ATmega644P Automotive Atmel Corporation, ATmega644P Automotive Datasheet - Page 65
ATmega644P Automotive
Manufacturer Part Number
ATmega644P Automotive
Description
Manufacturer
Atmel Corporation
Specifications of ATmega644P Automotive
Flash (kbytes)
64 Kbytes
Pin Count
44
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Spi
3
Twi (i2c)
1
Uart
2
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
Yes
Temp. Range (deg C)
-40 to 125
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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7701E–AVR–02/11
• Port A, Bit 1 – ADC1/AIN0/PCINT1
ADC1: Analog to Digital Converter, Channel 1
AIN0: Analog Comparator Positive Input. Configure the port pin as input with the internal
pull-up switched off to avoid the digital port function from interfering with the function of the
Analog Comparator.
PCINT1: Pin Change Interrupt source 1. The PA1 pin can serve as an external interrupt
source for pin change interrupt 0.
• Port A, Bit 2 – ADC2/AIN1/PCINT2
ADC2: Analog to Digital Converter, Channel 2
AIN1: Analog Comparator Negative Input. Configure the port pin as input with the internal
pull-up switched off to avoid the digital port function from interfering with the function of the
Analog Comparator.
PCINT2: Pin Change Interrupt source 2. The PA2 pin can serve as an external interrupt
source for pin change interrupt 0.
• Port A, Bit 3 – ADC3/T0/PCINT3
ADC3: Analog to digital converter, channel 3.
T0: Timer/counter 0 counter source.
PCINT3: Pin change interrupt source 3. The PA3 pin can serve as an external interrupt source
for pin change interrupt 0.
• Port A, Bit 4 – ADC4/USCK/SCL/T1/PCINT4
ADC4: Analog to Digital Converter, Channel 4
USCK: Three-wire mode Universal Serial Interface Clock.
SCL: Two-wire mode Serial Clock for USI Two-wire mode.
T1: Timer/Counter1 counter source.
PCINT4: Pin Change Interrupt source 4. The PA4 pin can serve as an external interrupt
source for pin change interrupt 0.
• Port A, Bit 5 – ADC5/DO/OC1B/PCINT5
ADC5: Analog to digital converter, channel 5.
DO: Data output in USI three-wire mode. Data output (DO) overrides PORTA5 value, and it is
driven to the port when the data direction bit DDA5 is set (one). However the PORTA5 bit still
controls the pull-up, enabling pull-up if direction is input and PORTA5 is set (one).
OC1B: Output compare match output: The PA5 pin can serve as an external output for the
Timer/Counter1 compare match B. The PA5 pin has to be configured as an output (DDA5 set
(one)) to serve this function. The OC1B pin is also the output pin for the PWM mode timer
function.
PCINT5: Pin change interrupt source 5. The PA5 pin can serve as an external interrupt source
for pin change interrupt 0.
Atmel ATtiny24/44/84 [Preliminary]
.
.
.
65
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