ATMEGA649A-AU Atmel, ATMEGA649A-AU Datasheet - Page 273

IC MCU AVR 64K FLASH 64TQFP

ATMEGA649A-AU

Manufacturer Part Number
ATMEGA649A-AU
Description
IC MCU AVR 64K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets

Specifications of ATMEGA649A-AU

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-TQFP
Processor Series
ATmega
Core
AVR
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
SPI, USART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
54
Number Of Timers
3
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA649A-AU
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATMEGA649A-AUR
Manufacturer:
Atmel
Quantity:
10 000
25.6
8284A–AVR–10/10
ATmega169A/169PA/329A/329PA/3290A/3290PA/649A/649P/6490A/6490P Boundary-scan
Order
Table 25-7 on page 279
TDO when the Boundary-scan chain is selected as data path. Bit 0 is the LSB; the first bit
scanned in, and the first bit scanned out. The scan order follows the pin-out order as far as pos-
sible. Therefore, the bits of Port A is scanned in the opposite bit order of the other ports.
Exceptions from the rules are the Scan chains for the analog circuits, which constitute the most
significant bits of the scan chain regardless of which physical pin they are connected to. In
ure 25-2 on page
PXn. Pull-up_enable corresponds to FF2. Bit 4, 5, 6 and 7 of Port F is not in the scan chain,
since these pins constitute the TAP pins when the JTAG is enabled...
Table 25-6.
Bit Number
197
196
195
194
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
ATmega169A/169PA Boundary-scan Order
Signal Name
AC_IDLE
ACO
ACME
AINBG
265, PXn. Data corresponds to FF0, PXn. Control corresponds to FF1, and
and
Table 25-8 on page 286
Module
Comparator
shows the Scan order between TDI and
Fig-
273

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