ATmega48P Atmel Corporation, ATmega48P Datasheet - Page 418
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ATmega48P
Manufacturer Part Number
ATmega48P
Description
Manufacturer
Atmel Corporation
Specifications of ATmega48P
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
Yes
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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Company
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Manufacturer
Quantity
Price
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Part Number:
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vi
ATmega48P/88P/168P
26 Self-Programming the Flash, ATmega48P ........................................ 267
27 Boot Loader Support – Read-While-Write Self-Programming,
28 Memory Programming ......................................................................... 291
29 Electrical Characteristics .................................................................... 309
30 Typical Characteristics ........................................................................ 322
ATmega88P and ATmega168P 275
26.1Overview .............................................................................................................267
26.2Addressing the Flash During Self-Programming .................................................268
26.3Register Description’ ...........................................................................................273
27.1Features ..............................................................................................................275
27.2Overview .............................................................................................................275
27.3Application and Boot Loader Flash Sections .......................................................275
27.4Read-While-Write and No Read-While-Write Flash Sections ..............................276
27.5Boot Loader Lock Bits .........................................................................................278
27.6Entering the Boot Loader Program ......................................................................279
27.7Addressing the Flash During Self-Programming .................................................280
27.8Self-Programming the Flash ................................................................................280
27.9Register Description ............................................................................................289
28.1Program And Data Memory Lock Bits .................................................................291
28.2Fuse Bits .............................................................................................................292
28.3Signature Bytes ...................................................................................................294
28.4Calibration Byte ...................................................................................................294
28.5Page Size ............................................................................................................295
28.6Parallel Programming Parameters, Pin Mapping, and Commands .....................295
28.7Parallel Programming ..........................................................................................297
28.8Serial Downloading .............................................................................................304
29.1Absolute Maximum Ratings* ...............................................................................309
29.2DC Characteristics ..............................................................................................309
29.3Speed Grades .....................................................................................................312
29.4Clock Characteristics ...........................................................................................313
29.5System and Reset Characteristics ......................................................................314
29.6SPI Timing Characteristics ..................................................................................315
29.72-wire Serial Interface Characteristics .................................................................317
29.8ADC Characteristics – Preliminary Data ..............................................................319
29.9Parallel Programming Characteristics .................................................................320
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