Intel EP80579

Intel
®
EP80579 Integrated Processor Product Line May 2010
Order Number: 320068-005US 198
Real Time Clock (RTC) Interface—Intel
®
EP80579 Integrated Processor Product Line
15.1.7 RTC Well Input Strap Requirements
All RTC-well inputs (RTEST#, INTRUDER#) recommend be either pulled up to VCCPRTC
or pulled down to ground while in the G3 state. RTEST#, when configured as shown in
Figure 132 meets this requirement. INTRUDER# recommend have a weak external
pull-up to VCCPRTC. This will prevent these nodes from floating in the G3 state and
correspondingly will prevent I
CC
RTC leakage that can cause excessive coin-cell drain. It
is recommended that the PWROK input signal also be configured with an external weak
pull-down.