AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 212

• Manufacturer Part Number: AT89C5122
• Description: MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
• Manufacturer: ATMEL [ATMEL Corporation]

4202D–SCR–06/05
Microcontroller Reset ....................................................................... 172
Power Management .......................................................................... 180
Electrical Characteristics ................................................................. 186
Packaging Information ..................................................................... 201
Change Log ....................................................................................... 209
Table of Contents ............................................................................. 210
Registers........................................................................................................... 162
Interrupt Sources and Vectors .......................................................................... 171
Introduction ....................................................................................................... 172
Power On Reset (POR) .................................................................................... 173
Power Fail Detector (PFD)................................................................................ 173
Reset pin........................................................................................................... 175
Watchdog Timer ............................................................................................... 177
Idle Mode .......................................................................................................... 180
Power Down Mode ........................................................................................... 180
Reduced EMI Mode .......................................................................................... 181
USB Interface ................................................................................................... 182
Smart Card Interface ........................................................................................ 183
Keyboard Interface ........................................................................................... 184
Watchdog Timer during Power-down and Idle Mode........................................ 184
Registers........................................................................................................... 185
Absolute Maximum Ratings ..............................................................................186
DC Parameters .................................................................................................186
LED’s ................................................................................................................188
Smart Card Interface ........................................................................................ 189
USB Interface ................................................................................................... 192
AC Parameters ................................................................................................. 193
Float Waveforms............................................................................................... 199
Ordering Information......................................................................................... 201
Mechanical Dimensions.................................................................................... 203
Changes from 4202A to 4202B ........................................................................209
Changes from 4202B to 4202C ........................................................................209
Changes from 4202C to 4202D ........................................................................209
AT8xC5122/23
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