PIC18F6390 Datasheet, PDF (260/412 Pages) Microchip Technology – 64/80-Pin Flash Microcontrollers with LCD Driver and nanoWatt Technology

PIC18F6390/6490/8390/8490
22.1 LCD Registers
The LCD driver module has 32 registers:
• LCD Control Register (LCDCON)
• LCD Phase Register (LCDPS)
• Six LCD Segment Enable Registers
(LCDSE5:LCDSE0)
• 24 LCD Data Registers
(LCDDATA23:LCDDATA0)
The LCDCON register, shown in Register 22-1,
controls the overall operation of the module. Once the
module is configured, the LCDEN (LCDCON<7>) bit is
used to enable or disable the LCD module. The LCD
panel can also operate during Sleep by clearing the
SLPEN (LCDCON<6>) bit.
The LCDPS register, shown in Register 22-2,
configures the LCD clock source prescaler and the type
of waveform, Type-A or Type-B. Details on these
features are provided in Section 22.2 “LCD Clock
Source Selection” , Section 22.3 “LCD Bias Types”
and Section 22.8 “LCD Waveform Generation”.
REGISTER 22-1:
LCDCON: LCD CONTROL REGISTER
R/W-0 R/W-0 R/C-0
U-0
LCDEN SLPEN WERR
—
bit 7
R/W-0
CS1
R/W-0
CS0
R/W-0
LMUX1
R/W-0
LMUX0
bit 0
bit 7
bit 6
bit 5
bit 4
bit 3-2
bit 1-0
LCDEN: LCD Driver Enable bit
1 = LCD driver module is enabled
0 = LCD driver module is disabled
SLPEN: LCD Driver Enable in Sleep mode bit
1 = LCD driver module is disabled in Sleep mode
0 = LCD driver module is enabled in Sleep mode
WERR: LCD Write Failed Error bit
1 = LCDDATAx register written while LCDPS<WA> = 0 (must be cleared in software)
0 = No LCD write error
Unimplemented: Read as ‘0’
CS1:CS0: Clock Source Select bits
00 = (FOSC/4)/8192
01 = T13CKI (Timer1)/32
1x = INTRC (31.25 kHz)/32
LMUX1:LMUX0: Commons Select bits
LMUX1:LMUX0
00
01
10
11
Multiplex
Static (COM0)
1/2 (COM1:COM0)
1/3 (COM2:COM0)
1/4 (COM3:COM0)
Maximum Maximum
Number of Number of
Pixels
Pixels
(PIC18F6X90) (PIC18F8X90)
32
48
64
96
96
144
128
192
Bias
Static
1/2 or 1/3
1/2 or 1/3
1/3
Legend:
R = Readable bit
C = Only clearable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
DS39629B-page 258
Preliminary
 2004 Microchip Technology Inc.