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ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SSOP 28 8-Bit 32 MHz I/O number 25
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PIC16(L)F1934/6/7
DS41364E-page 340 2008-2011 Microchip Technology Inc.
REGISTER 27-7: LCDRL: LCD REFERENCE LADDER CONTROL REGISTERS
R/W-0/0 R/W-0/0 R/W-0/0 R/W-0/0 U-0 R/W-0/0 R/W-0/0 R/W-0/0
LRLAP<1:0> LRLBP<1:0>
— LRLAT<2:0>
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
u = Bit is unchanged x = Bit is unknown -n/n = Value at POR and BOR/Value at all other Resets
‘1’ = Bit is set ‘0’ = Bit is cleared
bit 7-6 LRLAP<1:0>: LCD Reference Ladder A Time Power Control bits
During Time interval A (Refer to Figure 27-4):
00 = Internal LCD Reference Ladder is powered down and unconnected
01 = Internal LCD Reference Ladder is powered in Low-Power mode
10 = Internal LCD Reference Ladder is powered in Medium-Power mode
11 = Internal LCD Reference Ladder is powered in High-Power mode
bit 5-4 LRLBP<1:0>: LCD Reference Ladder B Time Power Control bits
During Time interval B (Refer to Figure 27-4):
00 = Internal LCD Reference Ladder is powered down and unconnected
01 = Internal LCD Reference Ladder is powered in Low-Power mode
10 = Internal LCD Reference Ladder is powered in Medium-Power mode
11 = Internal LCD Reference Ladder is powered in High-Power mode
bit 3 Unimplemented: Read as ‘0’
bit 2-0 LRLAT<2:0>: LCD Reference Ladder A Time Interval Control bits
Sets the number of 32 kHz clocks that the A Time Interval Power mode is active
For type A waveforms (WFT =
0
):
000 = Internal LCD Reference Ladder is always in ‘B’ Power mode
001 = Internal LCD Reference Ladder is in ‘A’ Power mode for 1 clock and ‘B’ Power mode for 15 clocks
010 = Internal LCD Reference Ladder is in ‘A’ Power mode for 2 clocks and ‘B’ Power mode for 14 clocks
011 = Internal LCD Reference Ladder is in ‘A’ Power mode for 3 clocks and ‘B’ Power mode for 13 clocks
100 = Internal LCD Reference Ladder is in ‘A’ Power mode for 4 clocks and ‘B’ Power mode for 12 clocks
101 = Internal LCD Reference Ladder is in ‘A’ Power mode for 5 clocks and ‘B’ Power mode for 11 clocks
110 = Internal LCD Reference Ladder is in ‘A’ Power mode for 6 clocks and ‘B’ Power mode for 10 clocks
111 = Internal LCD Reference Ladder is in ‘A’ Power mode for 7 clocks and ‘B’ Power mode for 9 clocks
For type B waveforms (WFT =
1
):
000
=
Internal LCD Reference Ladder is always in ‘B’ Power mode.
001 = Internal LCD Reference Ladder is in ‘A’ Power mode for 1 clock and ‘B’ Power mode for 31 clocks
010 = Internal LCD Reference Ladder is in ‘A’ Power mode for 2 clocks and ‘B’ Power mode for 30 clocks
011 = Internal LCD Reference Ladder is in ‘A’ Power mode for 3 clocks and ‘B’ Power mode for 29 clocks
100 = Internal LCD Reference Ladder is in ‘A’ Power mode for 4 clocks and ‘B’ Power mode for 28 clocks
101 = Internal LCD Reference Ladder is in ‘A’ Power mode for 5 clocks and ‘B’ Power mode for 27 clocks
110 = Internal LCD Reference Ladder is in ‘A’ Power mode for 6 clocks and ‘B’ Power mode for 26 clocks
111 = Internal LCD Reference Ladder is in ‘A’ Power mode for 7 clocks and ‘B’ Power mode for 25 clocks