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HC705V8GRS/D bảng dữ liệu(PDF) 24 Page - NXP Semiconductors |
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HC705V8GRS/D bảng dữ liệu(HTML) 24 Page - NXP Semiconductors |
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24 / 172 page ![]() SECTION 1: GENERAL DESCRIPTION Page 13 MC68HC705V8 Specification Rev. 2.1 1.5.17 VIGN The VIGN pin is used by the internal voltage regulator power moding circuitry to indicate that the regulator should power up. Its state is reflected in the IGNS bit of the MISC register. The input voltage levels on this pin are ratioed to the voltage on VBATT. See the electrical specifications. A smaller secondary regulator remains alive to power the VIGN pin logic when the primary voltage regulator is powered down, allowing the power moding logic to recognize and latch a rising edge on this pin and re-enable the primary regulator (power- up). See SECTION 7 POWER SUPPLY AND REGULATION for a more detailed description. The VIGN pin has no function when the option to disable the on-chip voltage regulator is selected and should be tied low. Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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