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EMC2113 датащи(PDF) 47 Page - Microchip Technology |
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EMC2113 датащи(HTML) 47 Page - Microchip Technology |
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47 / 88 page ![]() RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown Datasheet 2013 Microchip Technology Inc. DS20005251A-page 47 These registers store the ideality factors that are applied to the external diodes. Beta Compensation and Resistance Error Correction automatically correct for most diode ideality errors, therefore it is not recommended that these settings be updated without consulting Microchip. For CPU substrate transistors that require the BJT transistor model, the ideality factor behaves slightly differently than for discrete diode-connected transistors. Refer to Table 7.11, "Substrate Diode Ideality Factor Look-Up Table (BJT Model)" when using a CPU substrate transistor. Only the lower three bits can be written. Writing to any other bit will be ignored. The Ideality Factor Registers are software locked. APPLICATION NOTE: When measuring a 65nm Intel CPUs, the Ideality Setting should be the default 12h. When measuring 45nm Intel CPUs, the Ideality Setting should be 15h. Table 7.10 Ideality Factor Look-Up Table SETTING FACTOR 10h 1.0053 11h 1.0066 12h 1.0080 13h 1.0093 14h 1.0106 15h 1.0119 16h 1.0133 17h 1.0146 Table 7.11 Substrate Diode Ideality Factor Look-Up Table (BJT Model) SETTING FACTOR 10h 0.9973 11h 0.9986 12h 1.0000 13h 1.0013 14h 1.0026 15h 1.0039 16h 1.0053 17h 1.0066 |
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