Register definition: 
Status Register 1: S7 - S0
  Bit        Name                               Settings:    
   7         Status Register Protect            0: Disabled (Default), 1: Enabled
   6         Sector Protect                     0: 64k Sectors (Default), 1: 4k Sectors
   5         Tob/Bottom Protection              0: Top (Default), 1: Bottom
  4-2        Block Protection Bits[2:0]         See Protected Area table

Status Register 2: S15 - S8
  Bit        Name                               Settings:    
   14        Complement Protect                 0: Non-reversed (Default), 1: Reversed 
 13-11       Security Register Lock Bits 3-1    0: Unlocked (Default), 1: Locked (OTP)
   10        SFDP Security Register             1: Default Locked (OTP)
   9         Quad Enable                        1: Permanently Enabled

Status Register 3: S23 - S16
  Bit        Name                               Settings:
   23        Hold/Reset                         0: Hold (Default), 1: Reset
 22-21       Output Drive Strength 1-0          00: 25-ohm, 01: 33-ohm, 10: 50-ohm (Default), 11: 100-ohm