Datasheet

1155
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
44.12.35 LCD Write Protect Mode Register
Name: LCD_WPMR
Access: Read/Write
• WPEN: Write Protect Enable
0: Disables the Write Protect if WPKEY corresponds to0x4C4344 ("LCD" in ASCII).
1: Enables the Write Protect if WPKEY corresponds to0x4C4344 ("LCD" in ASCII).
Protects the registers:
• “LCD Control Register 1” on page 1129
• “LCD Control Register 2” on page 1130
• “LCD Timing Configuration Register 1” on page 1132
• “LCD Timing Configuration Register 2” on page 1133
• “LCD Frame Configuration Register” on page 1134
• “LCD FIFO Register” on page 1135
• “LCDMOD Toggle Rate Value Register” on page 1136
• “Dithering Pattern DP1_2 Register” on page 1137
• “Dithering Pattern DP4_7 Register” on page 1138
• “Dithering Pattern DP3_5 Register” on page 1139
• “Dithering Pattern DP2_3 Register” on page 1140
• “Dithering Pattern DP5_7 Register” on page 1141
• “Dithering Pattern DP3_4 Register” on page 1142
• “Dithering Pattern DP4_5 Register” on page 1143
• “Dithering Pattern DP6_7 Register” on page 1144
• WPKEY: Write Protect Key
Should be written at value 0x4C4344 ("LCD" in ASCII). Writing any other value in this field aborts the write operation of the
WPEN bit. Always reads as 0.
31 30 29 28 27 26 25 24
WPKEY
23 22 21 20 19 18 17 16
WPKEY
15 14 13 12 11 10 9 8
WPKEY
76543210
———————WPEN