AMD 10 manual Apic Pins AC and DC Characteristics, Apic Pin AC and DC Characteristics

31994A —1August 2004 AMD Sempron™ Processor Model 10 with 256K L2 Cache Data Sheet

Table 14 shows the TSHUTDOWN and TSD_DELAY specifications for circuitry in motherboard design necessary for thermal

protection of the processor.

Table 14. Guidelines for Platform Thermal Protection of the Processor

Symbol	Parameter Description	Max	Units	Notes
TSHUTDOWN	Thermal diode shutdown temperature for processor protection	125	°C	1, 2, 3
TSD_DELAY	Maximum allowed time from TSHUTDOWN detection to processor shutdown	500	ms	1, 3

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.

7.13APIC Pins AC and DC Characteristics

Table 15 shows the AMD Sempron processor model 10 AC and

DC characteristics of the APIC pins.

Table 15. APIC Pin AC and DC Characteristics

Symbol	Parameter Description	Condition	Min	Max	Units	Notes
VIH	Input High Voltage		1.7	2.625	V	1, 2
		VCC_CORE < VCC_CORE_MAX		VIH – VCC_CORE ≤ 1.60 V	V	3
VIL	Input Low Voltage		–300	700	mV	1
VOH	Output High Voltage			2.625	V	2
		VCC_CORE < VCC_CORE_MAX		VOH – VCC_CORE ≤ 1.60 V	V	3
VOL	Output Low Voltage		–300	400	mV
ILEAK_P	Tristate Leakage Pullup	VIN = VSS (Ground)	–1		mA
ILEAK_N	Tristate Leakage	VIN = 2.5 V		1	mA
	Pulldown
IOL	Output Low Current	VOL Max	9		mA

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 Electrical Data 37