Numonyx RC28F256K18C120 (Write-Buffer Program) BGA(64) Device

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Last Updated: 05/18/2023

IMPORTANT: This algorithm uses Write-Buffer method to program the device.256Mbit (16M x 16) Intel StrataFlash(R) Memory.Default buffer value’ must be set to FFh before loading the programming data pattern.Device contains 17 128-bit Protection Registers PR0 through PR16 located at address range[2000000h-200010Fh] in the buffer. Example: PR0[0x81-0x88] is located at [2000000h-200000Fh]PR1[0x8A-0x91] at [2000010h-200001Fh] and so on.PR0[63:0] are permanently programmed by Intel with a unique number for each flash device.PR0[127:64] and PR1 through PR16 are one-time programmable (OTP) and available for user to program.If one or more OTP registers are programmed the range must be set to exclude the registers orErase/Program will fail.Once programmed the user-programmable register can be locked to prevent further programming usingDevice/Configure menu. Once the protection register is locked the entire user segment is lockedand no more user bits may be programmed. ‘