ATmega325P datasheet(362/364 Pages) ATMEL

362 / 364 page

8023F–AVR–07/09

ATmega325P/3250P

24.9Register Description ............................................................................................269

Memory Programming ......................................................................... 271

25.1Program And Data Memory Lock Bits .................................................................271

25.2Fuse Bits .............................................................................................................272

25.3Signature Bytes ...................................................................................................274

25.4Calibration Byte ...................................................................................................274

25.5Parallel Programming Parameters, Pin Mapping, and Commands .....................274

25.6Parallel Programming ..........................................................................................276

25.7Serial Downloading .............................................................................................285

25.8Programming via the JTAG Interface ..................................................................291

Electrical Characteristics .................................................................... 304

26.1Absolute Maximum Ratings* ...............................................................................304

26.2DC Characteristics ..............................................................................................304

26.3Speed Grades .....................................................................................................306

26.4Clock Characterizations ......................................................................................307

26.5System and Reset Characterizations ..................................................................308

26.6Standard Power-on Reset ...................................................................................308

26.7Enhanced Power-on Reset .................................................................................308

26.8Brown-out Detection ............................................................................................309

26.9SPI Timing Characteristics ..................................................................................310

26.10ADC Characteristics – Preliminary Data ............................................................312

Typical Characteristics ....................................................................... 314

27.1Active Supply Current ..........................................................................................314

27.2Idle Supply Current ..............................................................................................316

27.3Supply Current of I/O modules ............................................................................318

27.4Power-down Supply Current ...............................................................................319

27.5Power-save Supply Current ................................................................................320

27.6Standby Supply Current ......................................................................................321

27.7Pin Pull-up ...........................................................................................................321

27.8Pin Driver Strength ..............................................................................................324

27.9Pin Threshold and Hysteresis .............................................................................330

27.10Internal Oscillator Speed ...................................................................................335

27.11Current Consumption of Peripheral Units ..........................................................337

27.12Current Consumption in Reset and Reset Pulswidth ........................................340

ATmega325P датащи(PDF) 362 Page - ATMEL Corporation