Cortex-A8 R2P2.pdf - ARM Information Center

AC CharacteristicsThe timing parameter tables in this chapter show setup and hold parameters of eachsignal as percentages of the relevant clock as shown in Table 17-1.Table 17-1 Format of timing parameter tablesSignal Clock Setup parameter Percent of clock period Hold parameterINPUT CLK T isinput 50% T ihinputOUTPUT PCLK T ovoutput 30% T ohoutputThe setup parameter values are based on the Slow-Slow (SS) corner under the followingconditions:• 125 °C• V DD = nominal operating voltage – 10%• target frequency = f max .The hold parameter values are based on the Fast-Fast (FF) corner under the followingconditions:• -40 C• V DD = nominal operating voltage + 10%• target frequency = f max .The nominal operating voltage for the process is defined to be V dd .NoteThe hold time requirements for the macrocell I/O are not specified in this document.The hold time is specific to process and implementation requirements and therefore, arecontrolled by the implementor.ARM DDI 0344E Copyright © 2006-2008 ARM Limited. All rights reserved. 17-3