ATmega328P Automotive Atmel Corporation, ATmega328P Automotive Datasheet - Page 61
ATmega328P Automotive
Manufacturer Part Number
ATmega328P Automotive
Description
Manufacturer
Atmel Corporation
Specifications of ATmega328P Automotive
Flash (kbytes)
32 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
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
Yes
Crypto Engine
No
Sram (kbytes)
2
Eeprom (bytes)
1024
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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12.2.6
12.3
7701E–AVR–02/11
Alternate Port Functions
Unconnected Pins
If a logic high level (logical one) is present on an asynchronous external interrupt pin config-
ured as "interrupt on rising edge, falling edge, or any logic change on pin" while the external
interrupt is not enabled, the corresponding external interrupt flag will be set when resuming
from the above mentioned sleep mode, as the clamping in these sleep mode produces the
requested logic change.
If some pins are unused, it is recommended to ensure that these pins have a defined level.
Even though most of the digital inputs are disabled in the deep sleep modes as described
above, floating inputs should be avoided to reduce current consumption in all other modes
where the digital inputs are enabled (Reset, Active mode and Idle mode).
The simplest method to ensure a defined level of an unused pin is to enable the internal
pull-up. In this case, the pull-up will be disabled during reset. If low power consumption during
reset is important, it is recommended to use an external pull-up or pull-down. Connecting
unused pins directly to VCC or GND is not recommended, since this may cause excessive
currents if the pin is accidentally configured as an output.
Most port pins have alternate functions in addition to being general digital I/Os.
page 62
be overridden by alternate functions. The overriding signals may not be present in all port pins,
but the figure serves as a generic description applicable to all port pins in the Atmel
microcontroller family.
shows how the port pin control signals from the simplified
Atmel ATtiny24/44/84 [Preliminary]
Figure 12-2 on page 57
Figure 12-5 on
®
AVR
can
61
®
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