ATMEGA64A-AU Atmel, ATMEGA64A-AU Datasheet - Page 268

• Manufacturer Part Number: ATMEGA64A-AU
• Description: MCU AVR 64K ISP FLASH 64-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64A-AU

• 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, 64-VQFP
• Package: 64TQFP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 53
• Interface Type: SPI/USART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 4
• Processor Series: ATMEGA64x
• Core: AVR8
• Data Ram Size: 4 KB
• Maximum Clock Frequency: 16 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• Cpu Family: ATmega
• Device Core Size: 8b
• Frequency (max): 16MHz
• Total Internal Ram Size: 4KB
• # I/os (max): 53
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: TQFP
• For Use With: 770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

25.5.6
8160C–AVR–07/09
Scanning the ADC
Figure 25-9. General Boundary-scan Cell used for Signals for Comparator and ADC
Table 25-4.
Figure 25-10
The Boundary-scan cell from
not be used for pure connectivity testing, since all analog inputs are shared with a digital port pin
as well.
Signal
Name
AC_IDLE
ACO
ACME
ACBG
shows a block diagram of the ADC with all relevant control and observe signals.
Direction as
Seen from the
Comparator
Input
Output
Input
Input
Boundary-scan Signals for the Analog Comparator
Previous
From
Cell
ShiftDR
0
1
ClockDR
Figure 25-6
Analog
Bandgap
Description
Turns off Analog
Comparator when
true
Comparator
Output
Uses output signal
from ADC mux
when true
Reference enable
D
is attached to each of these signals. The ADC need
UpdateDR
Q
Next
Cell
To
Recommended
Input when Not in
Use
1
Will become input
to µC code being
executed
0
0
D
G
Q
EXTEST
0
1
Output Values when
Recommended Inputs
are Used
Depends upon µC code
being executed
0
Depends upon µC code
being executed
Depends upon µC code
being executed
ATmega64A
268