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31994A —1 August 2004
Table 14. Guidelines for Platform Thermal Protection of the Processor
Symbol
T
Thermal diode shutdown temperature for processor protection
SHUTDOWN
T
Maximum allowed time from T
SD_DELAY
Notes:
1. The thermal diode is not 100% tested, it is specified by design and limited characterization.
2. The thermal diode is capable of responding to thermal events of 40°C/s or faster.
3. The AMD Sempron™ processor model 10 provides a thermal diode for measuring die temperature of the processor. The
processor relies on thermal circuitry on the motherboard to turn off the regulated core voltage to the processor in response to a
thermal shutdown event. Refer to AMD Athlon™ Processor-Based Motherboard Design Guide, order# 24363, for thermal
protection circuitry designs.
7.13
APIC Pins AC and DC Characteristics
Table 15. APIC Pin AC and DC Characteristics
Symbol Parameter Description
V
Input High Voltage
IH
V
Input Low Voltage
IL
V
Output High Voltage
OH
V
Output Low Voltage
OL
I
Tristate Leakage Pullup
LEAK_P
Tristate Leakage
I
LEAK_N
Pulldown
I
Output Low Current
OL
Notes:
1. Characterized across DC supply voltage range.
2. The 2.625-V value is equal to 2.5 V plus a maximum of five percent.
3. Refer to "VCC_2.5V Generation Circuit" found in the section, "Motherboard Required Circuits," of the AMD Athlon™ Processor-
Based Motherboard Design Guide, order# 24363.
4. Edge rates indicate the range for characterizing the inputs.
Chapter 7
AMD Sempron™ Processor Model 10 with 256K L2 Cache Data Sheet
Table 14 shows the T
for circuitry in motherboard design necessary for thermal
protection of the processor.
Parameter Description
detection to processor shutdown
SHUTDOWN
Table 15 shows the AMD Sempron processor model 10 AC and
DC characteristics of the APIC pins.
Condition
V
< V
CC_CORE
CC_CORE_MAX
V
< V
CC_CORE
CC_CORE_MAX
V
= VSS (Ground)
IN
V
= 2.5 V
IN
V
Max
OL
Electrical Data
and T
SHUTDOWN
SD_DELAY
Min
Max
1.7
2.625
| V
– V
IH
CC_CORE
–300
700
2.625
| V
– V
OH
CC_CORE
–300
400
–1
1
9
specifications
Max
Units
Notes
°C
125
1, 2, 3
500
ms
1, 3
Units
Notes
V
1, 2
| ≤ 1.60 V
V
3
mV
1
V
2
| ≤ 1.60 V
V
3
mV
mA
mA
mA
37
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