AT89LP4052 datasheet(91/93 Pages) ATMEL

91 / 93 page

iii

3547I–MICRO–6/08

AT89LP2052/LP4052

Table of Contents (Continued)

18. Serial Interface ....................................................................................... 30

18.1Multiprocessor Communications ...........................................................................30

18.2Baud Rates ............................................................................................................32

18.3More About Mode 0 ...............................................................................................33

18.4More About Mode 1 ...............................................................................................35

18.5More About Modes 2 and 3 ...................................................................................37

18.6Framing Error Detection ........................................................................................40

18.7Automatic Address Recognition ............................................................................40

19. Serial Peripheral Interface ..................................................................... 41

19.1Normal Mode .........................................................................................................43

19.2Enhanced Mode ....................................................................................................43

19.3Serial Clock Generator ..........................................................................................46

19.4SPI Pin Configuration ............................................................................................47

20. Analog Comparator ............................................................................... 48

20.1Comparator Interrupt with Debouncing .................................................................48

21. Programmable Watchdog Timer ........................................................... 50

22. Instruction Set Summary ...................................................................... 51

23. Programming the Flash Memory .......................................................... 56

23.1Programming Command Summary .......................................................................57

23.2Status Register ......................................................................................................58

23.3DATA Polling .........................................................................................................58

23.4Parallel Programming ............................................................................................58

23.5In-System Programming (ISP) ...............................................................................72

24. Electrical Characteristics ...................................................................... 77

24.1Absolute Maximum Ratings* .................................................................................77

24.2DC Characteristics ................................................................................................78

24.3Serial Peripheral Interface Timing ........................................................................79

24.4External Clock Drive ..............................................................................................81

24.5Serial Port Timing: Shift Register Mode ................................................................82

24.6Test Conditions .....................................................................................................82

AT89LP4052 Datasheet(PDF) 91 Page - ATMEL Corporation