Datasheet

PIC16(L)F1934/6/7
DS41364E-page 356  2008-2011 Microchip Technology Inc.
FIGURE 27-19: WAVEFORMS AND INTERRUPT TIMING IN QUARTER-DUTY CYCLE DRIVE
(EXAMPLE – TYPE-B, NON-STATIC)
Frame
Boundary
Frame
Boundary
LCD
Interrupt
Occurs
Controller Accesses
Next Frame Data
TFINT
TFWR
TFWR =TFRAME/2*(LMUX<1:0> + 1) + TCY/2
T
FINT =(TFWR/2 – (2 TCY + 40 ns))  minimum = 1.5(TFRAME/4) – (2 TCY + 40 ns)
(T
FWR/2 – (1 TCY + 40 ns))  maximum = 1.5(TFRAME/4) – (1 TCY + 40 ns)
Frame
Boundary
V
3
V
2
V
1
V
0
V
3
V
2
V
1
V
0
V
3
V
2
V
1
V
0
V
3
V
2
V
1
V
0
COM0
COM1
COM2
COM3
2 Frames