ATmega645A Atmel Corporation, ATmega645A Datasheet - Page 2
ATmega645A
Manufacturer Part Number
ATmega645A
Description
Manufacturer
Atmel Corporation
Specifications of ATmega645A
Flash (kbytes)
64 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
54
Ext Interrupts
17
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
4
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega645A-AUR
Manufacturer:
HONEYWELL
Quantity:
101
Company:
Part Number:
ATmega645A-MUR
Manufacturer:
TI
Quantity:
6 700
1. Pin Configurations
1.1
Figure 1-1.
Note:
8285DS–AVR–06/11
(USCK/SCL/PCINT4) PE4
(XCK/AIN0/PCINT2) PE2
Pinout - TQFP and QFN/MLF
The large center pad underneath the QFN/MLF packages is made of metal and internally connected to GND. It should be sol-
dered or glued to the board to ensure good mechanical stability. If the center pad is left unconnected, the package might loosen
from the board.
(DI/SDA/PCINT5) PE5
(OC0A/PCINT12) PB4
(OC1A/PCINT13) PB5
(OC1B/PCINT14) PB6
(MOSI/PCINT10) PB2
(MISO/PCINT11) PB3
(CLKO/PCINT7) PE7
(AIN1/PCINT3) PE3
(RXD/PCINT0) PE0
(TXD/PCINT1) PE1
(SCK/PCINT9) PB1
(DO/PCINT6) PE6
(SS/PCINT8) PB0
64A (TQFP)and 64M1 (QFN/MLF) Pinout
ATmega165A/ATmega165PA/ATmega325A/ATmega325PA/ATmega645A/ATmega645P
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P
DNC
10
11
14
15
16
12
13
1
2
3
4
5
6
7
8
9
INDEX CORNER
39
38
35
34
33
48
47
46
45
44
43
42
41
40
37
36
PA3
PA4
PA5
PA6
PA7
PG2
PC7
PC5
PC4
PC3
PC2
PC1
PC0
PC6
PG1
PG0
2