Operation; Lcddrv Operation - Panasonic MN101L Series User Manual

17.3 Operation

17.3.1

LCDDRV Operation

LCDDRV displays data with SEGn and COMn in static, 1/2-duty with 1/2 bias or 1/3 to 1/8 duty with 1/3 bias.
When LCDDRV is turned off, the voltage of V
At reset, all the common and segment pins are in high-impedance.
.. ..
LCDDRV can't be used when the LSI is in STOP mode.
Before transiting to STOP mode, the following procedures must be executed.
..
(1) Set the LCDMD2.LCUPEN to "1" and deactivate LCDDRV.
(2) When BSTVOL is activated, set LCDMD0.LCUPEN to "0".
(After deactivating BSTVOL, the voltage level of VLC1 is V
(3) When REFVOL is activated, set LCDMD1.LCVREN to "0".
..
After LSI reset, VLC1 is in high-impedance until the LDCDMD0.LCUPEN is set to "1".
When BSTVOL is used t output voltage from VLC1 to drive LCD display, LCDMD0.LCUPEN
should be set to"1" after releasing LSI reset. (Recommended.)
..
..
is output from COMn and SEGn.
LC1
.)
DD30
Operation
Chapter 17
LCD
XVII - 17