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IS25LP016D-RLLA3 Folha de dados(PDF) 55 Page - Integrated Silicon Solution, Inc |
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IS25LP016D-RLLA3 Folha de dados(HTML) 55 Page - Integrated Silicon Solution, Inc |
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55 / 114 page ![]() IS25LP016D IS25WP016D Integrated Silicon Solution, Inc.- www.issi.com 55 Rev. B10 03/09/2020 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 Dedic ated 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 QPI 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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