ATmega48A Atmel Corporation, ATmega48A Datasheet - Page 563
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ATmega48A
Manufacturer Part Number
ATmega48A
Description
Manufacturer
Atmel Corporation
Specifications of ATmega48A
Flash (kbytes)
4 Kbytes
Pin Count
32
Max. Operating Frequency
20 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
Yes
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 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
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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8271D–AVR–05/11
22 2-wire Serial Interface .......................................................................... 216
23 Analog Comparator ............................................................................. 248
24 Analog-to-Digital Converter ................................................................ 252
25 debugWIRE On-chip Debug System .................................................. 269
21.5Frame Formats ....................................................................................................208
21.6Data Transfer ......................................................................................................210
21.7AVR USART MSPIM vs. AVR SPI ......................................................................212
21.8Register Description ............................................................................................213
22.1Features ..............................................................................................................216
22.22-wire Serial Interface Bus Definition ..................................................................216
22.3Data Transfer and Frame Format ........................................................................218
22.4Multi-master Bus Systems, Arbitration and Synchronization ...............................220
22.5Overview of the TWI Module ...............................................................................223
22.6Using the TWI ......................................................................................................225
22.7Transmission Modes ...........................................................................................229
22.8Multi-master Systems and Arbitration ..................................................................242
22.9Register Description ............................................................................................243
23.1Overview .............................................................................................................248
23.2Analog Comparator Multiplexed Input .................................................................248
23.3Register Description ............................................................................................249
24.1Features ..............................................................................................................252
24.2Overview .............................................................................................................252
24.3Starting a Conversion ..........................................................................................254
24.4Prescaling and Conversion Timing ......................................................................255
24.5Changing Channel or Reference Selection .........................................................257
24.6ADC Noise Canceler ...........................................................................................258
24.7ADC Conversion Result ......................................................................................263
24.8Temperature Measurement .................................................................................263
24.9Register Description ............................................................................................264
25.1Features ..............................................................................................................269
25.2Overview .............................................................................................................269
25.3Physical Interface ................................................................................................269
25.4Software Break Points .........................................................................................270
25.5Limitations of debugWIRE ...................................................................................270
25.6Register Description ............................................................................................270
ATmega48A/PA/88A/PA/168A/PA/328/P
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