WR | ADA) •
A5 • ADA | D5
PA5/AD5
D5 INPUT
WR | ADA
SRE
SRE
SRE
0
0
–
ATmega64A
PORTA4 • PUD
OUTPUT • WR
~(WR | ADA) •
A4 • ADA | D4
PA4/AD4
WR | ADA
D4 INPUT
SRE
SRE
SRE
0
0
–
75
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