SH7760 Datasheet, PDF (1122/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

Table 30.5 Available Power-Supply Control-Sequence Periods at Typical Frame Rates
ONX, OFFX Register
Value
H'F
H'0
H'1
H'2
H'3
H'4
H'5
H'6
H'7
H'8
H'9
H'A
H'B
H'C
H'D
H'E
120 Hz
(−1+1)/120 = 0.00 (ms)
(0+1)/120 = 8.33 (ms)
(1+1)/120 = 16.67 (ms)
(2+1)/120 = 25.00 (ms)
(3+1)/120 = 33.33 (ms)
(4+1)/120 = 41.67 (ms)
(5+1)/120 = 50.00 (ms)
(6+1)/120 = 58.33 (ms)
(7+1)/120 = 66.67 (ms)
(8+1)/120 = 75.00 (ms)
(9+1)/120 = 83.33 (ms)
(10+1)/120 = 91.67 (ms)
(11+1)/120 = 100.00 (ms)
(12+1)/120 = 108.33 (ms)
(13+1)/120 = 116.67 (ms)
(14+1)/120 = 125.00 (ms)
Frame Rate
60 Hz
(−1+1)/60 = 0.00 (ms)
(0+1)/60 = 16.67 (ms)
(1+1)/60 = 33.33 (ms)
(2+1)/60 = 50.00 (ms)
(3+1)/60 = 66.67 (ms)
(4+1)/60 = 83.33 (ms)
(5+1)/60 = 100.00 (ms)
(6+1)/60 = 116.67 (ms)
(7+1)/60 = 133.33 (ms)
(8+1)/60 = 150.00 (ms)
(9+1)/60 = 166.67 (ms)
(10+1)/60 = 183.33 (ms)
(11+1)/60 = 200.00 (ms)
(12+1)/60 = 216.67 (ms)
(13+1)/60 = 233.33 (ms)
(14+1)/60 = 250.00 (ms)
Each of the ONA, ONB, ONC, OFFD, OFFE, and OFFF registers can be used to set the power-
supply control-sequence periods, in units of frames, from 0 to 15. The register setting is one less
than the value for that register, so the settings for H'0 through H'E correspond to 1 through 15
frames, with H'F set as 0 frames.
Actual sequence periods depend on the register values and the frame frequency of the display. The
following table gives power-supply control-sequence periods for display frame frequencies used
by typical LCD modules.
• When ONB is set to H’6 and display's frame frequency is 120 Hz
The display's frame frequency is 120 Hz. 1 frame period is thus 8.33 (ms) = 1/120 (sec).
The power-supply input sequence period is 7 frames because ONB setting is subtracted by 1.
As a result, the sequence period is 58.33 (ms) = 8.33 (ms) × 7.
Rev. 1.0, 02/03, page 1072 of 1294