AT89C5122D-RDRUM datasheet(207/208 Pages) ATMEL

207 / 208 page

207

4202F–SCR–07/2008

AT83R5122, AT8xC5122/23

Registers........................................................................................................... 160

Interrupt Sources and Vectors .......................................................................... 169

Microcontroller Reset ....................................................................... 170

Introduction ....................................................................................................... 170

Power On Reset (POR) .................................................................................... 171

Power Fail Detector (PFD)................................................................................ 171

Reset pin........................................................................................................... 173

Watchdog Timer ............................................................................................... 175

Power Management .......................................................................... 178

Idle Mode .......................................................................................................... 178

Power Down Mode ........................................................................................... 178

Reduced EMI Mode .......................................................................................... 179

USB Interface ................................................................................................... 180

Smart Card Interface ........................................................................................ 181

Keyboard Interface ........................................................................................... 182

Watchdog Timer during Power-down and Idle Mode........................................ 182

Registers........................................................................................................... 183

Electrical Characteristics ................................................................. 184

Absolute Maximum Ratings ..............................................................................184

DC Parameters .................................................................................................184

LED’s ................................................................................................................186

Smart Card Interface ........................................................................................ 187

USB Interface ................................................................................................... 190

AC Parameters ................................................................................................. 191

Float Waveforms............................................................................................... 197

Packaging Information ..................................................................... 199

Ordering Information......................................................................................... 199

Datasheet Revision History ............................................................. 204

Changes from 4202A to 4202B ........................................................................204

Changes from 4202B to 4202C ........................................................................204

Changes from 4202C to 4202D ........................................................................204

Changes from 4202D to 4202E ........................................................................204

Changes from 4202E to 4202F .........................................................................204

Table of Contents ............................................................................. 205

AT89C5122D-RDRUM датащи(PDF) 207 Page - ATMEL Corporation