ATMEGA645A-AU Atmel, ATMEGA645A-AU Datasheet - Page 247
![IC MCU AVR 64K FLASH 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA645A-AU
Manufacturer Part Number
ATMEGA645A-AU
Description
IC MCU AVR 64K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA645A-AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, 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
Company:
Part Number:
ATMEGA645A-AUR
Manufacturer:
HONEYWELL
Quantity:
101
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8285B–AVR–03/11
ATmega165A/165PA/325A/325PA/3250A/3250PA/6
Figure 24-8. General Boundary-scan cell Used for Signals for Comparator and ADC
Table 24-2.
Signal
Name
AC_IDLE
ACO
ACME
ACBG
From Analog Ciruitry
From Digital Logic/
Direction as
Seen from the
Comparator
input
output
input
input
Boundary-scan Signals for the Analog Comparator
Previous
From
Cell
Description
Turns off Analog
Comparator when
true
Analog Comparator
Output
Uses output signal
from ADC mux when
true
Bandgap Reference
enable
ShiftDR
0
1
ClockDR
D
UpdateDR
Q
Next
Cell
To
D
G
Recommended
Input when Not
in Use
1
Will become input
to µC code being
executed
0
0
Q
EXTEST
0
1
To Analog Circuitry/
To Digital Logic
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
247
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