hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 475

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Table 13.3 Output Levels
Data
M
Static
1/2 duty
1/3 duty
1/4 duty
13.3.3
This LSI the LCD controller/driver can be operated even in the power-down modes. The
operating state of the LCD controller/driver in the power-down modes is summarized in table
13.4.
In subactive mode, watch mode, and subsleep mode, the system clock oscillator stops, and
therefore, unless φw, φw/2, or φw/4 has been selected by bits CKS3 to CKS0, the clock will not be
supplied and display will halt. Since there is a possibility that a direct current will be applied to
the LCD panel in this case, it is essential to ensure that φw, φw/2, or φw/4 is selected. In active
(medium-speed) mode, the system clock is switched, and therefore CKS3 to CKS0 must be
modified to ensure that the frame frequency does not change.
Operation in Power-Down Modes
Common output
Segment output
Common output
Segment output
Common output
Segment output
Common output
Segment output
0
0
V
V
V
V
V
V
V
V
1
1
2
1
3
2
3
2
, V
3
0
1
V
V
V
V
V
V
V
V
SS
SS
2
SS
2
3
2
3
, V
Rev. 7.00 Mar 10, 2005 page 433 of 652
3
Section 13 LCD Controller/Driver
1
0
V
V
V
V
V
V
V
V
1
SS
1
SS
1
SS
1
SS
M: LCD alternation signal
REJ09B0042-0700
1
1
V
V
V
V
V
V
V
V
SS
1
SS
1
SS
1
SS
1