ATmega6490 Atmel Corporation, ATmega6490 Datasheet - Page 68
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ATmega6490
Manufacturer Part Number
ATmega6490
Description
Manufacturer
Atmel Corporation
Specifications of ATmega6490
Flash (kbytes)
64 Kbytes
Pin Count
100
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
69
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Segment Lcd
160
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
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13.3.2
68
ATmega329/3290/649/6490
Alternate Functions of Port B
Table 13-5.
The Port B pins with alternate functions are shown in
Table 13-6.
The alternate pin configuration is as follows:
• OC2A/PCINT15, Bit 7
OC2, Output Compare Match A output: The PB7 pin can serve as an external output for the
Timer/Counter2 Output Compare A. The pin has to be configured as an output (DDB7 set (one))
to serve this function. The OC2A pin is also the output pin for the PWM mode timer function.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Port Pin
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
Overriding Signals for Alternate Functions in PA3..PA0
Port B Pins Alternate Functions
PA3/COM3
LCDEN •
(LCDMUX)
0
LCDEN •
(LCDMUX)
0
0
0
–
LCDEN •
(LCDMUX)
0
–
COM3
Alternate Functions
OC2A/PCINT15 (Output Compare and PWM Output A for Timer/Counter2 or
Pin Change Interrupt15).
OC1B/PCINT14 (Output Compare and PWM Output B for Timer/Counter1 or
Pin Change Interrupt14).
OC1A/PCINT13 (Output Compare and PWM Output A for Timer/Counter1 or
Pin Change Interrupt13).
OC0A/PCINT12 (Output Compare and PWM Output A for Timer/Counter0 or
Pin Change Interrupt12).
MISO/PCINT11 (SPI Bus Master Input/Slave Output or Pin Change
Interrupt11).
MOSI/PCINT10 (SPI Bus Master Output/Slave Input or Pin Change
Interrupt10).
SCK/PCINT9 (SPI Bus Serial Clock or Pin Change Interrupt9).
SS/PCINT8 (SPI Slave Select input or Pin Change Interrupt8).
PA2/COM2
LCDEN •
(LCDMUX)
0
LCDEN •
(LCDMUX)
0
0
0
–
LCDEN •
(LCDMUX)
0
–
COM2
PA1/COM1
LCDEN •
(LCDMUX)
0
LCDEN •
(LCDMUX)
0
0
0
–
LCDEN •
(LCDMUX)
0
–
COM1
Table
13-6.
PA0/COM0
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
COM0
2552K–AVR–04/11
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