Toshiba – Toshiba TMP87CP24AF User Manual
Page 94
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TOSHIBA
TMP87CM24A/P24A
(2)
Frame frequency
Frame
frequency
(fp)
is
set
according
to
driving
method
and
base
frequency
as
shown
in
the
following Table 2-9. The base frequency is selected by SLF (bit 1 and 0 of LCDCR) according to the
frequency fc and fs of the basic clock to be used.
Table 2-9. Setting of LCD Frame Frequency
(a) At the single clock mode. At the dual clock mode (DV7CK
=
0).
SLF
Base frequency [Hz]
Frame frequency [Hz]
1/4 Duty
1/3 Duty
1/2 Duty
Static
00
fc
fc
4 . fc
4 . fc
fc
217
217
3 2^7
2
2^7
217
(fc =
8
MHz)
61
81
122
61
01
fc
fc
4 fc
4 fc
fc
2
i
6
216
3 2^^
2
2
^^
216
(fc = 4MHz)
61
81
122
61
10
fc
fc
4 fc
4 fc
fc
215
215
3 2^9
2
2^9
215
(fc = 4MHz)
122
162
244
122
11
fc
fc
4 fc
4 fc
fc
2i3
2i3
3 2^9
2
2^9
219
(fc= 1 MHz)
122
162
244
122
Note: fc: High-frequency clock [Hz]
(b) At the dual clock mode (DV7CK
=
1 or SYSCK
=
1)
SLF
Base frequency [Hz]
Frame frequency [Hz]
1/4 Duty
1/3 Duty
1/2 Duty
Static
00
fs
29
fs
29
4 . _fs_
3 29
4 . _fs_
2
29
fs
29
(fs = 32.768 kHz)
64
85
128
64
01
fs
28
fs
28
4 ^ fs
3
2^
4 , _fs_
2
29
fs
28
(fs = 32.768 kHz)
128
171
256
128
Note: fs: Low-frequency clock [Hz]
3
-
24-94
2002
-
10-03