Programming Model
LCD Controller 8-21
8.3.19 Refresh Mode Control Register
Only a single bit in this register is used to enable or disable LCD self-refresh mode. The remainin g bits are
reserved. The bit assignment for the register is shown in the following regis ter di splay . The se ttin gs for t he
bit in the register is listed in Table 8-19.

RMCR Refresh Mode Control Register 0x(FF)FFFA38

CCPEN
Bit 8 Contrast Control Enable—This bit is used to enable or dis-
able the contrast control function. 0 = Contrast co ntrol is off.
1 = Contrast control is on.
PWx
Bits 7–0 Pulse Width 7–0—This bit controls the pulse-width of the
built-in pulse-width modulator, which controls the contrast of
the LCD screen. See Chapter15, “Pulse-Width Modulator 1
and 2,” for more information.
See description.
BIT 7 654321BIT 0
REF_ON
TYPE rw
RESET 0 0000000
0x00
Table 8-19. Refresh Mode Control Register Description
Name Description Setting
REF_ON
Bit 7 Self-Refresh On—Setting this bit enables the self-refresh
mode of operation with the LCD panel. 0 = Disable self-refresh mode.
1 = Enter self-refresh mode.
Reserved
Bits 60Reserved These bits are reserved and should
be set to 0.
Note: On entering self-refresh mode, the LSCLK and LD[7:0] signals stay low. FRM and LP work as normal.
Table 8-18. PWM Contrast Control Register Description (Continued)
Name Description Setting