ATmega48 Automotive Atmel Corporation, ATmega48 Automotive Datasheet - Page 64
ATmega48 Automotive
Manufacturer Part Number
ATmega48 Automotive
Description
Manufacturer
Atmel Corporation
Specifications of ATmega48 Automotive
Flash (kbytes)
4 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
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
No
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
256
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
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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12.3.1
64
Atmel ATtiny24/44/84 [Preliminary]
Alternate Functions of Port A
The Port A pins with alternate function are shown in
Table 12-3.
• Port A, Bit 0 – ADC0/AREF/PCINT0
ADC0: Analog to Digital Converter, Channel 0
AREF: External Analog Reference for ADC. Pullup and output driver are disabled on PA0
when the pin is used as an external reference or Internal Voltage Reference with external
capacitor at the AREF pin by setting (one) the bit REFS0 in the ADC Multiplexer Selection
Register (ADMUX).
PCINT0: Pin Change Interrupt source 0. The PA0 pin can serve as an external interrupt
source for pin change interrupt 0.
Port Pin
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
Port A Pins Alternate Functions
Alternate Function
ADC0: ADC input channel 0.
AREF: External analog reference.
PCINT0: Pin change interrupt 0 source 0.
ADC1:
AIN0:
PCINT1:Pin change interrupt 0 source 1.
ADC2:
AIN1:
PCINT2: Pin change interrupt 0 source 2.
T0:
PCINT3: Pin change interrupt 0 source 3.
ADC4:
USCK: USI Clock three wire mode.
SCL:
T1:
PCINT4: Pin change interrupt 0 source 4.
ADC5:
DO:
OC1B: Timer/Counter1 Compare Match B output.
PCINT5: Pin change interrupt 0 source 5.
ADC6:
DI:
SDA:
OC1A: Timer/Counter1 Compare Match A output.
PCINT6: Pin change interrupt 0 source 6.
ADC7:
OC0B: Timer/Counter0 Compare Match B output.
ICP1:
PCINT7: Pin change interrupt 0 source 7.
ADC3: ADC input channel 3.
ADC input channel 1.
Analog Comparator Positive Input.
ADC input channel 2.
Analog Comparator Negative Input.
Timer/Counter0 counter source.
ADC input channel 4.
USI Clock two wire mode.
Timer/Counter1 counter source.
ADC input channel 5.
USI Data Output three wire mode.
ADC input channel 6.
USI Data Input three wire mode.
USI Data Input two wire mode.
ADC input channel 7.
Timer/Counter1 Input Capture Pin.
.
Table 12-7 on page
68.
7701E–AVR–02/11
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