ATMEGA64A-MNR Atmel, ATMEGA64A-MNR Datasheet - Page 88

• Manufacturer Part Number: ATMEGA64A-MNR
• Description: IC MCU AVR 64K FLASH 8QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64A-MNR

• 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: *
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: SPI, UART, I2C
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 53
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 85 C
• Processor To Be Evaluated: ATMEGA64A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

13.4
13.4.1
8160C–AVR–07/09
Register Description
PORTA – Port A Data Register
• WR – Port G, Bit 0
WR is the external data memory write control strobe.
Table 13-22
shown in
Table 13-22. Overriding Signals for Alternate Functions in PG4:PG1
Table 13-23. Overriding Signals for Alternate Functions in PG0
Bit
0x1B (0x3B)
Read/Write
Initial Value
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Figure 13-5 on page
and
PORTA7
R/W
7
0
Table 13-23
PG4/TOSC1
AS0
0
AS0
0
0
0
AS0
0
–
T/C0 OSC INPUT
PORTA6
R/W
0
6
relates the alternate functions of Port G to the overriding signals
73.
PORTA5
R/W
5
0
PORTA4
R/W
PG3/TOSC2
AS0
0
AS0
0
0
0
AS0
0
–
T/C0 OSC OUTPUT
4
0
PORTA3
R/W
3
0
PG0/WR
SRE
0
SRE
1
SRE
WR
0
0
–
–
PORTA2
R/W
2
0
PORTA1
PG2/ALE
SRE
0
SRE
1
SRE
ALE
0
0
–
–
R/W
1
0
ATmega64A
PORTA0
R/W
0
0
PG1/RD
SRE
0
SRE
1
SRE
RD
0
0
–
–
PORTA
88