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IS25LP032D-RGLA3 データシート(PDF) 61 Page - Integrated Silicon Solution, Inc |
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IS25LP032D-RGLA3 データシート(HTML) 61 Page - Integrated Silicon Solution, Inc |
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61 / 118 page ![]() IS25LP032D IS25WP032D Integrated Silicon Solution, Inc.- www.issi.com 61 Rev. A12 08/04/2020 8.19 WRITE FUNCTION REGISTER OPERATION (WRFR, 42h) The Write Function Register (WRFR) instruction allows the user to disable dedicated RESET# pin or ball on 16-pin SOIC or 24 ball TFBGA by setting Dedicated RESET# Disable bit to “1”. Also Information Row Lock bits (IRL3~IRL0) can be set to “1” individually by WRFR instruction in order to lock Information Row. Since Dedicated RESET# Disable bit and IRL bits are OTP, once they are set to “1”, they cannot be set back to “0” again Figure 8.32 Write Function Register Sequence In SPI Mode Instruction = 42h CE # SCK SI SO Data In 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Mode 3 Mode 0 7 3 2 1 0 6 5 4 High Impedence Figure 8.33 Write Function Register Sequence In QPI Mode 42h 0 1 Mode 3 Mode 0 2 3 7:4 3:0 CE# SCK IO[3:0] Data In |
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