ATMEGA649P-MUR Atmel, ATMEGA649P-MUR Datasheet - Page 268

• Manufacturer Part Number: ATMEGA649P-MUR
• Description: AVR, 64KB FLASH, 2KB EE, 4KB SRA
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA649P-MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 54
• 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): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

25.5.4
8284A–AVR–10/10
Scanning the Analog Comparator
The relevant Comparator signals regarding Boundary-scan are shown in
Boundary-scan cell from
described in
The Comparator need not be used for pure connectivity testing, since all analog inputs are
shared with a digital port pin as well.
Figure 25-6. Analog Comparator
Figure 25-7. General Boundary-scan cell Used for Signals for Comparator and ADC
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
From Analog Ciruitry
From Digital Logic/
Table 25-3 on page
ADCEN
ACME
ADC MULTIPLEXER
REFERENCE
BANDGAP
OUTPUT
Figure 25-7
Previous
From
Cell
269.
ShiftDR
0
1
ACBG
ClockDR
is attached to each of these signals. The signals are
D
UpdateDR
Q
Next
Cell
To
ACD
D
G
Q
AC_IDLE
EXTEST
0
1
To Analog Circuitry/
To Digital Logic
ACO
Figure
25-6. The
268