Manual

iii
AT89C5131
4136A–USB–03/03
Introduction....................................................................................................... 113
Description........................................................................................................ 114
Configuration .................................................................................................... 117
Read/Write Data FIFO ...................................................................................... 119
Bulk/Interrupt Transactions............................................................................... 120
Control Transactions......................................................................................... 124
Isochronous Transactions..................................................................................125
Miscellaneous....................................................................................................127
Suspend/Resume Management ........................................................................128
Detach Simulation..............................................................................................130
USB Interrupt System....................................................................................... 130
USB Registers ...................................................................................................133
Power Management .......................................................................... 145
Idle Mode.......................................................................................................... 145
Power-down Mode............................................................................................ 145
Registers........................................................................................................... 147
Hardware Watchdog Timer .............................................................. 148
Using the WDT ................................................................................................. 148
WDT During Power-down and Idle ................................................................... 149
ONCE Mode (ON Chip Emulation) ................................................... 150
Reduced EMI Mode ........................................................................... 151
Electrical Characteristics ................................................................. 152
Absolute Maximum Ratings ............................................................................. 152
DC Parameters for Standard Voltage............................................................... 152
DC Parameters for Low Voltage....................................................................... 153
USB DC Parameters......................................................................................... 156
AC Parameters ................................................................................................. 157
USB AC Parameters..........................................................................................166
Ordering Information ........................................................................ 167
Packaging Information..................................................................... 168
64-lead VQFP................................................................................................... 168
52-lead PLCC ................................................................................................... 169
48-lead MLF...................................................................................................... 170
28-lead SO........................................................................................................ 171
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