ATMEGA645A-AU Atmel, ATMEGA645A-AU Datasheet - Page 82
![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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13.3.4
82
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/645
Alternate Functions of Port F
Table 13-10. Overriding Signals for Alternate Functions in PE3:PE0
Note:
The Port F has an alternate function as analog input for the ADC as shown in
some Port F pins are configured as outputs, it is essential that these do not switch when a con-
version is in progress. This might corrupt the result of the conversion. If the JTAG interface is
enabled, the pull-up resistors on pins PF7(TDI), PF5(TMS) and PF4(TCK) will be activated even
if a reset occurs.
Table 13-11. Port F Pins Alternate Functions
• TDI, ADC7 – Port F, Bit 7
ADC7, Analog to Digital Converter, Channel 7
TDI, JTAG Test Data In: Serial input data to be shifted in to the Instruction Register or Data Reg-
ister (scan chains). When the JTAG interface is enabled, this pin can not be used as an I/O pin.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Port Pin
PF7
PF6
PF5
PF4
PF3
PF2
PF1
PF0
1. AIN0D and AIN1D is described in
PE3/AIN1/
PCINT3
0
0
0
0
0
0
–
(PCINT3 • PCIE0)
+ AIN1D
PCINT3 • PCIE0
PCINT3 INPUT
AIN1 INPUT
Alternate Function
ADC7/TDI (ADC input channel 7 or JTAG Test Data Input)
ADC6/TDO (ADC input channel 6 or JTAG Test Data Output)
ADC5/TMS (ADC input channel 5 or JTAG Test mode Select)
ADC4/TCK (ADC input channel 4 or JTAG Test ClocK)
ADC3 (ADC input channel 3)
ADC2 (ADC input channel 2)
ADC1 (ADC input channel 1)
ADC0 (ADC input channel 0)
(1)
PE2/XCK/AIN0/
PCINT2
0
0
0
0
XCK
–
(PCINT2 • PCIE0) +
AIN0D
PCINT2 • PCIE0
XCK/PCINT2 INPUT
AIN0 INPUT
XCK OUTPUT ENABLE
(1)
”DIDR1 – Digital Input Disable Register 1” on page
.
PE1/TXD/
PCINT1
TXENn
0
TXENn
1
TXENn
TXD
–
PCINT1 • PCIE0
1
PCINT1 INPUT
–
PE0/RXD/PCINT0
RXENn
PORTE0 • PUD
RXENn
0
0
0
–
PCINT0 • PCIE0
1
RXD/PCINT0 INPUT
–
Table
8285B–AVR–03/11
13-11. If
213.
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