CH80566EE025DW S LGPN Intel, CH80566EE025DW S LGPN Datasheet - Page 73

• Manufacturer Part Number: CH80566EE025DW S LGPN
• Description: MPU, ATOM PROCESSOR, Z530P, U-FCBGA8
• Manufacturer: Intel
• Series: ATOM - Z5xxr

Specifications of CH80566EE025DW S LGPN

• Core Size: 32bit
• Program Memory Size: 512KB
• Cpu Speed: 533MHz
• Digital Ic Case Style: FCBGA
• No. Of Pins: 437
• Supply Voltage Range: 0.8V To 1.1V
• Operating Temperature Range: 0°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Thermal Specifications and Design Considerations
Datasheet
The processor implements a bidirectional PROCHOT# capability to allow system
designs to protect various components from overheating situations. The PROCHOT#
signal is bidirectional in that it can either signal when the processor has reached its
maximum operating temperature or be driven from an external source to activate the
TCC. The ability to activate the TCC using PROCHOT# can provide a means for thermal
protection of system components.
Only a single PROCHOT# pin exists at a package level of the processor. When the
core's thermal sensor trips, the PROCHOT# signal is driven by the processor package.
If only TM1 is enabled, PROCHOT# will be asserted and only the core that is above
TCC temperature trip point will have its core clocks modulated. If TM2 is enabled and
the core is above TCC temperature trip point, it will enter the lowest programmed TM2
performance state. It is important to note that Intel recommends both TM1 and TM2
to be enabled.
When PROCHOT# is driven by an external agent, if only TM1 is enabled on the core,
then the processor core will have the clocks modulated. If TM2 is enabled, then the
processor core will enter the lowest programmed TM2 performance state. It should be
noted that Force TM1 on TM2, enabled using BIOS, does not have any effect on
external PROCHOT#. If PROCHOT# is driven by an external agent when TM1, TM2,
and Force TM1 on TM2 are all enabled, then the processor will still apply only TM2.
PROCHOT# may be used for thermal protection of voltage regulators (VR). System
designers can create a circuit to monitor the VR temperature and activate the TCC
when the temperature limit of the VR is reached. By asserting PROCHOT# (pulled-low)
and activating the TCC, the VR will cool down as a result of reduced processor power
consumption. Bidirectional PROCHOT# can allow VR thermal designs to target
maximum sustained current instead of maximum current. Systems should still provide
proper cooling for the VR and rely on bidirectional PROCHOT# only as a backup in
case of system cooling failure. The system thermal design should allow the power
delivery circuitry to operate within its temperature specification even while the
processor is operating at its TDP. With a properly designed and characterized thermal
solution, it is anticipated that bidirectional PROCHOT# would only be asserted for very
short periods of time when running the most power intensive applications. An under-
designed thermal solution that is not able to prevent excessive assertion of
PROCHOT# in the anticipated ambient environment may cause a noticeable
performance loss.
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