PXA255 Processor — Electrical, Mechanical, and Thermal Specification
Contents
1.0 About This Document............................................................................................7
2.0 Functional Overview ..............................................................................................7
3.0 Package Information..............................................................................................8
3.1
Package Introduction.....................................................................................8
3.1.1 Functional Signal Definitions ............................................................8
3.1.1.1 PXA255 Processor Signal Pin Descriptions .....................8
Package Power Ratings ..............................................................................22
3.2
4.0 Electrical Specifications......................................................................................22
4.1
4.2
4.3
4.4
4.5
4.6
Absolute Maximum Ratings.........................................................................22
Power Consumption Specifications.............................................................23
Operating Conditions...................................................................................25
Targeted DC Specifications.........................................................................26
Targeted AC Specifications.........................................................................27
Oscillator Electrical Specifications...............................................................28
4.6.1 32.768-kHz Oscillator Specifications..............................................28
4.6.2 3.6864 MHz Oscillator Specifications.............................................29
Reset and Power AC Timing Specifications................................................30
4.7.1 Power-On Timing ...........................................................................30
4.7.2 Hardware Reset Timing..................................................................32
4.7.3 Watchdog Reset Timing.................................................................32
4.7.4 GPIO Reset Timing ........................................................................32
4.7.5 Sleep Mode Timing ........................................................................33
Memory Bus and PCMCIA AC Specifications .............................................35
Peripheral Module AC Specifications ..........................................................37
4.9.1 LCD Module AC Timing..................................................................37
4.9.2 SSP Module AC Timing..................................................................37
4.9.3 Boundary Scan Test Signal Timings ..............................................38
4.7
4.8
4.9
4.10 AC Test Conditions .....................................................................................39
Data Sheet
3