AT89LP4052 datasheet(88/90 Pages) ATMEL

88 / 90 page

3547F–MICRO–6/06

AT89LP2052/LP4052 [Preliminary]

Table of Contents (Continued)

Power Saving Modes ............................................................................. 11

12.1Idle Mode ...............................................................................................................12

12.2Power-down Mode ................................................................................................12

Interrupts ................................................................................................ 13

13.1Interrupt Response Time .......................................................................................14

I/O Ports .................................................................................................. 17

14.1Quasi-bidirectional Output .....................................................................................17

14.2Input-only Mode .....................................................................................................18

14.3Open-drain Output .................................................................................................19

14.4Push-pull Output ....................................................................................................19

14.5Port 1 Analog Functions ........................................................................................19

14.6Port Read-Modify-Write .........................................................................................20

14.7Port Alternate Functions ........................................................................................20

Enhanced Timer/Counters .................................................................... 21

15.1Mode 0 ..................................................................................................................21

15.2Mode 1 ..................................................................................................................22

15.3Mode 2 ..................................................................................................................23

15.4Mode 3 ..................................................................................................................23

15.5Pulse Width Modulation .........................................................................................26

15.6Timer/Counter Pin Configuration ...........................................................................27

External Interrupts ................................................................................. 27

Serial Interface ....................................................................................... 28

17.1Multiprocessor Communications ...........................................................................28

17.2Baud Rates ............................................................................................................30

17.3More About Mode 0 ...............................................................................................31

17.4More About Mode 1 ...............................................................................................33

17.5More About Modes 2 and 3 ...................................................................................35

17.6Framing Error Detection ........................................................................................38

17.7Automatic Address Recognition ............................................................................38

AT89LP4052 Datasheet(PDF) 88 Page - ATMEL Corporation